Voluntary inhibitory motor control over involuntary tic movements. 2018

Christos Ganos, and John Rothwell, and Patrick Haggard
Department of Neurology, Charité, University Medicine, Berlin, Germany.

Inhibitory control is crucial for normal adaptive motor behavior. In hyperkinesias, such as tics, disinhibition within the cortico-striato-thalamo-cortical loops is thought to underlie the presence of involuntary movements. Paradoxically, tics are also subject to voluntary inhibitory control. This puzzling clinical observation questions the traditional definition of tics as purely involuntary motor behaviors. Importantly, it suggests novel insights into tic pathophysiology. In this review, we first define voluntary inhibitory tic control and compare it with other notions of tic control from the literature. We then examine the association between voluntary inhibitory tic control with premonitory urges and review evidence linking voluntary tic inhibition to other forms of executive control of action. We discuss the somatotopic selectivity and the neural correlates of voluntary inhibitory tic control. Finally, we provide a scientific framework with regard to the clinical relevance of the study of voluntary inhibitory tic control within the context of the neurodevelopmental disorder of Tourette syndrome. We identify current knowledge gaps that deserve attention in future research. © 2018 International Parkinson and Movement Disorder Society.

UI MeSH Term Description Entries
D007266 Inhibition, Psychological The interference with or prevention of a behavioral or verbal response even though the stimulus for that response is present; in psychoanalysis the unconscious restraining of an instinctual process. Inhibition (Psychology),Inhibition, Psychology,Psychological Inhibition,Inhibitions (Psychology),Inhibitions, Psychological,Inhibitions, Psychology,Psychological Inhibitions,Psychology Inhibition,Psychology Inhibitions
D011597 Psychomotor Performance The coordination of a sensory or ideational (cognitive) process and a motor activity. Perceptual Motor Performance,Sensory Motor Performance,Visual Motor Coordination,Coordination, Visual Motor,Coordinations, Visual Motor,Motor Coordination, Visual,Motor Coordinations, Visual,Motor Performance, Perceptual,Motor Performance, Sensory,Motor Performances, Perceptual,Motor Performances, Sensory,Perceptual Motor Performances,Performance, Perceptual Motor,Performance, Psychomotor,Performance, Sensory Motor,Performances, Perceptual Motor,Performances, Psychomotor,Performances, Sensory Motor,Psychomotor Performances,Sensory Motor Performances,Visual Motor Coordinations
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D020323 Tics Habitual, repeated, rapid contraction of certain muscles, resulting in stereotyped individualized actions that can be voluntarily suppressed for only brief periods. They often involve the face, vocal cords, neck, and less often the extremities. Examples include repetitive throat clearing, vocalizations, sniffing, pursing the lips, and excessive blinking. Tics tend to be aggravated by emotional stress. When frequent they may interfere with speech and INTERPERSONAL RELATIONS. Conditions which feature frequent and prominent tics as a primary manifestation of disease are referred to as TIC DISORDERS. (From Adams et al., Principles of Neurology, 6th ed, pp109-10) Habit Spasm,Tic, Motor,Tic, Vocal,Habit Chorea,Habituation Spasm,Tic,Tic, Gestural,Tic, Transient,Chorea, Habit,Choreas, Habit,Gestural Tic,Gestural Tics,Habit Choreas,Habit Spasms,Habituation Spasms,Motor Tic,Motor Tics,Spasm, Habit,Spasm, Habituation,Spasms, Habit,Spasms, Habituation,Tics, Gestural,Tics, Motor,Tics, Transient,Tics, Vocal,Transient Tic,Transient Tics,Vocal Tic,Vocal Tics
D020820 Dyskinesias Abnormal involuntary movements which primarily affect the extremities, trunk, or jaw that occur as a manifestation of an underlying disease process. Conditions which feature recurrent or persistent episodes of dyskinesia as a primary manifestation of disease may be referred to as dyskinesia syndromes (see MOVEMENT DISORDERS). Dyskinesias are also a relatively common manifestation of BASAL GANGLIA DISEASES. Asterixis,Ballismus,Hemiballismus,Involuntary Movements,Lingual-Facial-Buccal Dyskinesia,Orofacial Dyskinesia,Abnormal Movements,Hemiballism,Linguofacial Dyskinesia,Oral Dyskinesia,Oral-Facial Dyskinesia,Tardive Oral Dyskinesia,Abnormal Movement,Dyskinesia,Dyskinesia, Lingual-Facial-Buccal,Dyskinesia, Linguofacial,Dyskinesia, Oral,Dyskinesia, Oral-Facial,Dyskinesia, Orofacial,Dyskinesias, Lingual-Facial-Buccal,Dyskinesias, Linguofacial,Dyskinesias, Oral,Dyskinesias, Oral-Facial,Dyskinesias, Orofacial,Involuntary Movement,Lingual Facial Buccal Dyskinesia,Lingual-Facial-Buccal Dyskinesias,Linguofacial Dyskinesias,Movement, Abnormal,Movement, Involuntary,Movements, Abnormal,Movements, Involuntary,Oral Dyskinesias,Oral Facial Dyskinesia,Oral-Facial Dyskinesias,Orofacial Dyskinesias,Tardive Oral Dyskinesias

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