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Tag: Ohio State University

  • How aircraft can fly through smoke-filled skies

    How aircraft can fly through smoke-filled skies

    Navigating smoke-filled skies may seem like a new challenge to those in the Eastern United States, but aerospace researchers have long been preparing aircraft to fly under just such conditions. Professor Jeffrey Bons of The Ohio State University is an expert in the field of particulate deposition, the study of dust/sand/salt/pollutant build up on aircraft engines. His laboratory is internationally renowned for maximizing the efficiency of gas turbine engines operating in particulate-filled atmospheric conditions, like those occurring downwind of wildfires. While not typical of the skies above most of the U.S., similar conditions are commonly encountered in flights over deserts, active volcanoes and highly polluted areas. Professor Bons can discuss advanced technology used in gas turbine jet engines to mitigate the risks of airborne particulate build up, including decreased performance and engine failure.

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  • Ohio State professor elected to National Academy of Sciences

    Ohio State professor elected to National Academy of Sciences

    Newswise — COLUMBUS, Ohio – An Ohio State University astronomy professor has been elected to the National Academy of Sciences, one of the highest honors a scientist can receive in the U.S. 

    David Weinberg, Distinguished University Professor and chair of astronomy, is among 120 new members and 23 international members from 13 countries who were inducted this year in recognition of distinguished and continuing achievement in original research inside their chosen field.

    “I have been lucky to have great students and great colleagues throughout my 28 years at Ohio State,” said Weinberg. “It’s just very gratifying to know that your colleagues really recognize and appreciate the work that you do.”

    Throughout his career, Weinberg’s work in cosmology has investigated the matter and energy contents of the universe, the formation of galaxies, and the origin of the chemical elements. He is also known for his theoretical work, using supercomputer simulations of dark matter and galaxy clustering, and for his leading roles in cosmological surveys, especially the Sloan Digital Sky Surveys.

    “Professor Weinberg’s election into the highly prestigious National Academy of Sciences is a testament of his career dedicated to research, scholarship and to deepening our understanding of the universe around us,” said Peter Mohler, interim executive vice president of research, innovation and knowledge at Ohio State. 

    Weinberg becomes the first astronomer from Ohio State to have been elected to the National Academy of Sciences. According to Weinberg, it was possible to flourish because Ohio State is an ideal space for the exchange of ideas. 

    “What has made Ohio State astronomy so great is that we recruit terrific people and create an environment where they can do better science here than they could anywhere else,” said Weinberg. “As I now become someone who can elect members in the future, I hope to nominate some other great people from public universities.”

    Weinberg received his B.S in physics at Yale University and his Ph.D. in astrophysics at Princeton University. His previous recognitions include the 2021 Dannie Heineman Prize awarded by the American Astronomical Society and the American Institute of Physics. 

    Weinberg joins 11 other Ohio State faculty who are members of the National Academy of Sciences. 

    A private, nonprofit society, the National Academy of Sciences was originally established by Abraham Lincoln during the Civil War to provide scientific advice to the government. Now an advisory body with more than 2,500 active members, its various committees and panels have helped direct a number of scientific and military projects, including future NASA missions and potential telescope proposals. 

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  • Behavior Patterns of People Who Achieve Clinically Significant Weight Loss

    Behavior Patterns of People Who Achieve Clinically Significant Weight Loss

    Newswise — COLUMBUS, Ohio – A new study analyzing data on over 20,000 U.S. adults links a healthier diet and increased exercise to weight loss that reduces heart disease risk – while associating skipping meals and taking prescription diet pills with minimal weight loss, weight maintenance or weight gain. 

    For many in the study sample, however, losing a “clinically significant” 5% of their body weight did not eliminate their risk factors for cardiovascular disease, results showed. In fact, the average composite score on eight risk factors for heart disease was the same across the entirety of the study population – regardless of reported weight changes, up or down.

    The study is the first to compare weight-loss strategies and results in the context of the American Heart Association’s “Life’s Essential 8,” a checklist promoting heart disease risk reduction through the pursuit of recommended metrics for body weight, blood pressure, cholesterol, blood sugar, smoking, physical activity, diet and sleep. The AHA first defined a construct of cardiovascular health with “Life’s Simple 7” metrics in 2010, and updated the recommendations to the “Life’s Essential 8” in June 2022. 

    The Ohio State University researchers found that overall, U.S. adults had an average score of 60 out of 100 on the eight measures – suggesting there is plenty of room for improvement even among those whose diet and exercise behaviors helped move the needle on some metrics. 

    “The Life’s Essential 8 is a valuable tool that provides the core components for cardiovascular health, many of which are modifiable through behavior change,” said senior study author Colleen Spees, associate professor of medical dietetics in the School of Health and Rehabilitation Sciences at Ohio State.  

    “Based on the findings in this study, we have a lot of work to do as a country,” she said. “Even though there were significant differences on several parameters between the groups, the fact remains that as a whole, adults in this country are not adopting the Life’s Essential 8 behaviors that are directly correlated with heart health.”

    The research was published recently in the Journal of the American Heart Association

    Data for the analysis came from 20,305 U.S. adults aged 19 or older (average age of 47) who participated in the National Health and Nutrition Examination Survey (NHANES) between 2007 and 2016. Participants reported their smoking status, physical activity, average hours of sleep per night, weight history and weight loss strategy, and what they had eaten in the previous 24 hours. Health exams and lab tests measured their body mass index, blood pressure, LDL (bad) cholesterol and blood glucose. 

    The Ohio State researchers used the data to determine individuals’ values for Life’s Essential 8 metrics and assessed their diet quality according to the Healthy Eating Index, which gauges adherence to U.S. Dietary Guidelines for Americans

    Within the sample, 17,465 individuals had lost less than 5% of their body weight, maintained their weight or gained weight in the past year. The other 2,840 reported intentional loss of at least 5% of their body weight in the same time frame.

    “Clinically significant weight loss results in improvements in some health indices,” Spees said. “People should feel hopeful in knowing that losing just 5% of their body weight is meaningful in terms of clinical improvements. This is not a huge weight loss. It’s achievable for most, and I would hope that incentives people instead of being paralyzed with a fear of failure.” 

    In this study, adults with clinically significant weight loss reported higher diet quality, particularly with better scores on intakes of protein, refined grains and added sugar, as well as more moderate and vigorous physical activity and lower LDL cholesterol than the group without clinically significant weight loss. On the other hand, the weight-loss group also had a higher average BMI and HbA1c blood sugar measure and fewer hours of sleep – all metrics that would bring down their composite Life’s Essential 8 score.

