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##Additional reference sources  ### Reviews  David Shprecher and colleagues recently published a thoughtful, forward-looking, but concise review of Tourette research and treatment \citep{26645901}. \citet{26440120} describe how increased motor control occurs in TS adolescents along with a variety of compensatory mechanisms. These researchers make the case that increased inhibitory capacity within higher-order motor regions, such as the SMA, may adjust motor excitability.  Mary Robertson \citep{26359614,26359615,26360067,26360068} reviews work that she and colleagues have done during her 35-year career treating TS patients and her 30 years of publishing TS research. A detailed review of the role of the autonomic nervous system in TS describes the autonomic abnormalities associated with TS and treatment approaches based on improving autonomic modulation \citep{26074752}. Another review article summarizes some of the recent advances in TS neuroimaging \citep{26543796}.