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Bradykinesia in Parkinson's disease and cocontraction activity in dystonia are unlikely to be due to adaptive changes in the CNS

Published online by Cambridge University Press:  04 February 2010

A. Berardelli ,
R. Agostino ,
A. Currà  and
M. Manfredi
A. Berardelli
Affiliation:
Department of Neurological Sciences, University of Rome “La Sapienza”00185 Roma, Italy. Alfredo@itcaspur.caspur.it
R. Agostino
Affiliation:
Department of Neurological Sciences, University of Rome “La Sapienza”00185 Roma, Italy. Alfredo@itcaspur.caspur.it
A. Currà
Affiliation:
Department of Neurological Sciences, University of Rome “La Sapienza”00185 Roma, Italy. Alfredo@itcaspur.caspur.it
M. Manfredi
Affiliation:
Department of Neurological Sciences, University of Rome “La Sapienza”00185 Roma, Italy. Alfredo@itcaspur.caspur.it
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Abstract

Latash & Anson's explanation of bradykinesia in patients with Parkinson's disease and cocontraction in dystonic patients is intriguing. However, the proposed adaptive changes in the central nervous system do not fit well with both clinical and experimental evidence of motor impairment in these patients. In particular, we question the explanation of: (1) the role of postural reactions and spatial accuracy in bradykinesia, (2) certain abnormalities during the execution of sequential and simultaneous movements, (3) the sudden changes in mobility (ON and OFF) of Parkinsonian patients, and (4) the meaning of reflex circuitry changes in dystonia.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 19 , Issue 1 , March 1996 , pp. 69
Copyright
Copyright © Cambridge University Press 1996

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