    A greater proportion of people who did not lose at least 5% of their weight reported skipping meals or using prescription diet pills as weight-loss strategies. Additional strategies reported by this group included low-carb and liquid diets, taking laxatives or vomiting, and smoking. 

    “We saw that people are still gravitating to non-evidence-based approaches for weight loss, which are not sustainable. What is sustainable is changing behaviors and eating patterns,” Spees said. 

    With federal data estimating that more than 85% of the adult U.S. population will be overweight or obese by 2030 (compared to the current rate of 73%), Spees said that to fend off related increases in heart disease and other health problems, a paradigm shift toward prevention is in order.

    “We absolutely need to be moving toward prevention of disease versus waiting until people are diagnosed with a disease. This becomes quite overwhelming, and individuals may feel it’s too late at that point,” she said. 

    One idea to consider, she said, would be prescriptions for regular visits with registered dietitians trained in behavior change, complete with insurance reimbursement – similar to physical therapy. 

    “We have fantastic research, we have incredible educators,” she said. “What we don’t have is policy that promotes optimal health across the lifespan, from pregnancy through older adulthood.”

    Co-authors of the study included first author Emily Hill (supported by a National Center for Advancing Clinical Sciences fellowship), Lauren Cubellis, Randell Wexler and Christopher Taylor.

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  • Over a dozen hurt in roof collapse near Ohio State University

    Over a dozen hurt in roof collapse near Ohio State University

    More than a dozen people were hurt Saturday night when a roof collapsed at an off-campus house near Ohio State University in Columbus, officials said, but none of the injuries were believed to be life-threatening.

    Columbus Division of Fire Battalion Chief Steve Martin told reporters that crews responded to the scene find that the roof of the home’s front porch had collapsed, but that “the home itself was intact.”

    “The few people that were trapped, I believe, were probably, unpinned, it was like their leg was caught under some of the structure, and some of the other students lifted that off the students,” Martin said. “So everybody was kind of out.”

    According to CBS affiliate WBNS-TV, the incident occurred at 7:40 p.m. local time at a home just a few blocks off the OSU campus.

    Fourteen students were taken to local hospitals with various injuries, Martin disclosed, but “nothing serious, nothing critical.”

    Officials were told that there may have been anywhere from 15 to 45 people on the roof at the time of the collapse, according to Martin.  

    “It appears that the roof was overloaded with students,” he said.

    In a statement provided to CBS News late Saturday night, a university spokesperson said that it was “monitoring this situation closely and assisting first responders in any way possible. Our thoughts are with those present and their friends and family.”


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  • Hundreds of Students, Faculty, and Administrators Speak Out Against Ohio’s Proposal to Reform Public Colleges

    Hundreds of Students, Faculty, and Administrators Speak Out Against Ohio’s Proposal to Reform Public Colleges

    Florida and Texas have drawn much of the national attention over lawmakers’ efforts to reform higher ed this year. But Ohio’s legislature hosted a dramatic, seven-hour committee hearing on Wednesday — in which hundreds of students, faculty, and administrators sought to articulate the consequences of lawmakers’ sweeping proposed changes to public colleges in the state.

    Introduced in the Ohio Senate last month, the 39-page SB 83 would ban mandatory diversity training, prohibit the use of diversity statements in hiring or admissions, and prevent higher-ed employees from striking. It could also have the effect of preventing institutions from funding diversity offices.

    SB 83 would also prevent institutions from accepting donations from individuals or institutions based in China, as well as require colleges to institute new post-tenure-review policies; use specific, state-mandated language in their mission statements; and post all course syllabi on their websites.

    The hearing, held by the state Senate’s Workforce and Higher Education Committee, drew over 100 professors and over 90 students, most of them undergraduates, and most of them testifying in opposition to the bill.

    A dozen college staff members and administrators voiced opposition, including the dean of Ohio State University’s College of Public Health. The Ohio School Psychologists Association argued that the legislation could cause all school-psychologist training programs in the state to lose their accreditation.

    Six people testified in support of the bill.

    Bobby McAlpine, undergraduate student-body president at Ohio State, said he commissioned a survey of almost 1,600 undergraduates, with 82 percent responding that they “do not believe that Ohio State faculty, staff, or administration seek to impose certain political beliefs on them.” Ohio State has about 47,000 undergraduates.

    According to McAlpine, 86 percent of student respondents said Ohio State’s DEI efforts were meaningful in some way. One respondent who answered that such efforts were not meaningful wrote: “Why should we have to learn about them anyway? They don’t even deserve to be here. Senate Bill 83 should be passed.”

    Such a statement shows that the legislation is having an impact on campus, McAlpine said. “We’re already seeing, in this huge survey size of people, that the language of this bill is clearly making students already speak out against people that look like me, against people that have marginalized identities,” he said.

    Potential Impacts

    At Wednesday’s hearing, Republican lawmakers spoke of the bill as a way to level the academic playing field for conservative students who, they said, are often scared to speak up in class or face retaliation for their opinions when they do.

    State Rep. Josh Williams, a Republican and proponent of the bill, said he had that experience while pursuing a law degree at the University of Toledo. During a class, he said, he expressed the opinion that the United States shouldn’t adopt an open-border policy. Later, Williams said, a law professor commented on one of Williams’s Facebook posts, saying that his views reminded him of the Nazi Party. Williams said he was also harassed by fellow students, both online and in class.

    On another occasion while attending law school, Williams said, a student with opposing views deliberately signed up to be his note taker (a disability accommodation enabled Williams to get notes taken for days he missed). But Williams said the student refused to take notes for him on the days he missed class. After he reported the student to the university, the note taker would copy down the law cases discussed in class only as they appeared in the textbook. An investigation was eventually opened into the notetaking, according to Williams.

    “I have personally been warned that I would be blocked for advancement in the space of higher education for expressing opinions widely accepted outside of academia,” Williams said.

    Students and others who opposed the bill expressed concern with its language surrounding “controversial beliefs or policies,” which some said could be construed to prevent factual scientific concepts, like climate change, from being taught.

    SB 83 would require faculty and staff to “allow and encourage students to reach their own conclusions about all controversial matters and shall not seek to inculcate any social, political, or religious point of view.”

    The bill defines “controversial beliefs and policies” as “any belief or policy that is the subject of political controversy, including issues such as climate change, electoral politics, foreign policy, diversity, equity, and inclusion programs, immigration policy, marriage, or abortion.”

