The biological roots of Tourette disorder occur in the basal ganglia, structures deep in the brain involved in the control of ...

The symptoms then become bilateral. In the final stage ... there are changes in the brain structure of the so-called basal ganglia—areas of the brain associated with automatic movement.

For decades, most neuroscientists thought that one area of the brain, the basal ganglia, was responsible for action selection and another area, the motor cortex, for action specification. Now, using a ...