Increased response to visual feedback of drug-induced dyskinetic movements in advanced Parkinson's disease

被引:13
|
作者
Liu, XG
Österbauer, R
Aziz, TZ
Miall, RC
Stein, JF
机构
[1] Univ Oxford, Physiol Lab, Oxford OX1 3PT, England
[2] Radcliffe Infirm, Dept Neurosurg, Oxford OX2 6HE, England
基金
英国医学研究理事会; 英国惠康基金;
关键词
visual feedback; tracking; drug-induced dyskinesia; Parkinson's disease;
D O I
10.1016/S0304-3940(01)01740-2
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
To investigate the response to visual feedback of involuntary movements which have a frequency composition similar to cerebellar tremor but are not caused by cerebellar damage, we have tested six advanced Parkinson's disease (PD) patients with drug-induced dyskinetic movements using visually guided wrist tracking tasks. Tracking performance was assessed under three visual conditions: (1) both guiding target and movement cursor were displayed continuously; (2) the target display was turned off for the second half of each trial; or (3) the cursor display, but not the target, was turned off for the second half of each trial. The response to visual feedback of drug-induced dyskinetic movements at 1-5 Hz in these advanced PD patients were significantly increased than in normal controls. This suggests that increased response to visual feedback might be a common feature of low frequency involuntary movements and not directly caused by cerebellar damages. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
引用
收藏
页码:25 / 28
页数:4
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