The human brain contains about 86 billion neurons. These cells fire electrical signals that help the brain store memories and send information and commands throughout the brain and the nervous system.

At this razor's edge, brains are primed to gain new information, Hengen said. "Brains need to reach criticality to think, remember and learn." Hengen proposed criticality as a unifying theory of brain ...

McGill University researchers have identified a brain function that helps explain why childhood stress raises metabolic health risks for some women later in life. A new study found that variations in ...

A study by University of Massachusetts Amherst finds that using alcohol to cope with stress in early adulthood may lead to lasting brain changes. These effects can impact decision-making and cognitive ...

Researchers have identified a surprising brain pattern that may help explain why people with ADHD often struggle to stay focused. Even while awake, their brains can slip into brief episodes of ...

Recent work has revealed some of the many crucial functions of astrocytes, brain cells that were once thought to play primarily supportive roles for neurons. Astrocytes do handle debris around neurons ...

A new study has found that SuperAgers also grow more neurons than other older adults groups, helping to keep their brains ...

Researchers found that people who consumed virgin olive oil rather than refined olive oil showed improved cognitive function ...

Reaction time reflects brain processing speed; simple tests like the ruler drop can reveal attention, coordination, and early cognitive changes.

Parkinson’s disease is a long-term brain condition that affects how people move. It usually develops slowly and is most ...