brain

A stroke left a man paralyzed and speechless. Now a device that decodes brain signals is letting him generate words and sentences.

After a stroke, people often lose dexterity in one hand. Now, the Food and Drug Administration has authorized a device that can restore function by encouraging the brain to rewire.

By decoding the brain signals involved in handwriting, researchers have allowed a man who is paralyzed to transform his thoughts into words on a computer screen.

The vast majority of headaches are innocuous despite the misery they cause. But here are the red flag signs to watch out for in the rare case a headache points to a bigger issue.

Researchers were able to mimic the mind-altering effects of the drug ketamine by inducing a particular rhythm in one area of the brain.

A neurologist who wanted to know how the brain changes in response to a physical disability put his arm in a pink cast for two weeks to find out.

Neuroscientist Barbara Lipska describes in a new memoir surviving 20 brain tumors, and what the eight-week nightmare of psychological symptoms taught her about mental illnesses she's long studied.

The brains of birds and mice continue to produce new nerve cells in the hippocampus throughout life. But research now suggests the human brain stops doing this around adolescence.

Their first epiphanies came during musings over beer, and evolved into a decade of teamwork. Two Harvard researchers explain why they think Alzheimer's disease may be traced to an immunity glitch.

Technology that uses electrical stimulation to tweak the brain may eventually help people with memory problems caused by a brain injury or Alzheimer's disease.