Scientists at UC San Francisco have discovered how memory recall is linked to decision-making in rats, showing that measurable activity in one part of the brain occurs when rats in a maze are playing out memories that help them decide which way to turn. The more they play out these memories, the more likely they are to find their way correctly to the end of the maze.
Brain
News stories about mass shootings involving a shooter with mental illness heighten readers' negative attitudes toward persons with serious mental illness, according to a new report by the Johns Hopkins Bloomberg School of Public Health. The researchers also examined how such news stories impact support for policies to reduce gun violence.
(Embargoed) CHAPEL HILL, N.C. – New research from the University of North Carolina School of Medicine for the first time explains exactly how two brain regions interact to promote emotionally motivated behaviors associated with anxiety and reward.
The findings could lead to new mental health therapies for disorders such as addiction, anxiety, and depression. A report of the research was published online by the journal, Nature, on March 20, 2013.
Sleep plays an important role in the brain's ability to consolidate learning when two new potentially competing tasks are learned in the same day, research at the University of Chicago demonstrates.
Other studies have shown that sleep consolidates learning for a new task. The new study, which measured starlings' ability to recognize new songs, shows that learning a second task can undermine the performance of a previously learned task. But this study is the first to show that a good night's sleep helps the brain retain both new memories.
Cognitive problems with memory and behavior experienced by individuals with schizophrenia are linked with changes in brain activity; however, it is difficult to test whether these changes are the underlying cause or consequence of these symptoms. By altering the brain activity in mice to mimic the decrease in activity seen in patients with schizophrenia, researchers reporting in the Cell Press journal Neuron on March 20 reveal that these changes in regional brain activity cause similar cognitive problems in otherwise normal mice.
WINSTON-SALEM, N.C. – March 20, 2013 – New research from Wake Forest Baptist Medical Center is giving radiation oncologists who treat brain tumors a better understanding of how to preserve the brain's functions while still killing cancer.
Ann M. Peiffer, Ph.D., assistant professor of radiation oncology at Wake Forest Baptist, and colleagues looked at how radiation treatment to different brain areas impacts function to help protect cognition for patients during and after radiation therapy and beyond.
Our understanding of brain activity has traditionally been linked to brain areas – when we speak, the speech area of the brain is active. New research by an international team of psychologists led by David Alexander and Cees van Leeuwen (KU Leuven – University of Leuven) shows that this view may be overly rigid. The entire cortex, not just the area responsible for a certain function, is activated when a given task is initiated. Furthermore, activity occurs in a pattern: waves of activity roll from one side of the brain to the other.
Regular family suppers contribute to good mental health in adolescents, according to a study co-authored by McGill professor Frank Elgar, Institute for Health and Social Policy. Family meal times are a measurable signature of social exchanges in the home that benefit adolescents' well-being – regardless of whether or not they feel they can easily talk to their parents.
The mystery of exactly how consumption of extra virgin olive oil helps reduce the risk of Alzheimer's disease (AD) may lie in one component of olive oil that helps shuttle the abnormal AD proteins out of the brain, scientists are reporting in a new study. It appears in the journal ACS Chemical Neuroscience.
PROBLEMS in accessing donor sperm and eggs at home appear to be behind a reported increase in the number of UK citizens who seek fertility treatment abroad, despite the fact that this is widely seen as risky. Now, a team of academic experts, including a University of Huddersfield professor, have investigated the phenomenon and analysed the attitudes of health professionals.
Children who are later diagnosed with autism have subtle but measurable differences in attention as early as 7 months of age, finds a study published today in the American Journal of Psychiatry. Researchers found that infants who went on to be diagnosed with autism are slower to shift their gaze from one object to another, compared to peers who did not receive the diagnosis. The scientists also identified specific brain circuits that seem to cause the slower response.
CHAPEL HILL, N.C. – Infants at 7 months of age who go on to develop autism are slower to reorient their gaze and attention from one object to another when compared to 7-month-olds who do not develop autism, and this behavioral pattern is in part explained by atypical brain circuits.
Those are the findings of a new study led by University of North Carolina School of Medicine researchers and published online March 20 by the American Journal of Psychiatry.
CHICAGO --- Selective serotonin reuptake inhibitor (SSRI) antidepressants taken by a woman during pregnancy do not impact her infant's growth over the first year, reports a new study from a Northwestern Medicine scientist.
There had been concern that antidepressant treatment during pregnancy reduced growth during the first year. Previous data suggested depression during pregnancy also could diminish infant growth.
Personal View: The new somatic symptom disorder in DSM-5 risks mislabeling many people as mentally ill
Millions of people could be mislabeled as mentally ill when psychiatry's bible of diagnoses is updated in May, warns a senior doctor in this week's BMJ.
The next edition of the American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM-5) – used around the world to classify mental disorders - will include a new category of somatic symptom disorder.
Washington, DC — Sexually naïve male mice respond differently to the chemical signals emitted by newborn pups than males that have mated and lived with pregnant females, according to a study published March 20 in The Journal of Neuroscience. The findings may help scientists to better understand the changes that take place in the brains of some mammals during the transition into parenthood.