    It is unclear what would happen to diversity, equity, and inclusion programs if SB 83 is passed. The bill states: “No state institution shall fund, facilitate, or provide any support to any position, material benefit, policy, program, and activity that advantages or disadvantages faculty, staff, or students by any group identity, except that the institution may advantage citizens of the United States or this state.” (The Chronicle has included SB 83 in our interactive tracker of DEI legislation across the states.)

    A fiscal note on the bill’s financial impact — written by the Ohio Legislative Service Commission, a nonpartisan group that provides financial and policy analysis to the Ohio General Assembly — said that while passage of the bill could result in some cost savings for universities, it could also significantly increase costs.

    “Some of these provisions may marginally increase administrative costs for state institutions, while others will increase administrative costs more substantially. When taken as a whole, however, administrative costs may increase significantly, potentially resulting in the need to hire additional staff to handle the increased workload,” reads the analysis.

    The analysis also said that SB 83 would raise costs for the Ohio Department of Higher Education, which is funded by the state.

    Some students who testified against the bill said they are deliberately choosing to attend graduate school outside the state, and they believe other students will follow suit if SB 83 passes.

    “I applied to five of the best schools in the entire nation for my graduate field, and I got into every single one of them with funding to boot. All not in Ohio, because I am intimately familiar that this bill might actually impact my graduate education, and therefore, I am choosing to go elsewhere,” said Lalitha Pamidigantam.

    At Wednesday’s hearing, Sen. Jerry C. Cirino, a Republican and the bill’s primary sponsor, said SB 83 does not attack or weaken tenure.

    “I’ve had lots of dialogue with our university presidents about this subject, and they have made a strong case that eliminating tenure would be very disadvantageous for the state of Ohio, so this bill does not do that,” Cirino said.

    He was also adamant that the bill would not eliminate DEI programs.

    “DEI is not outlawed in SB 83. The mandatory nature of it would be,” Cirino said. He later added, “I’ve had a lot of questions from people who obviously haven’t read the bill, because” DEI is “not prohibited in SB 83. I’d just like to clear that up.”

    Kate Marijolovic

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  • Unconventional spellings are a ‘Badd Choyce’ for brand names

    Unconventional spellings are a ‘Badd Choyce’ for brand names

    Newswise — COLUMBUS, Ohio – While marketers seem to love creating new brand names by deliberately misspelling real words, a new study shows that consumers almost never like this tactic.

    In a series of studies, researchers found that consumers respond less positively in a variety of ways to new products when their brand names use unconventional spellings of real words, like “Klear” instead of “Clear.”

    “People just don’t like these types of names very much,” said Jesse Walker, co-author of the study and assistant professor of marketing at The Ohio State University’s Fisher College of Business. “Using these unconventional spellings often backfires.”

    Findings showed that consumers thought brands with these names were less sincere, according to study co-author John Costello, assistant professor of marketing at the University of Notre Dame and a PhD graduate of Ohio State.

    “Consumers see these names as just a persuasion tactic, a marketing gimmick, and that leads them to respond less positively,” Costello said.

    The study was published online recently in the Journal of Marketing.

    In one study, the researchers set up tables outside a college football stadium on two afternoons leading up to a home football game.  They had assistants pose as brand ambassadors distributing free samples of a new non-alcoholic seltzer.

    People coming to the tables were offered a choice of two seltzers.  One was always called “Deep.” The other was either called “Clear” or “Klear.”

    When presented the choice between Deep or Klear, people chose Klear only 48% of the time. But when they were offered “Clear” they chose that 62% of the time over “Deep.”

    “This was a real product choice where consumers were unaware they were participating in a study – and they clearly preferred the name with the conventional spelling,” Costello said.

    Other studies supported this result in a variety of different contexts.

    For example, in one online study, consumers selected their preference between two real food or clothing brands. The researchers chose new brands that were unlikely to be widely recognized.

    Sometimes one of the choices was a product with the true, unconventional spelling of the brand. One example was a clothing brand called “DSTLD.”  But in other cases, the researchers used the conventional spelling of the word used for the brand – in this case, “DISTILLED.”

    Results showed that participants were more likely to choose a brand when presented with the conventional spelling than when presented the real, unconventional spelling of the brand.

    Another study asked participants why they rated a brand with an unconventionally spelled name lower than one with the proper spelling.

    Results showed that participants thought the unconventional spelling was a gimmick or marketing tactic designed to make the brand seem cool or trendy. They also thought it made the brand seem less sincere – less honest, down-to-earth and wholesome.

    These findings all involved new brands, explained co-author Rebecca Reczek, professor of marketing at Ohio State. Established brands with unconventionally spelled names – like Krazy Glue or Krispy Kreme – probably won’t suffer from a backfire effect.

    “It may be that using these unconventional spellings was better accepted years ago when it was still more of a novelty,” Reczek said.

    “But now consumers just see it as a gimmick. New brands would be better off not going that route.”

    The researchers did other studies that found deliberately misspelling words can work in some limited cases, such as when the reason for selecting the name is seen as sincere, or when consumers are seeking a memorable experience – for example, a restaurant or bar. In one study, the researchers found that a bar called “Xtra Chilld Lounge” did appeal to consumers looking for a fun, memorable evening.

    But these are the exceptions, Walker said.

    “There are very few situations in which people actually like brand names with these unconventional spellings of real words,” he said.

    “But what is really interesting is that the marketing establishment doesn’t really seem to realize this.”

    In a pilot study of 100 marketing managers, the researchers found that most managers still believed that unconventional spelling in brand names was an effective tactic. And there are several recent books that still promote this approach, as well.

    “Our work shows there are many more negatives than positives for brands who try to use unconventional spellings for their names,” Costello said.

    Ohio State University

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  • A quasiparticle that can transfer heat under electrical control

    A quasiparticle that can transfer heat under electrical control

    Newswise — COLUMBUS, Ohio – Scientists have found the secret behind a property of solid materials known as ferroelectrics, showing that quasiparticles moving in wave-like patterns among vibrating atoms carry enough heat to turn the material into a thermal switch when an electrical field is applied externally.

    A key finding of the study is that this control of thermal conductivity is attributable to the structure of the material rather than any random collisions among atoms. Specifically, the researchers describe quasiparticles called ferrons whose polarization changes as they “wiggle” in between vibrating atoms – and it’s that ordered wiggling and polarization, receptive to the externally applied electrical field, that dictates the material’s ability to transfer the heat at a different rate. 

