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ADHD drugs increase brain glutamate, predict positive emotion in healthy people

New findings offer clues about how misused drugs affect healthy brains and hint at an undiscovered link between glutamate and mood.

Thyroid gene variation may increase risk for Alzheimer’s disease in African Americans

African Americans with a common genetic variation are at increased risk for developing Alzheimer’s disease, while European Americans with the same variation are not, according to a new study.

Men and women have opposite genetic alterations in depression

Men and women with major depressive disorder (MDD) have opposite changes in the expression of the same genes, according to a new postmortem brain study. The findings indicate distinct pathology, and suggest that men and women may need different types o…

Emotional suppression reduces memory of negative events

By peering at the brains of study subjects prompted to suppress negative emotions, scientists have gained new insights into how emotional regulation influences negative feelings and memories. The researchers hope the findings will lead to new methods t…

How would the brain process alien music?

What might alien music sound like? Would it be structured hierarchically as our music is with verses and a chorus? Would we even be able to appreciate it? Researchers think the answer would be yes, assuming it was predicated on local and non-local depe…

Sleep apnea study finds male-female differences in cerebral cortex thickness, symptoms

Researchers examined clinical records and magnetic resonance imaging brain scans of patients who were recently diagnosed with sleep apnea, and discovered several apparent connections between thinning of the brain’s cerebral cortex and apnea symptoms.

Brain is less flexible than we thought when learning

Nobody really knows how the activity in your brain reorganizes as you learn new tasks, but new research reveals that the brain has various mechanisms and constraints by which it reorganizes its neural activity when learning over the course of a few hou…

Worldwide study triples number of known genetic risk factors for stroke

The largest genetic study of stroke to date triples the number of known genetic risk factors for the disease and also should enable researchers to find novel treatments for dementia.

Can pursuing happiness make you unhappy?

Researchers have found that people who pursue happiness often feel like they do not have enough time in the day, and this paradoxically makes them feel unhappy.

Caloric restriction in combination with low-fat diet helps protect aging mouse brains

New research finds that a low-fat diet in combination with limited caloric consumption prevents aging-induced inflammatory activation of immune cells in the mouse brain – and that exercise is significantly less effective than caloric restriction in pre…