Single-unit activity of the anterior globus pallidus internus in Tourette patients and posterior globus pallidus internus in Dystonic patients

Dystonia is a movement disorder characterised by involuntary sustained muscle contractions that lead to twisting, repetitive movements and abnormal postures. Two types of Dystonia can be distinguished: Primary Dystonia has no evidence of other pathological abnormalities, and secondary Dystonia which is associated with neurological lesions, either degenerative or traumatic (Albanese et al. 2013). Tourette's Syndrome (TS) is a neuropsychiatric disorder that is chronic and typically characterised by motor and vocal tics.

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