    “We figured out that this change in position of these atoms, and the change of the nature of the vibrations, must carry heat, and therefore the external field which changes this vibration must affect the thermal conductivity,” said senior author Joseph Heremans, professor of mechanical and aerospace engineering, materials science and engineering, and physics at The Ohio State University.  

    “People tend to think atom vibrations are a given fact and don’t respond to an electric field or a magnetic field. And we are saying you can affect them with an electric field.” 

    With the use of a simple external electrical stimulus, the thermal conductivity in this type of material can be changed at room temperature rather than at the extremely low temperatures required to control most candidate materials for solid-state heat switches, enhancing the possibilities for real-world applications of the technology, the researchers say. 

    The study is published Feb. 1, 2023, in the journal Science Advances

    The material used in the study is a common lead zirconium titanate ceramic belonging to a class of materials called piezoelectrics, which change shape when an electric field is applied to them or produce an electrical charge under mechanical stress. 

    Ferroelectrics, a subset of piezoelectrics, are materials in which the electrical charges on the atoms can spontaneously form electrical dipoles that all align in the same direction, forming what is known as polarization. These dipoles can be switched by an external electric field.  

    Until now, scientists had not formally written down how this polarization will move when heat is applied. In this new article, this motion is described by introducing the quasiparticle – called a ferron – that carries waves of polarization and heat at the same time. The ferron is sensitive to an external electric field, and that means the application of an external electrical field can turn the material into a heat switch. 

    “The quasiparticle has always been there. It just hasn’t been identified and measured,” said first author Brandi Wooten, a PhD student in materials science and engineering at Ohio State. 

    Wooten likened ferrons’ behavior to a stadium wave, with each sports fan representing a cell of atoms collected together in a crystal. 

    “You have all these atoms, and they have this special dipole – an atom with an electrical charge that moves up and down creates a dipole. You can think of people’s hands going up doing the wave as the dipole’s strength – if their hands are up, it’s really strong. If they’re a little bit down, it’s weaker, and if they’re all the way down, it’s negative,” she said. “That’s the dipole’s strength. We found that these special waves carry both heat and polarization, and we labeled them ferrons.” 

    This heat-transferring property is induced by the electric field through a phenomenon known as the piezoelectric strain: The lattice contracts or stretches when the voltage is applied, with atoms and forces between them moving back and forth, ultimately changing the mechanical properties of the material and, as a result, changing its thermal conductivity, said Heremans, also an Ohio Eminent Scholar in Nanotechnology. 

    “The ferron is also sensitive to strain in the solid. Since the ferron carries heat, that makes the amount of heat carried dependent on the electrical field,” he said. “So we wrote a new theory that relates an external electric field, the strain it induces in a ferroelectric, and ultimately how this strain affects the thermal conductivity.” 

    The theory is predictive, so researchers can now use it to find materials where the effect is much larger, ultimately leading to materials where it is large enough to be used in heat switches in everyday applications, like collection of solar power. 

    The application of an electrical field to the material produced a 2% difference between maximum and minimum conductivity – as the new theory predicted would be the case. A series of experiments quantifying the atomic vibrations through measuring the velocity of the material’s sound waves and equilibrium and transport properties validated “that this all depends only on the material structure, not necessarily what’s scattering the vibrations,” Wooten said.

    The researchers are now studying other materials that might increase that change in thermal conductivity by up to 15%, as the new theory predicts. 

    “Any application depends on us finding a material where the effect is much larger,” Heremans said. “We are looking for materials that have the right parameters.”

    This work was supported by the National Science Foundation, the U.S. Department of Defense, the Japanese Society for the Promotion of Science and the Japanese Science and Technology Agency. 

    Additional co-authors include Ryo Iguchi and Ken-ichi Uchida of the National Institute for Materials Science in Japan; Ping Tang and Gerrit Bauer of Tohoku University; and Joon Sang Kang of Ohio State.

     

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  • “Flexible electronics” may one day secure classified documents

    “Flexible electronics” may one day secure classified documents

    Both President Biden and former President Trump have had issues with having classified government documents in their possession that they were not supposed to have. But there may soon be a relatively simple way to prevent situations like this, according to Paul Berger, professor of electrical and computer engineering at The Ohio State University.

    Flexible electronics enables the production of thin, flexible stickers, like the radio frequency identification tags one finds on some items in stores to prevent shoplifting.  But unlike those “passive” tags, flexible electronics can also be “active” tags that allow whatever they are put on to be actively tracked. These flexible electronics are thinner cheaper, and more environmentally friendly than tracking devices like Apple AirTags. One day stickers with these flexible electronics could be printed and put on documents, allowing them to be tracked.

    Berger is available to discuss the future of flexible electronics and how he and his collaborators are working to increase the performance of these flexible electronics devices and build systems that will allow them to “scavenge” energy from light and Wi-Fi.

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  • Learning from habitat ‘haves’ to help save a threatened rattlesnake

    Learning from habitat ‘haves’ to help save a threatened rattlesnake

    Newswise — COLUMBUS, Ohio – Comparing the genetics and relocation patterns of habitat “haves” and “have-nots” among two populations of threatened rattlesnakes has produced a new way to use scientific landscape data to guide conservation planning that would give the “have-nots” a better chance of surviving.

    The study suggests that a collection of six relatively closely situated but isolated populations of Eastern massasauga rattlesnakes in northeast Ohio could grow their numbers if strategic alterations were made to stretches of land between their home ranges. The findings contributed to the successful application for federal funding of property purchases to make some of these proposed landscape changes happen.

    Reconnecting these populations could not only help restore Eastern massasaugas to unthreatened status, but establish a thriving habitat for other prey and predator species facing threats to their survival – satisfying two big-picture conservation concerns, researchers say. 

    “We aren’t just protecting massasaugas – we’re protecting everything else that’s there,” said H. Lisle Gibbs, professor of evolution, ecology and organismal biology at The Ohio State University and senior author of the study. “Even though we are focused on this species, protection of the habitat has all these collateral benefits.” 

    The research was published recently in the journal Ecological Applications

    Eastern massasauga rattlesnakes live in isolated spaces in midwestern and eastern North America and were listed as threatened under the Endangered Species Act in 2016 because of loss and fragmentation of their wetland habitat. 

    This study involves two known groups of Eastern massasaugas in Ohio: The Killdeer Plains Wildlife Area in north central Ohio, home to one of the most genetically diverse and largest populations in the country, numbering in the thousands, and six small, separate populations of Eastern massasaugas clustered near each other in Ashtabula County. 

