Scripps Research Institute scientists have shown for the first time that the neurotransmitter serotonin uses a specialized signaling pathway to mediate biological functions that are distinct from the signaling pathways used by hallucinogenic substances. The new findings could have a profound effect on the development of new therapies for a number of disorders, including schizophrenia and depression.
Sensation seeking—the urge to do exciting things—has been linked to dopamine, a chemical that carries messages in your brain. For a new study published in Psychological Science, a journal of the Association for Psychological Science, scientists analyzed genes in the dopamine system and found a group of mutations that help predict whether someone is inclined toward sensation seeking.
Using electrodes to stimulate areas deep within the brain may have therapeutic potential for patients with obsessive compulsive disorder that is refractory to treatment, according to a report in the October issue of Archives of General Psychiatry, one of the JAMA/Archives journals.
A new study has determined that female executives are more than twice as likely to leave their jobs – voluntarily and involuntarily – as men. Yet despite systemic evidence that women are more likely to depart from their positions, the researchers did not find strong patterns of discrimination.
Divisive primaries may waste precious campaign resources and damage the primary winner’s reputation and chances to win the general election, according to a study in the current American Politics Research (published by SAGE). The timing of the primary in proximity to the general election can also play a role in the results.
In a recently published study in the journal Addiction, researchers from Bowling Green State University report evidence of an association between father’s incarceration and substantially elevated risks for illegal drug use in adolescence and early adulthood.
About 20 percent of U.S. youth during their lifetime are affected by some type of mental disorder to an extent that they have difficulty functioning, according to a new NIMH survey published in the October 2010 issue of the Journal of the American Academy of Child and Adolescent Psychiatry. The data support the observation from surveys of adults that mental disorders most commonly start in early life.
Healthcare professionals are still not receiving the appropriate training and support they need to help people who self-harm and this can result in negative attitudes and inadequate levels of care.
The consumption of drugs and alcohol by teenagers is not just about rebellion or emotional troubles. It’s about being one of the cool kids, according to a study by led by researchers at the Université de Montréal.
When it comes to intelligence, the whole can indeed be greater than the sum of its parts. A new study co-authored by MIT, Carnegie Mellon University, and Union College researchers documents the existence of collective intelligence among groups of people who cooperate well, showing that such intelligence extends beyond the cognitive abilities of the groups’ individual members.
Taking part in sports is good all round for young teens: physically, socially, and mentally, according to a new study1 by Dr. Keith Zullig and Rebecca White from West Virginia University in the US. Their research shows that middle-school teenagers who are physically active and play on sports teams are more satisfied with their life and feel healthier.
Impulsive behaviour can be improved with training and the improvement is marked by specific brain changes, according to a new Queen’s University study.
Since the first case description in the 19th century, the causes of Tourette syndrome have been a mystery. Now researchers have identified a rare gene mutation responsible for the disorder in one family. The gene is needed for producing histamine, a small molecule with many roles in the body, including signaling in the brain.
When people think of spinal cord injury, they tend to think of paralysis. But a spinal cord injury can also cause debilitating muscle spasms. Although the drug baclofen can control these spasms, many patients cannot tolerate its side effects, which include general sedation and dizziness. A new study sheds light on how a spinal cord injury leads to spasms, and on the promise of more precisely targeted drugs with fewer side effects.
Blood alcohol levels below the current legal limit for driving have a significant negative effect on a person’s dexterity. Researchers writing in the open access journal BMC Research Notes found that just two single vodka and orange drinks were enough to make senior volunteers struggle at an obstacle avoidance test while walking.