A new cross-disciplinary study by Washington University in St. Louis researchers has uncovered an unexpected psychological phenomenon at the intersection of human behavior and artificial intelligence (AI): When told they were training AI to play a bargaining game, participants actively adjusted their own behavior to appear more fair and just, an impulse with potentially important […]
Researchers at Washington University in St. Louis have spent the better part of the decade studying the ins and outs of how locusts smell, including how odors affect the insect’s behavior. In research recently published in eLife, Barani Raman, PhD, a professor of biomedical engineering at the McKelvey School of Engineering, starts to map out just how olfactory […]
Glioblastoma is an aggressive brain cancer that has no cure. A recent chart study of patients with glioblastoma found that taking chemotherapy in the morning was associated with a three- to six-month increase in median survival. Now a study from Washington University in St. Louis reports that glioblastoma cells have built-in circadian rhythms that create better […]
A new imaging technique developed by engineers at Washington University in St. Louis can give scientists a much closer look at fibril assemblies — stacks of peptides that include amyloid beta, most notably associated with Alzheimer’s disease. These cross-β fibril assemblies are also useful building blocks within designer biomaterials for medical applications, but their resemblance […]
Major life changes can affect personality, and the COVID-19 pandemic was the rare big life event that all humans shared together. “This was a really unique opportunity to see how a life event that’s happening at the global stage to the entire population at the same time is changing personality,” said Emily Willroth, PhD, an […]
In the United States, more than one-fourth of adults over age 40 have an eye disease, including glaucoma, cataracts or age-related macular degeneration, or a chronic health condition that affects the eyes, such as diabetic retinopathy. These conditions are a strain on an individual’s health as well as on the health-care system, yet early diagnosis […]
The world of online dating can be overwhelming with the dizzying array of options for attracting a partner, but new research from Washington University in St. Louis shows that those looking for love may have more success if they also seek a sense of purpose in life. Researcher Isabella D’Ottone, in the lab of Patrick […]
Sleep is a fundamental need, just like food or water. “You’ll die without it,” said Keith Hengen, PhD, an assistant professor of biology at Washington University in St. Louis. But what does sleep actually accomplish? For years, the best researchers could say is that sleep reduces sleepiness — hardly a satisfying explanation for a basic requirement […]
Older adults spend less time worrying and more time staying on task, according to a new study by WashU’s psychological and brain sciences researchers. We’re all guilty of letting our minds wander when we’re supposed to be doing something else. A little distraction is likely inevitable. But a new study led by Matt Welhaf, PhD, […]
The inviting smell of a freshly baked cookie immediately triggers a motor response to search for the source of that smell. Often the cookie can be easily found. This everyday event that we perform without a thought is an amazing feat that combines our superior ability to smell the cookie and computational prowess to determine […]
The blood-brain barrier, the body’s way of shielding sensitive brain tissue from viruses, toxins and other harmful substances in the blood, can pose a problem for physicians caring for patients with suspected brain diseases such as cancer. Molecular and genetic information would be invaluable for confirming a diagnosis and guiding treatment decisions, but such molecules […]
Multi-omics is a research approach that leverages the power of several different “omics” data types at once to build a detailed picture of factors that contribute to human health and disease. The National Institutes of Health (NIH) is channeling $50.3 million over the next five years into a new consortium dedicated to advancing the generation […]
A multi-institutional research project led by Todd Braver, PhD, a professor of psychological and brain sciences in Arts & Sciences at Washington University in St. Louis, received a Multidisciplinary University Research Initiative (MURI) award from the U.S. Department of Defense to study attention control and strategies to improve it. The project — “A computational cognitive neuroscience framework […]
Babies are born with brains pre-organized into areas dedicated to movement, vision, hearing and other functions, a critical infrastructure that equips them to start learning about the world from the moment they take their first breaths. But little is known about how the brain’s architecture is built because of the challenges involved in studying brain […]
Early social and environmental exposures can have large and lasting effects on child development and adult health. One of the systems in the human body that is vulnerable to external influence is the gut microbiome: the community of bacteria that live in the gastrointestinal tract. Some variations in the human gut microbiome are important because […]
During the rainy breeding season, the underwater “conversation” among electric fish changes. Fish revved up to make a match broadcast slightly different signals to advertise their presence and identify compatible mates. New research from Washington University in St. Louis shows that the hormone testosterone — which naturally triggers male electric fish to elongate the electric […]
Everyone has scents that naturally appeal to them, such as vanilla or coffee, and scents that don’t appeal. What makes some smells appealing and others not? Barani Raman, PhD, a professor of biomedical engineering at the McKelvey School of Engineering at Washington University in St. Louis, and Rishabh Chandak, who earned bachelor’s, master’s and doctoral […]