    Study co-author Gregory Lipps, a field biologist at Ohio State, has studied the northeast Ohio groups for years. Federal officials once told him the populations are too small in number to be viable – but the genetics portion of this study showed that the populations had once been connected and deserve a second chance to rebuild. 

    “So now we are working on trying to reconnect them, to get them back to a viable population large enough to sustain itself even when disturbances happen that cause populations to fluctuate,” Lipps said. 

    First author Scott Martin, who completed this work as a PhD student in Gibbs’ lab, had previously sequenced genomes of 86 snakes from the six fragmented sites in northeast Ohio. For a genetic comparison in this new study, the team captured and collected blood samples from 109 snakes living together in the Killdeer Plains site. The genetic analysis, combined with where snakes were located at the time of capture, showed that the snakes living in fragmented sites in northeast Ohio were very distantly related, having stopped mingling at least three generations ago. 

    “Once we knew that they didn’t seem to be moving around, the real question is why aren’t they moving? It’s not that big of a distance – so we focused on finding out what was stopping them from being connected,” Martin said.

    Previous research had indicated how far a male Eastern massasauga snake could safely travel to find a mate and establish a family in a new location. GPS and genetic data from the Killdeer Plains and northeast Ohio population samples showed how much movement was common among related snakes in a successful group, and how uncommon relocation was among snakes living in fragmented habitats. Martin came up with the idea to combine all the data to see what was different about the landscapes in the two regions – and what could be interfering with snake relocation in the Ashtabula County groups. 

    “It seemed to be about specific features of the habitat,” Martin said. “If the snakes in northeast Ohio were moving as far as we would expect them to based on how the Killdeer snakes move and data on the species’ range, they should be able to move between these little sites. And yet when we look at the genetics and use pedigrees to see if there is any breeding between the sites, there’s just not.” 

    Using landscape maps, the researchers created models from the data that detailed the “resistance value” of various landscape features that would either help or hinder the northeast Ohio snakes’ movement to find mates. Wooded areas, cropland, and roads and housing developments – also called impervious surfaces – were found to be the main obstacles to snake relocation. Wet prairies are the ideal habitat for Eastern massasaugas. 

    “You can imagine two snakes in the same habitat that are probably likely very genetically similar because they can move easily. And then in this other region you have two snakes near each other, but on either side of a four-lane highway, and they will be genetically different because snakes don’t move across that highway, and over time they’ve diverged,” Martin said.

    “That means a highway would have a high resistance value and an open field would have a very low resistance value.” 

    These findings, and Lipps’ longtime work with northeast Ohio landowners and numerous conservation agencies, helped Ohio and Michigan collaborate on applying for and receiving a $2.3 million grant from the U.S. Fish and Wildlife Service to acquire land to benefit Eastern massasaugas in both states. 

    “To me, this is a clear example of where Ohio State basic research has produced practical results that have then been directly used to help conserve wildlife in Ohio – in other words, achieving one of the goals of a land-grant institution, which is to provide useful, practical knowledge of value to the citizens of the state,” Gibbs said.

    This research was supported by the State Wildlife Grants Program, administered jointly by the U.S. Fish and Wildlife Service and the Ohio Division of Wildlife, the Ohio Biodiversity Conservation Partnership and the National Science Foundation

    William Peterman, School of Environment and Natural Resources at Ohio State, was also a co-author on this study.

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  • Reliance on moose as prey led to rare coyote attack on human

    Reliance on moose as prey led to rare coyote attack on human

    Newswise — COLUMBUS, Ohio – Wildlife researchers have completed a study that may settle the question of why, in October 2009, a group of coyotes launched an unprovoked fatal attack on a young woman who was hiking in a Canadian park. 

    By analyzing coyote diets and their movement in Cape Breton Highlands National Park, where the attack occurred on a popular trail, the researchers concluded that the coyotes were forced to rely on moose instead of smaller mammals for the bulk of their diet – and as a result of adapting to that unusually large food source, perceived a lone hiker as potential prey. 

    The findings essentially ruled out the possibility that overexposure to people or attraction to human food could have been a factor in the attack – instead, heavy snowfall, high winds and extreme temperatures created conditions inhospitable to the small mammals that would normally make up most of their diet. 

    “The lines of evidence suggest that this was a resource-poor area with really extreme environments that forced these very adaptable animals to expand their behavior,” said lead author Stan Gehrt, a wildlife ecologist at The Ohio State University. 

    “We’re describing these animals expanding their niche to basically rely on moose. And we’re also taking a step forward and saying it’s not just scavenging that they were doing, but they were actually killing moose when they could. It’s hard for them to do that, but because they had very little if anything else to eat, that was their prey,” he said. “And that leads to conflicts with people that you wouldn’t normally see.”

    The research is published in the Journal of Applied Ecology

    The death of 19-year-old folk singer Taylor Mitchell is the only fatality resulting from a coyote attack on a human adult ever documented in North America. 

    Gehrt, who leads the Urban Coyote Research Project that has monitored coyotes living in Chicago since 2000, was consulted by media for his expertise after the attack. In urban areas like Chicago, where thousands of coyotes live among millions of people, injuries from coyote-human encounters are very rare. 

    “We had been telling communities and cities that the relative risk that coyotes pose is pretty low, and even when you do have a conflict where a person is bitten, it’s pretty minor,” said Gehrt, a professor in Ohio State’s School of Environment and Natural Resources. “The fatality was tragic, and completely off the charts. I was shocked by it – just absolutely shocked. 

    “A lot of people began wondering if we were at the front edge of a new trend, and if coyotes were changing their behavior. And we didn’t have good answers.” 

    Gehrt expanded an initial investigation of the fatal attack – and a few dozen less severe human-coyote incidents in the park before and after Mitchell’s death – into a detailed field study. Between 2011 and 2013, he and colleagues captured 23 adult and juvenile coyotes living in the Cape Breton park and fitted them with devices to document their movement and use of space. 

    To obtain dietary information, the team also snipped whiskers from the live-captured coyotes and from the bodies of coyotes implicated in the fatal attack and in other human-coyote incidents. For comparison, the researchers collected fur from potential prey – southern red-backed voles, shrews, snowshoe hare, white-tailed deer and moose – and hair from local barbershops that served as a proxy for human food.

    Seth Newsome, professor of biology at the University of New Mexico and corresponding author of the study, analyzed stable isotopes of carbon and nitrogen in these whisker and hair samples to determine what the coyotes had been eating in the months before they were captured or lethally removed from the population. 

