Voluntary Inhibitory Control of Chorea: A Case Series. Issue 3 (20th February 2020)

• Record Type: Journal Article
• Authors: Bonomo, Roberta; Latorre, Anna; Balint, Bettina; Smilowska, Katarzyna; Rocchi, Lorenzo; Rothwell, John C.; Zappia, Mario; Bhatia, Kailash P.
• Is Part Of: Movement disorders clinical practice. Volume 7:Issue 3(2020)
• Page Start: 308
• Page End: 312
• Publication Date: 2020-02-20
• Subjects: chorea -- suppression -- volitional control -- involuntary movements -- EMG; Movement Disorders; Movement disorders -- Periodicals; Movement disorders; Periodicals; Periodicals; 616
• DOI: 10.1002/mdc3.12907
• Languages: English
• ISSNs: 2330-1619

Abstract

ABSTRACT: Background: Volitional control of involuntary movements has so far been considered a hallmark of tic disorders. However, modulation of involuntary movements can also be observed in other hyperkinesias. Cases: Here, we present 6 patients with chorea able to suppress their involuntary movements, on demand. In 3 of them, surface electromyography was used to quantify degree of suppression and confirmed a reduction of muscle activity up to 68%, during volitional control. Conclusion: This observation represents a first step toward a description of a new clinical feature in choreic syndromes and an opportunity to redefine the role of volitional inhibition in hyperkinetic movement disorders. Abstract : View Supplementary Video