A spinal cord injury is a life-altering event, and the effects, such as muscle weakness and paralysis, can dramatically disrupt a person’s life. While there is no cure for paralysis, there has been some progress in developing potential treatment options to improve symptoms. Still, much of it remains out of reach to many patients. A […]
When the human head experiences any kind of movement — from nodding yes or no to heading a soccer ball or being jolted in a car crash — the brain moves inside the skull, leading to deformation of the tissue. Such deformations are key to understanding traumatic brain injury but are challenging to study since […]
Researchers have developed methods to study and manipulate areas of the brain, though many of those methods are restricted by the limited depth that light can reach within the brain. A multidisciplinary team at Washington University in St. Louis plans to overcome that limitation by integrating ultrasound with genetics to precisely modify neurons in the […]
Now that the emergency phase of the COVID-19 pandemic has ended, scientists are looking at ways to surveil indoor environments in real time for viruses. By combining recent advances in aerosol sampling technology and an ultrasensitive biosensing technique, researchers at Washington University in St. Louis have created a real-time monitor that can detect any of […]
The myriad ways in which we use social media can be grouped into four broad categories, each of which is associated with a cluster of specific personality and behavioral traits, suggests new research from Washington University in St. Louis. “Social media is here to stay, so clarifying how people use social media and raising awareness […]
Matthew Lew, PhD, an associate professor of electrical and systems engineering at the McKelvey School of Engineering at Washington University in St. Louis, has received a five-year $2 million Maximizing Investigators’ Research Award (MIRA) from the National Institutes of Health (NIH) to support his ongoing work to improve microscopic imaging techniques. Lew will use the […]
Tumors are composed of rapidly multiplying cancer cells. Understanding which biochemical processes fuel their relentless growth can provide hints at therapeutic targets. Researchers from Washington University in St. Louis have developed a technology to study tumor growth in another dimension — literally. The scientists established a new method to watch what nutrients are used at […]
People who endure the daily hassles of big cities often romanticize life in the country. But rural living is not necessarily the carefree, idyllic experience that many people imagine, said Emily Willroth, PhD, an assistant professor of psychological and brain sciences in Arts & Sciences at Washington University in St. Louis. Willroth co-authored a study in […]
Some mammals and birds have a clever way to preserve energy and heat by going into torpor, during which their body temperature and metabolic rate drop to allow them to survive potentially fatal conditions in the environment, such as extreme cold or lack of food. While a similar condition was proposed for scientists making flights […]
Depression and anxiety are among the most common mental health disorders in the United States, but more than half of people struggling with the conditions are not diagnosed and treated. Hoping to find simple ways to detect such disorders, mental health professionals are considering the role of popular wearable fitness monitors in providing data that […]
Like the lymphatic system in the body, the glymphatic system in the brain clears metabolic waste and distributes nutrients and other important compounds. Impairments in this system may contribute to brain diseases, such as neurodegenerative diseases and stroke. A team of researchers in the McKelvey School of Engineering at Washington University in St. Louis has […]
Washington University School of Medicine in St. Louis has received two grants totaling $22.5 million to help lead national efforts to understand how DNA changes create differences in genomes across tissues within the same person. This variation — called somatic mosaicism — can change how cells operate and affect early development, disease risk, the aging […]
Every day, we face a series of opportunities to do the right thing. Sometimes we seize those moments; other times, we don’t. So, why do we make these choices, and what drives some people to take the moral high ground? Jessie Sun, PhD, an assistant professor of psychological and brain sciences in Arts & Sciences […]
A new deep learning tool from Keith Hengen allows scientists to give neurons a “computational fingerprint,” work that could significantly advance our understanding of the building blocks of thought. The 86 billion neurons of the human brain are involved in constant banter, sending and receiving codes written in strings of electrical impulses. Listening to these […]
A new study from a Washington University researcher offers fresh insights into how the brain goes to great lengths to process and remember everyday events. Zachariah Reagh, PhD, an assistant professor of psychological and brain sciences in Arts & Sciences at Washington University in St. Louis, and co-author Charan Ranganath of the University of California, Davis, used […]
A new study co-authored by Joshua Jackson, PhD, the Saul and Louise Rosenzweig Associate Professor in Personality Sciences in Arts & Sciences at Washington University in St. Louis, explores how parents’ personalities — boisterous or reserved, agreeable or cranky, concerned or care-free — can shape the lives of their children, for better or worse. The study […]
