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Study is first to confirm that activity in ventral tegmental area of primate brain affects behavior

Artificially stimulating a brain region believed to play a key role in learning, reward and motivation induced monkeys to change which of two images they choose to look at.

Leptin also influences brain cells that control appetite, researchers find

Twenty years after the hormone leptin was found to regulate metabolism, appetite, and weight through brain cells called neurons, researchers have found that the hormone also acts on other types of cells to control appetite. Leptin, a naturally occurrin…

How to erase a memory –- and restore it: Researchers reactivate memories in rats

Researchers have erased and reactivated memories in rats, profoundly altering the animals’ reaction to past events. The study is the first to show the ability to selectively remove a memory and predictably reactivate it by stimulating nerves in the b…

Enzyme used in antidepressants could help researchers develop prostate cancer treatments

An enzyme commonly used as a target for antidepressants may also promote prostate cancer growth, an international team of scientists report. The study found that suppressing the enzyme monoamine oxidase A, or MAOA, may reduce or even eliminate prostate…

Allowing patients to choose their PTSD treatment is cost-effective

A cost-analysis of post-traumatic stress disorder treatments shows that letting patients choose their course of treatment – either psychotherapy or medication – is less expensive than assigning a…

Level of addiction to tobacco measured by new virtual platform

In Mexico, 21.7 percent of the population smokes, which is associated with 95 percent of (lung cancer cases and the development of 29 more different conditions. A citizen science project titled “Are you smoking away?” is part of the venture “Science t…

Hypertension risk in older women increased by negative social interactions

Keeping your friends close and your enemies closer may not be the best advice if you are 50 or older.

Narcissists can feel empathy, research finds

Narcissists tend to lack empathy, which can cause problems for themselves, the people around them and society in general.

People with diverse compulsion disorders have similar decision and brain patterns

People with compulsion disorders seem to have decision patterns that favor habits rather than goals and fewer brain cells in regions that keep track of goals and rewards.

Link between social networks and better health for older adults

Having regular positive interactions with family and friends and being involved in several different social networks can help older adults be healthier, according to new research published by the…