Medical Xpress news
Medical Xpress / Study answers long-debated structural question of primate cone photoreceptors
For more than 60 years, scientists have debated a basic structural question about cone photoreceptors, the cells that let vertebrates see color: Are their light-sensing disk membranes closed off inside the cell, or are they ...
Medical Xpress / 'Feature interference,' and why your brain struggles with uncertain tasks
Multitasking feels like a required skill in modern life, but as anyone who has tried to keep track of multiple chat windows, an email inbox and a stream of phone notifications during a video call can tell you, figuring out ...
Medical Xpress / Newly mapped brain circuit offers clues to how slow nasal breathing eases anxiety
A slow breath in and out does the trick for many people when calming their nerves and dealing with anxiety, a disorder that affects millions of people worldwide. Pranayama, Taoism and meditation have long used slow nasal ...
Medical Xpress / Women who hit menopause early see faster brain aging and earlier Alzheimer's diagnosis
Menopause is more than just the end of a woman's reproductive years. It brings a cascade of hormonal changes that can affect overall well-being, giving rise to a range of physical and emotional symptoms. A recent study published ...
Medical Xpress / Protein-based MRI agent detects lung cancer and hidden metastases earlier than current scans
A multi-institutional research team led by Georgia State University Regents' Professor Emerita of Biochemistry and Biophysical Chemistry Jenny J. Yang has developed a new class of protein-based MRI contrast agents that detect ...
Medical Xpress / Psychedelics and anesthetics create mirror image patterns in the brain
For something so familiar to human experience, consciousness is still a mystery. Each day, people cycle through wakefulness and sleep, from a higher level of consciousness to a lower one. What's more, some people alter their ...
Medical Xpress / A burst of 'pink noise' may lead to more restorative sleep
During the day, waste products such as lactic acid and worn-out proteins build up in the brain. When we sleep at night, waves of cerebrospinal fluid (CSF) help wash away this waste, keeping the brain healthy.
Medical Xpress / New imaging combines light and sound to watch brain oxygen supply in real time
The brain is a black box of densely packed neurons, blood vessels and immune cells, all locked away in a sealed skull. WashU's Song Hu has dedicated his career to unlocking that puzzle box by developing new ways to "see" ...
Medical Xpress / Calorie restriction reveals a potential way to slow age-related DNA mutations
Mutations are changes in the molecular "letters" that make up DNA, the genetic blueprint for cells. Mutations build up with age in every cell when DNA is damaged or when cells make mistakes in fixing or copying it. Most mutations ...
Medical Xpress / Highly potent compound that blocks Ebola virus entry discovered
A University of Minnesota–led multi-institutional research team has discovered a highly potent small molecule that blocks Ebola virus entry by stabilizing the virus's entry protein and provides strong protection when given ...
Medical Xpress / Psychiatrists agree on a diagnosis in only 55% of cases, international study finds
In the 1970s, psychiatric diagnoses were marked by considerable uncertainty and disagreement. Since then, organizations such as the American Psychiatric Association and the World Health Organization (WHO) have worked to develop ...
Medical Xpress / Tiny astrocyte sensors in the brain's fear center point to a potential target for anxiety and depression
A new study led by UCLA Health researchers has identified a specific type of brain cell and a tiny structure on its surface that changes when the body is under stress, which may help explain why stress can lead to anxiety ...
