By studying rhesus monkeys, researchers have identified a brain network dedicated to processing social interactions -- a discovery that offers tantalizing clues to the origins of our ability to understand what other people are thinking.
Johns Hopkins researchers say they have identified a new way that cells in the brain alert the rest of the body to recruit immune cells when the brain is injured. The work was completed in mouse models that mimic infection, stroke or trauma in humans.
Childhood bullying may lead to long-lasting health consequences, impacting psychosocial risk factors for cardiovascular health well into adulthood, according to a study published in Psychological Science, a journal of the Association for Psychological Science. The unique study tracked a diverse group of over 300 American men from first grade through their early thirties and the findings indicate that being a victim of bullying and being a bully were both linked to negative outcomes in adulthood.
Neuroscientists at Tufts have discovered a new signaling pathway that directly connects the brain's NMDA and a7nACh receptors -- both associated with learning and memory -- which has significance for development of drugs to treat schizophrenia. Astrocytes are the key elements that link the receptors.
Researchers hoping for a single product to protect against both HIV and unintended pregnancy took an important step toward realizing their goal with the start of a trial of a vaginal ring containing the antiretroviral drug dapivirine and a hormonal contraceptive. A dapivirine-only ring that women use a month at a time was safe and helped prevent HIV in two large trials. The new ring adds levonorgestrel and could be used for three months.
Long thought to simply pass on information received from the senses, the thalamus may also quickly assemble the circuits that enable successful decisions.
Tourette disorder afflicts as many as one person in a hundred worldwide with potentially disabling symptoms including involuntary motor and vocal tics. However, researchers have so far failed to determine the cause of the disorder, and treatments have only limited effectiveness, in part because the genetics underlying the disorder have remained largely a mystery.
A team, led by the University of California, Los Angeles' Ian Larkin and Carnegie Mellon University's George Loewenstein, examined restrictions at 19 academic medical centers placed on pharmaceutical representatives' visits to doctors' offices. Published in the Journal of the American Medical Association, the results reveal that the restrictions caused physicians to switch from prescribing drugs that were more expensive and patent-protected to generic, significantly cheaper drugs.
A large new study from the Psychiatric Genomics Consortium provides the first molecular genetic evidence that genetic influences play a role in the risk of getting Posttraumatic Stress Disorder (PTSD) after trauma.
New research from Caltech clarifies the once-mysterious role of the amygdala.