Tourette syndrome is a developmental disorder characterized by involuntary, repetitive, and stereotyped movements or utterances. Now researchers reporting in the Cell Press journal Current Biology on September 25 have new evidence to explain how those with Tourette syndrome in childhood often manage to gain control over those tics. In individuals with the condition, a portion of the brain involved in planning and executing movements shows an unusual increase compared to the average brain in the production of a primary inhibitory neurotransmitter known as GABA.
Brain
Physical exercise has many beneficial effects on human health, including the protection from stress-induced depression. However, until now the mechanisms that mediate this protective effect have been unknown. In a new study in mice, researchers at Karolinska Institutet in Sweden show that exercise training induces changes in skeletal muscle that can purge the blood of a substance that accumulates during stress, and is harmful to the brain. The study is being published in the prestigious journal Cell.
A chemical in the brain plays a vital role in controlling the involuntary movements and vocal tics associated with Tourette Syndrome (TS), a new study has shown.
The research by psychologists at The University of Nottingham, published in the latest edition of the journal Current Biology, could offer a potential new target for the development of more effective treatments to suppress these unwanted symptoms.
Many of the choices we make are informed by experiences we've had in the past. But occasionally we're better off abandoning those lessons and exploring a new situation unfettered by past experiences. Scientists at the Howard Hughes Medical Institute's Janelia Research Campus have shown that the brain can temporarily disconnect information about past experience from decision-making circuits, thereby triggering random behavior.
(Edmonton, AB) Every year in Canada about 50,000 people suffer from a stroke, caused either by the interruption of blood flow or uncontrolled bleeding in the brain. While many environmental risk factors exist, including high blood pressure and smoking, stroke risk is also frequently inherited. Unfortunately, remarkably little is known regarding stroke's genetic basis.
A study from the University of Alberta, published in the Journal of Clinical Investigation, extends knowledge of stroke's genetic underpinnings and demonstrates that in some cases it originates in infancy.
New research by biomedical engineers at the University of Minnesota shows that people who practice yoga and meditation long term can learn to control a computer with their minds faster and better than people with little or no yoga or meditation experience. The research could have major implications for treatments of people who are paralyzed or have neurodegenerative diseases.
The research is published online in TECHNOLOGY, a new scientific journal featuring cutting-edge new technologies in emerging fields of science and engineering.
New evolutionary psychology research shows gender differences in age preferences regarding sexual partners.
Men and women have different preferences regarding the age of their sexual partners and women's preferences are better realized than are men's. Regarding the age of their actual sexual partners, the difference is however much smaller. Researchers in psychology at Åbo Akademi University in Turku, Finland, suggest that this pattern reflect the fact that when it comes to mating, women control the market.
Inattention, hyperactivity, and impulsive behavior in children with ADHD can result in social problems and they tend to be excluded from peer activities. They have been found to have impaired recognition of emotional expression from other faces. The research group of Professor Ryusuke Kakigi of the National Institute for Physiological Sciences, National Institutes of Natural Sciences, in collaboration with Professor Masami K.
TORONTO, September 25, 2014 – Perfectionism is a bigger risk factor in suicide than we may think, says York University Psychology Professor Gordon Flett, calling for closer attention to its potential destructiveness, adding that clinical guidelines should include perfectionism as a separate factor for suicide risk assessment and intervention.
The traditional understanding in neuroscience is that tactile sensations from the skin are only assembled to form a complete experience in the cerebral cortex, the most advanced part of the brain. However, this is challenged by new research findings from Lund University in Sweden that suggest both that other levels in the brain play a greater role than previously thought, and that a larger proportion of the brain's different structures are involved in the perception of touch.
Stroke is one of the leading causes of death worldwide. While many lines of evidence suggest that stroke risk is heritable, only a small number of genes associated with stroke have been identified. A new study in the Journal of Clinical Investigation identifies two genes that underlie cerebral small-vessel disease (CSVD), a risk factor for stroke. Ordan Lehmann and colleagues at the University of Alberta analyzed genome-wide association data from individuals that received brain MRI scans as part of the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) study.
CHICAGO --- The first animal model for ALS dementia, a form of ALS that also damages the brain, has been developed by Northwestern Medicine® scientists. The advance will allow researchers to directly see the brains of living mice, under anesthesia, at the microscopic level. This will allow direct monitoring of test drugs to determine if they work.
This is one of the latest research findings since the ALS Ice Bucket Challenge heightened interest in the disease and the need for expanded research and funding.
MINNEAPOLIS – New research suggests that people without dementia who begin reporting memory issues may be more likely to develop dementia later, even if they have no clinical signs of the disease. The study is published in the September 24, 2014, online issue of Neurology®, the medical journal of the American Academy of Neurology.
LEXINGTON, Ky. (Sept. 24, 2014) -- New research by scientists at the University of Kentucky's Sanders-Brown Center on Aging suggests that people who notice their memory is slipping may be on to something.
The research, led by Richard Kryscio, PhD, Chairman of the Department of of Biostatistics and Associate Director of the Alzheimer's Disease Center at the University of Kentucky, appears to confirm that self-reported memory complaints are strong predictors of clinical memory impairment later in life.
Two different family-based therapies are both effective at combating anorexia nervosa in teenagers, according to the largest study ever to compare two such treatments for the life-threatening eating disorder.
The findings, from a multisite study led by researchers at the Stanford University School of Medicine, add to a growing body of evidence supporting the value of parents' involvement in anorexia treatment.