Using reaction time and co-contraction to differentiate acquired (secondary) from functional ‘fixed’ dystonia

Notably, the individual data on RT and co-contraction show clear overlap between the two groups. [...]even if these two parameters can be useful to differentiate at a group level, they are not suitable in this form as diagnostic criteria. [...]we did not find a pattern of response that was abnormal...

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Bibliographic Details
Published in:	Journal of neurology, neurosurgery and psychiatry Vol. 86; no. 8; pp. 933 - 934
Main Authors:	Macerollo, A, Batla, A, Kassavetis, P, Parees, I, Bhatia, K P, Edwards, M J
Format:	Journal Article
Language:	English
Published:	England BMJ Publishing Group LTD 01-08-2015 BMJ Publishing Group
Series:	Letter
Subjects:	Diagnosis, Differential Dystonic Disorders - classification Dystonic Disorders - diagnosis Dystonic Disorders - physiopathology Electromyography Humans Laboratories Muscle Contraction - physiology Patients PostScript Posture Reaction Time - physiology Software Variance analysis DYSTONIA EMG
Online Access:	Get full text
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Summary:	Notably, the individual data on RT and co-contraction show clear overlap between the two groups. [...]even if these two parameters can be useful to differentiate at a group level, they are not suitable in this form as diagnostic criteria. [...]we did not find a pattern of response that was abnormal in a different manner to AD (eg, failure to activate the muscles requested), which would have allowed a more positive differentiation of FD from AD.
Bibliography:	SourceType-Other Sources-1 content type line 63 ObjectType-Correspondence-1 AM and AB contributed equally.
ISSN:	0022-3050 1468-330X
DOI:	10.1136/jnnp-2014-309040