Cognitive and motor event-related potentials in Tourette syndrome and tic disorders: a systematic review

Tourette syndrome (TS) is a neurodevelopmental psychiatric disorder involving motor and phonic tics. Tics are conceptualized as involuntary motor contractions or vocalizations (American Psychiatric Association, 2013). These tics can be either simple or complex. Simple motor tics are the most frequent ones, and may take the form or eyeblinks, nose twitches, or head jerks, among others. While simple motor tics only involve one group of muscles, complex motors tics involve multiple groups of muscles in a coordinated sequence.

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