Going on antidepressants can give many people their life back, but for some there is a catch. About 25% to 80% of people who take antidepressants experience sexual side effects to some degree during ...

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

For the first time, a study shows an online assessment can provide a scientific measure of acetylcholine – a key brain chemical, which declines progressively with cognitive aging and even more quickly ...

Over the last decades, research has proven that aging isn’t just about our years in birthdays. Instead, we may be better served by knowing how organs and cells have handled those years. This powerful ...

Scientists at Northern Arizona University are developing a promising new way to detect Alzheimer’s disease earlier than ever before—by tracking how the brain uses sugar. Using tiny particles in the ...

BOSTON — A simple, quick test performed with a pupillometer appears to be an effective screening tool for acute mild traumatic brain injury, US Army investigators report. "We have identified ...

The stress hormone cortisol disrupts the brain's navigational system. It impairs the function of the grid cells that play a ...