Journal
BRAIN RESEARCH
Volume 1115, Issue -, Pages 213-216Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.brainres.2006.07.066
Keywords
rapid movement; laser; pronation; supination; voluntary movement; range; movement disorder; motor control; tremor
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We compared the level of bradykinesia during rapid alternating movements (RAM) in patients with essential tremor (ET) with that of patients with Parkinson's disease (PD) having either the tremor dominant or akinetic-rigid form of PD; and 10 healthy controls. We found an increase of pronation-supination cycle duration in the PD and ET group, suggestive of bradykinesia. RAM range was, however, similar between groups. The akinetic-rigid group showed a distinct increase in RAM amplitude fluctuation, suggesting that rigidity modified the characteristics of the observed bradykinesia. In conclusion, slow movements should then be considered as part of the ET symptomatology. (c) 2006 Elsevier B.V. All rights reserved.
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