One of the most common and least understood neurobiological disorders, Tourette syndrome is an inherited disorder that affects about 200,000 Americans. Males are affected three to four times as often as females.

PET is one of the most important techniques for measuring blood flow or energy consumption in the brain. This method of measuring brain function is based on the detection of radioactivity emitted when positrons, positively charged particles, undergo radioactive decay in the brain.

Our best insights into how the normal brain ages come from long-term studies of the nervous system that began decades ago.

Considered the most common mental illnesses, anxiety disorders affect an estimated 18 percent of the adult population in a given year, or 40 million Americans.

To be able to see anything, eyes first need to process light. Vision begins with light passing through the cornea.

Scientist targeted by animal rights activists asks about the ethics of inaction.

Medical science offers us a number of different ways to dull or treat pain.

Although most of us don’t think of it in this way, the related senses of taste and smell help us interpret the chemical world.

Neuroscientists believe that the brain can remain relatively healthy and full-functioning as it ages.

From remembering a friend's face to figuring out where you left your keys, the act of memory has many dimensions.