SciShow delivers the latest in science news, including how fist-fighting fueled the evolution of the human face, new insights into the origin of schizophrenic "voices," and new research into the bird flu.

In general when we hear that someone is hearing voices, we believe that the person is experiencing a psychotic episode. Psychosis is a break from reality and not knowing what’s real and not real. Usually hearing voices, also...

Narcolepsy (Sleep Disorder) | Causes, Pathophysiology, Signs & Symptoms, Diagnosis, Treatment



Narcolepsy is a chronic sleep disorder affecting rapid eye movement (REM) sleep. There are two types of Narcolepsy, Types 1...