One of the more intriguing paradoxes emerging from the rubble of the COVID-19 pandemic is new evidence suggesting that older adults — those at the greatest risk of severe illness and death from the virus — fared much better than their younger counterparts when it comes to coping with pandemic-related distress, anxiety, depression and social […]
Computer software developed at Washington University School of Medicine in St. Louis can predict what happens to complex gene networks when individual genes are missing or dialed up more than usual. Such genetic networks play key roles in early embryonic development, guiding stem cells to form specific cell types that then build tissues and organs. […]
Several progressive neurodegenerative disorders, including Alzheimer’s disease, are defined by having tau proteins in the brain. Researchers are seeking to identify the mechanisms behind these tau proteins to develop treatments, however, their efforts to detect biomarkers in blood has been hampered by the protective blood-brain barrier. At Washington University in St. Louis, new research from […]
It’s almost Valentine’s Day, and love is in the air. Or in the waxy coating on your skin, if you are a vinegar fly. That’s where flies encounter pheromones that play an important role in regulating sexual attraction. Flies use pheromones to ensure that they court and mate with members of the same species. As […]
A new multidisciplinary center focused on biomolecular condensates — distinct molecular communities that make up the building blocks of life — has launched at the McKelvey School of Engineering at Washington University in St. Louis. The center kicked off with an inaugural symposium Oct. 14, highlighted by the Condensates Colloquium Series. Center director Rohit Pappu, PhD, […]
During the height of the COVID-19 pandemic, it wasn’t unusual to see and hear public health announcements geared toward older populations because they were more susceptible to severe illness. Over and over, older adults were referred to as “vulnerable.” Meghan McDarby, a former PhD student, Catherine Ju, a former undergraduate student, and Matthew Picchiello, a […]
Unfolded proteins are unhealthy proteins. When found inside of cells, they are rounded up, identified, and destroyed. This is an important quality-control process, especially in the brain and the heart. How these unfolded proteins are identified, however, has been a mystery. Now, research led by Kiersten Ruff, a senior research scientist in the lab of […]
Over the past several years, managing one’s mental health has become more of a priority with an increased emphasis on self-care. Depression alone affects more than 300 million people worldwide annually. Recognizing this, there is significant interest to leverage popular wearable devices to monitor an individual’s mental health by measuring markers such as activity levels, […]
Children who were exposed to cannabis in the womb continue to show elevated rates of symptoms of psychopathology — depression, anxiety and other psychiatric conditions — even as, at ages 11 and 12, they head toward adolescence, according to research from the Department of Psychological & Brain Sciences’ BRAIN Lab, led by Ryan Bogdan, PhD, associate […]
People with spinal cord injuries often experience lifelong movement impairment or paralysis, for which there is no cure. When coupled with rehabilitative exercise, electrical spinal cord stimulation can help restore some movement, though the mechanisms of how the nerves in the spinal cord recover are unknown. Ismael Seáñez, PhD, assistant professor of biomedical engineering at […]
People who were more distressed — showing signs of anxiety or depression — during the COVID-19 pandemic were less likely to follow some best practice recommendations from the Centers for Disease Control and Prevention, according to a new study by Washington University in St. Louis researchers. They found, however, that those same people were more […]
For over a century, cancer cell metabolism has been viewed as something of a paradox. New work from researchers at Washington University in St. Louis shows that it might not be such an anomaly after all. The study is published Aug. 15 in Molecular Cell. Glucose, a common sugar in food, is one of the most […]
Having positive social interactions is associated with older adults’ sense of purposefulness, which can fluctuate from day to day, according to research from the Department of Psychological & Brain Sciences in Arts & Sciences at Washington University in St. Louis. And although these findings, published in the July 2022 issue of the American Journal of Geriatric […]
Every cell contains millions of protein molecules. Some of them have the ability to phase-separate to form non-membrane-bound compartments, called biomolecular condensates, inside a cell. It has long been assumed that there was no further structure underlying these condensates, only solution-soluble proteins. A research group led by Rohit Pappu, PhD, the Gene K. Beare Distinguished Professor […]
In one of the first studies to look at the association between selective serotonin reuptake inhibitors (SSRI) medications and brain development in young children, research from the Behavioral Research and Imaging Neurogenetics (BRAIN)Lab at Washington University in St. Louis found no association between children’s exposure to the drugs in the womb and later childhood depression. The study […]
Research from the lab of Matthew Lew, PhD at Washington University in St. Louis offers entirely new ways to see the very small. The research — two papers by PhD students at the McKelvey School of Engineering — was published in the journals Optica and Nano Letters. They have developed novel hardware and algorithms that allow them to visualize the […]
Crows and ravens are well known for their black color and the harsh “caw” sound they make. They are intelligent birds that use tools, solve complex abstract problems and speak a volume of words. But what is less well appreciated is how diverse they are. Their diversity is accompanied by their ability to live all […]