Biology Research Project
Definition of Tourette's Syndrome
- blinking rapidly, shoulder shrugging, or head/shoulder jerking
- Simple vocalizations might be repetitive throat clearing, sniffing, or grunting.
Complex motor tics have a distant coordinated patterns of movements involving several muscle groups such as
- facial grimacing along with jerking the shoulders
Some motor tics might actually appear purposeful, like sniffing or touching objects, while some of the more complex vocal tics might even be entire phrases.
Causes of TS
Although the cause of TS is unknown, current research points to abnormalities in certain brain regions (including the basal ganglia, frontal lobes, and cortex), the circuits that interconnect these regions, and the neurotransmitters (dopamine, serotonin, and norepinephrine) responsible for communication among nerve cells. Given the often complex presentation of TS, the cause of the disorder is likely to be equally complex.