    The analysis showed that, on average, moose constituted between half and two-thirds of the animals’ diets, followed by snowshoe hare, small mammals and deer. 

    “This dietary evidence was the critical piece to it,” Gehrt said. “Their diets changed because they’re taking advantage of whatever different food items are available at the time. We’re used to seeing big oscillations across the segments of whiskers depending on the season. But in this system, for these coyotes, we don’t see that – they flat line at the moose end, so there’s very little variation in their diet.”

    Samples from the coyotes that were confirmed to have been involved in the fatal attack showed they had been eating only moose, “and their diet wasn’t changing,” he said. An analysis of coyote droppings confirmed the isotope findings. The researchers found only a few examples of individual animals having eaten human food. 

    Beyond the dietary analysis, Gehrt and colleagues did test for the possibility that coyotes were familiar with humans, and therefore not fearful around people. The movement patterns showed that while the coyotes’ space use was extensive – likely related to the need to search far and wide for prey – the animals largely avoided areas of the park frequented by people and were more active at night during periods when daytime human use was at its highest. Prohibition on hunting and trapping in the park also removed a human threat. 

    “It’s a big area for these coyotes to live in and never have a negative experience with a human – if they have any experience at all,” Gehrt said. “That also leads to the logical assumption that we’re making, which is that it’s not hard for these animals to test to see whether or not people are a potential prey item.” 

    In cities and most other wilderness areas where coyotes live, food of all types is plentiful – suggesting only areas low on natural prey, like islands and remote northern climates, would pose a similar risk for coyote-human interactions, Gehrt said. Their survival in Cape Breton, he said, is attributable to their remarkable ability to adjust to their environment.

    “These coyotes are doing what coyotes do, which is, when their first or second choice of prey isn’t available, they’re going to explore and experiment, and change their search range,” he said. “They’re adaptable, and that is the key to their success.” 

    This work was supported by Parks Canada, the Nova Scotia Department of Lands and Forestry, and the Max McGraw Wildlife Foundation.

    Additional co-authors include Erich Muntz of Cape Breton Highlands National Park, Evan Wilson of Ohio State and Jason Power of the Nova Scotia Department of Lands and Forestry.

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    Ohio State University

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  • Toxins force construction of ‘roads to nowhere’

    Toxins force construction of ‘roads to nowhere’

    Newswise — COLUMBUS, Ohio – Toxins released by a type of bacteria that cause diarrheal disease hijack cell processes and force important proteins to assemble into “roads to nowhere,” redirecting the proteins away from other jobs that are key to proper cell function, a new study has found. 

    The affected proteins are known as actins, which are highly abundant and have multiple roles that include helping every cell unite its contents, maintain its shape, divide and migrate. Actins assemble into thread-like filaments to do certain work inside cells. 

    Researchers found that two toxins produced by the Vibrio genus of bacteria cause actins to start joining together into these filaments – which could be thought of as cellular highways on which cargo is delivered – at the wrong location inside cells, and headed in the wrong direction. 

    “Growing in the wrong direction is a totally new function that was not previously known and was not thought to be possible for actin filaments inside the cell,” said senior author Dmitri Kudryashov, associate professor of chemistry and biochemistry at The Ohio State University. “A large fraction of actin in the cell is consumed in formation of the ‘highways’ where they are not needed, so the cell resources are wasted and cannot be used to satisfy the cell’s basic needs.” 

    The research is published today (Nov. 18, 2022) in the journal Science Advances. 

    These disruptive toxins are called VopF and VopL, and are produced by two strains of Vibrio bacteria living in seawater: V. cholerae and V. parahaemolyticus, both of which can contaminate oysters and other shellfish that, when eaten raw, make people sick. 

    In this study, the research team zeroed in on describing the unexpected cellular activities rather than any further implications, such as how the hijacking relates to bacterial infection. 

    “We are looking at the interference at the molecular level – we have not focused here on how this cell function might affect humans,” said first and co-corresponding author Elena Kudryashova, a research scientist in chemistry and biochemistry at Ohio State. 

    “From a practical standpoint, this tells us more about these pathogens, and knowing your enemy helps you fight your enemy,” she said. “But finding something that we didn’t know was possible – for actin to behave in such a way inside the cell – raises new questions about whether this function might actually be needed, or could come about in some other way.” 

    Until now, actins have been known to assemble each filament in one way, originating from what is known as its pointed end and directed toward what is called the barbed end of the structure. Because they are limited in number, the actins disassemble as needed from the pointed end and are recycled to maintain directional activity toward the barbed end – and then these actin filaments perform functions, such as cell migration, contraction or division, as dictated by what the cell commands. 

    When the VopF and VopL toxins enter a cell, however, they attract actin molecules to start a new filament and cause the filaments to start assembling in this spot, which leads them to elongate in the direction of the pointed end – a reversal of their usual elongation direction.

    “The toxins start making these actin filament highways in the wrong place, building something that is useless for the cell, and the cell doesn’t know how to deal with it,” Kudryashov said. 

    This actin interference was observed using imaging of live cells containing individual toxin molecules. Though they don’t yet know all the consequences of this hijacking activity, the researchers said the results could include seepage of nutrients through damaged intestinal walls – which would provide food for the infectious bacteria waiting outside. 

    “Killing cells is not always necessary – disrupting cells’ barrier function can also be beneficial to pathogens,” Kudryashova said. 

    And that’s why the scientists want to learn more – whether other molecules can force actins to assemble “roads to nowhere,” and whether that strange filament formation might even be a beneficial mechanism under a different set of circumstances.

    “It’s quite possible that our own cells are doing this on some occasion, but we don’t know because actin has so many functions and not all of them are yet well understood,” Kudryashov said. 

    The Ohio State team collaborated with co-authors Ankita, Heidi Ulrichs and Shashank Shekhar of Emory University.

    This work was supported by grants from the National Institutes of Health.

     

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    Ohio State University

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  • Double trouble when 2 disasters strike electrical transmission infrastructure

    Double trouble when 2 disasters strike electrical transmission infrastructure

    Newswise — COLUMBUS, Ohio – One natural disaster can knock out electric service to millions. A new study suggests that back-to-back disasters could cause catastrophic damage, but the research also identifies new ways to monitor and maintain power grids.

    Researchers at The Ohio State University have developed a machine learning model for predicting how susceptible overhead transmission lines are to damage when natural hazards like hurricanes or earthquakes happen in quick succession.

