PSYC 188 Lecture Notes - Lecture 13: Tourette Syndrome, Premotor Cortex, Basal Ganglia
Document Summary
Tourette syndrome : sensations, both verbal and motor impulses and urges. Before they will scream something, they will feel premonitory urges (makes it similar to. Multiple motor tic and at least one vocal tic at some time. Onset at less than 18 yrs of age (very rare to see onset later in life) Tics may wax and wane but often occur many times per day, nearly every day for a year. Eye blink, head jerk, flick finger, twitch of a limb, shoulder shrug. Pulling on a shirt, tapping sequence, unusual movement of legs, lip licking, hair pulling, hand licking. Short sentence, vulgarity (rare - 10%), phrases, words. Stress is a trigger for tics in tourette"s syndrome ( cbt used to give skills to cope to stressful events) Tourettes is highly heritable, so is it"s severity. Reduced basal ganglia volumes found in tourettes patients! Hypoactivity of the pfc and striatum, hyperactivity of premotor cortex.
