Dysfunctions of the basal ganglia-cerebellar-thalamo-cortical system produce motor tics in Tourette syndrome
Fig 10
Activity of the three units of primary motor cortex.
Data recorded in the case of (a) tic and (b) no-tic. In the case of a tic, the noise signal conveyed by one channel wins the competition and causes a strong activation of the related cortical unit, whereas all cortical units remain silent in the case of no-tic.