    An essential facet of modern infrastructure, steel transmission towers help send electricity across long distances by keeping overhead power lines far off the ground. After severe damage, failures in these systems can disrupt networks across affected communities, taking anywhere from a few weeks to months to fix. 

    The study, published in the journal Earthquake Engineering and Structural Dynamics, uses simulations to analyze what effect prior damage has on the performance of these towers once a second hazard strikes. Their findings suggest that previous damage has a considerable impact on the fragility and reliability of these networks if it can’t be repaired before the second hazard hits, said Abdollah Shafieezadeh, co-author of the study and an associate professor of civil, environmental and geodetic engineering. 

    “Our work aims to answer if it’s possible to design and manage systems in a way that not only minimizes their initial damage but enables them to recover faster,” said Shafieezadeh. 

    The machine learning model not only found that a combination of an earthquake and hurricane could be particularly devastating to the electrical grid, but that the order of the disasters may make a difference. The researchers found that the probability of a tower collapse is much higher in the event of an earthquake followed by a hurricane than the probability of failure when the hurricane comes first and is followed by an earthquake.

    That means while communities would certainly suffer some setbacks in the event that a hurricane precedes an earthquake, a situation wherein an earthquake precedes a hurricane could devastate a region’s power grid. Such conclusions are why Shafieezadeh’s research has large implications for disaster recovery efforts.

    “When large-scale power grid systems are spread over large geographic areas, it’s not possible to carefully inspect every inch of them very carefully,” said Shafieezadeh. ”Predictive models can help engineers or organizations see which towers have the greatest probability of failure and quickly move to improve those issues in the field.”

    After training the model for numerous scenarios, the team created “fragility models” that tested how the structures would hold up under different characteristics and intensities of natural threats. With the help of these simulations, researchers concluded that tower failures due to a single hazardous event were vastly different from the pattern of failures caused by multi-hazard events. The study noted that many of these failings occurred in the leg elements of the structure, a segment of the tower that helps bolt the structure to the ground and prevents collapse. 

    Overall, Shafieezadeh said his research shows a need to focus on re-evaluating the entire design philosophy of these networks. Yet to accomplish such a task, much more support from utilities and government agencies is needed. 

    “Our work would be greatly beneficial in creating new infrastructure regulations in the field,” Shafieezadeh said. “This along with our other research shows that we can substantially improve the entire system’s performance with the same amount of resources that we spend today, just by optimizing their allocation.”

    This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy of the Republic of Korea (MOTIE). 

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    Ohio State University

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  • More accurate assessments of hurricane damage for responders

    More accurate assessments of hurricane damage for responders

    Newswise — COLUMBUS, Ohio – Emergency crews responding to hurricane-damaged areas may soon get an assist from a machine learning model that can better predict the extent of building damage soon after the storm passes.

    The model uses remote sensing from satellites that can generate building footprints from pre-hurricane images and then compare them with images taken after the storm.

    While some previous models could only tell if a building was damaged or not damaged, this deep learning model can accurately classify how much damage buildings sustained – key information for emergency responders, said Desheng Liu, co-author of the study and professor of geography at The Ohio State University.

    “Often it is difficult or impossible to rapidly assess the impact of a hurricane or other natural disaster from the ground,” Liu said.

    “Our goal is to be able to provide near real-time information about building damage that can help emergency crews respond to disasters.”

    Liu conducted the study with Polina Berezina, a graduate student in geography at Ohio State.  Their results were published earlier this year in the journal Geomatics, Natural Hazards and Risk.

    The researchers tested their new model on data from Hurricane Michael in 2018 and found that its overall damage assessment was 86.3% accurate in one region of Florida – an 11% improvement over one current state-of-the-art model.

    The research study area included Bay County and parts of neighboring Calhoun, Gulf, Washington, Leon and Holmes counties on the panhandle of Florida. Panama City is the major metropolitan area included in the study.

    The National Oceanic and Atmospheric Administration estimated the total damage to the U.S. economy from Hurricane Michael to equal $25 billion – of that, $18.4 billion occurred in Florida.

    The researchers obtained commercial satellite images for the study area.  Pre-hurricane images were from October or November 2017.  Post-event imagery was obtained on cloud-free days directly after the hurricane impact, mostly on Oct. 13, 2018.  The hurricane had made landfall on Oct. 10.

    Within the dataset the researchers used, the study area included 22,686 buildings.

    Berezina and Liu used a type of machine learning called convolutional neural networks (or CNN) to first generate building footprints from the pre-hurricane satellite imagery and then classify the amount of damage after the storm.

    Their model classified buildings as undamaged, minor damage, major damage or destroyed.

    Overall, the new model has an overall accuracy of 86.3%, improving upon the 75.3% accuracy of the support vector machine model (or SVM) to which it was compared.

    “The SVM struggled to distinguish between minor and major damage, which can be a major issue for teams responding after a hurricane,” Liu said.

    “Overall, our results for Hurricane Michael are promising.”

    In live hurricane situations, Liu said the model could be used to rate the probability that individual buildings are in a certain damage class – such as minor damage or major damage – to help direct emergency management and first responders to where they should check first.

    Ohio State University

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  • You’ve Probably Seen Yourself in Your Memories

    You’ve Probably Seen Yourself in Your Memories

    Pick a memory. It could be as recent as breakfast or as distant as your first day of kindergarten. What matters is that you can really visualize it. Hold the image in your mind.

    Now consider: Do you see the scene through your own eyes, as you did at the time? Or do you see yourself in it, as if you’re watching a character in a movie? Do you see it, in other words, from a first-person or a third-person perspective? Usually, we associate this kind of distinction with storytelling and fiction-writing. But like a story, every visual memory has its own implicit vantage point. All seeing is seeing from somewhere. And sometimes, in memories, that somewhere is not where you actually were at the time.

    This fact is strange, even unsettling. It cuts against our most basic understanding of memory as a simple record of experience. For a long time, psychologists and neuroscientists did not pay this fact much attention. That has changed in recent years, and as the amount of research on the role of perspective has multiplied, so too have its potential implications. Memory perspective, it turns out, is tied up in criminal justice, implicit bias, and post-traumatic stress disorder. At the deepest level, it helps us make sense of who we are.

    The distinction between first- and third-person memories dates back at least as far as Sigmund Freud, who first commented on it near the end of the 19th century. Not for another 80 years, though, did the first empirical studies begin fleshing out the specifics of memory perspective. And it was only in the 2000s that the field really started picking up steam. What those early studies found was that third-person memories were far less unusual than once thought. The phenomenon is associated with a number of mental disorders, such as depression, anxiety, and schizophrenia, but it is not merely a symptom of pathology; even among healthy people, it is quite common.

