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Brain scan reveals cognitive deficits in older ‘cognitively normal’ HIV+ individuals

Although a group of HIV+ older individuals scored ‘cognitively normal’ in standard neuropsychology testing, a scan of their brains tells a different story, report neuroscientists following a small study.

Scientists turn tastes on and off by activating and silencing clusters of brain cells

Most people probably think that we perceive the five basic tastes — sweet, sour, salty, bitter and umami (savory)–with our tongue, which then sends signals to our brain ‘telling’ us what we’ve tasted. However, scientists have turned this idea on its …

College studies may reduce risk of dementia for older adults, research finds

Older adults who take college courses may increase their cognitive capacity and possibly reduce their risk for developing Alzheimer’s disease or other forms of dementia, according to new research.

Couples who have sex weekly are happiest

More sex may not always make you happier, according to new research published by the Society for Personality and Social Psychology.

Bright light treatment efficacious for nonseasonal major depressive disorder

Bright light treatment either alone or combined with an antidepressant was an effective and well tolerated treatment for adults with nonseasonal major depressive disorder (MDD) in a randomized…

Male hormone testosterone cause of sex differences in parkinson’s disease risk, study suggests

Men are twice as likely as women to develop Parkinson’s disease. New research suggests that testosterone enhances the susceptibility of brain cells that control movement to damage from chemical imbalances, explaining the sex differences in the occurr…

Couples who have sex weekly are happiest

Although more frequent sex is associated with greater happiness, this link was no longer significant at a frequency of more than once a week, report researchers in a new report.

Greater stress, depression risk for teens with lots of Facebook friends

Teenagers who have more than 300 friends on social media site Facebook may have higher stress levels, putting them at greater risk for later-life depression, a new study suggests.

IU study: Short winter days trigger aggression hormones differently based on sex

Territorial hamsters reveal biological mechanism behind the difference in male versus female aggression.

New options for treating autism

The operating mechanism of oxytocin, the molecule involved in social behavior, has been researched by a team of European scientists. The results obtained in the research suggest that one of the mechanisms by which oxytocin causes interpersonal relation…