something cool I read

"Since 1908, scientists have known of a physical manifestation of the disease that seems to afflict not only schizophrenics but also their relatives. When patients try to watch a slowly swinging pendulum, their eyes cannot track the smooth motion. Ordinarily, the eye is a remarkably smart instrument. A healthy person's eyes stay locked onto moving targets without the least conscious thought; Moving images stay frozen in place on the retina. But a schizophrenic's eyes jump about disruptively in small increments, overshooting or undershooting the target and creating a constant haze of extraneous movements. No one knows why."