    Just how common is tricky to quantify. Peggy St. Jacques, a psychology professor at the University of Alberta who studies perspective in memory, told me that roughly 90 percent of people report having at least one third-person memory. For the average person, St. Jacques estimates, on the basis of her research, that about a quarter of memories from the past five years are third-person. (At least a couple of papers have found that women tend to have more third-person memories than men do, but a third study turned up no statistically significant difference; on the whole, research on possible demographic disparities is scant.) In certain rare cases, people may have only third-person memories. As you try to recall your own, be warned that things can get confusing fast. Perhaps you can call to mind early-childhood scenes that you picture from a third-person perspective. But it’s hard to know whether these are genuine memories translated from the first person to the third person, or third-person scenes constructed from stories or photographs. To some people, third-person memories are second nature; to others, they sound like science fiction.

    Why any given memory gets recalled from one perspective rather than the other is the result of a whole bunch of intersecting factors. People are more likely to remember experiences in which they felt anxious or self-conscious—say, when they gave a presentation in front of a crowd—in the third person, St. Jacques told me. This makes sense: When you’re imagining how you look through an audience’s eyes in the moment, you’re more likely to see yourself through their eyes at the time of recall. Researchers have also repeatedly found that the older a memory is, the more likely you are to recall it from the third person. This, too, is fairly intuitive: If first-person recollection is the ability to adopt the position—and inhabit the experience—of your former self, then naturally you’ll have more trouble seeing the world the way you did as a 6 year old than the way you did last week. The tendency for older memories to be translated into the third person may also have to do with the fact that the more distant the memory is, the less detail you’ll likely have, and the less detail you have, the less likely you are to be able to reassume the vantage point from which you originally witnessed the scene, David Rubin, a Duke University psychology professor who has published dozens of papers on autobiographical memory, told me.

    Less intuitive, perhaps, is the reverse: People are able to recall a scene in greater detail when they’re asked to take a first-person perspective than when they’re asked to take a third-person perspective. “Sometimes in a courtroom, an eyewitness to a holdup might be asked to recall what happened from the perspective of the clerk,” St. Jacques told me. But if her research is any indication, such tactics may blur rather than sharpen the witness’s memory. “Our research suggests that might actually be more likely to make the memory less vivid, make the eyewitness less likely to remember the specifics.”

    Even without an examiner’s instructions, such an eyewitness might be predisposed to recall the robbery in the third person: Researchers have found that people often translate traumatic or emotionally charged memories out of the first person. This may be because first-person memories tend to elicit stronger emotional reactions at the time of recall, and by taking a third-person perspective, we can distance ourselves from the painful experience, Angelina Sutin, a psychologist at Florida State University, told me. It may also be a function of the information at our disposal. In charged situations, Rubin said, people tend to zero in on the object of their anger or fear. Take the bank-robbery scenario: The police “want the teller to describe the person who’s robbing them, and instead he describes in great detail the barrel of the gun pointed at his head.” He can’t remember much beyond that. And so, lacking the information necessary to situate himself in his original perspective, he floats.

    This distancing effect has some fairly mind-bending potential applications, none more so, perhaps, than to the problem of near-death experiences. For many years, philosophers and psychologists have documented instances of people reporting that, in moments of trauma, they felt as though they were floating outside—usually above—their body. Rubin points out, however, that such reports are not in-the-moment descriptions but after-the-fact accounts. So he has a controversial idea: What in retrospect seems like an out-of-body experience may in fact be only the trauma-induced translation of a first-person memory into a third-person memory, one so compelling that it deceives you into thinking the experience itself occurred in the third person. The recaller, in this theory, is like a person peering through a convex window, mistaking a distortion of the glass for a distortion of the world.

    Traumatic dissociations are dramatic but by no means isolated cases of what Rubin calls the “constructive nature of the world.” In a 2019 review article on memory perspective, St. Jacques noted that shifting your vantage and fabricating an entirely new scene rely on the same mental processes occurring in the same regions of the brain. So similar are recollecting the past and projecting into the future that some psychologists lump them into a single category: “mental time travel.” Both are acts of construction. The distinction between memory and imagination blurs.

    At some level, people generally understand this, but rarely do we get so incontrovertible an example as with third-person memories. If you and a friend try to recall the decor at the restaurant where you got dinner last month, you might find that you disagree on certain points. You think the wallpaper was green, your friend thinks blue, one of you is wrong, and you’re both sure you’re right. With third-person memories, though, you know the memory is distorted, because you could not possibly have been looking at yourself at the time. If, without even realizing it, you can change something so central as the perspective from which you view a memory, how confident can you really be in any of the memory’s details?

    In this way, third-person memories are sort of terrifying. But shifts in perspective are more than mere deficiencies of memory. In her lab at Ohio State University, the psychologist Lisa Libby is investigating the relationship between memory perspective and identity—that is, the way shifts in our memory play a role in how we make sense of who we are. In one experiment, Libby asked a group of female undergraduates whether they were interested in STEM. The students then participated in a science activity, some in a version designed to be engaging, others in a version designed to be boring. Afterward, when she surveyed the undergrads about how they’d found the exercise, she instructed some to recall it from a first-person perspective and others from a third-person perspective. The first-person group’s answers corresponded to how interesting the task really was; the third-person group’s corresponded to whether they’d said they liked STEM in the initial survey.

    Libby’s takeaway: Each type of memory seems to have its own function. “One way to think about the two perspectives is that they help you represent … two different components of who you are as a person,” Libby told me. Remembering an event from a first-person perspective puts you in an experiential frame of mind. It helps you recall how you felt in the moment. Remembering an event from a third-person perspective puts you in a more narrative frame of mind. It helps you contextualize your experience by bringing it in line with your prior beliefs and fitting it into a coherent story. Memory is the—or at least a—raw material of identity; perspective is a tool we use to mold it.

    Maybe the most interesting thing about all of this is what it suggests about the human proclivity for narrative. When we shift our memories from one perspective to another, we are, often without even realizing it, shaping and reshaping our experience into a story, rendering chaos into coherence. The narrative impulse, it seems, runs even deeper than we generally acknowledge. It is not merely a quirk of culture or a chance outgrowth of modern life. It’s a fact of psychology, hardwired into the human mind.

    Jacob Stern

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