Worringham C J, Stelmach G E
Department of Kinesiology, University of Michigan, Ann Arbor 48109-2214.
J Neurol Neurosurg Psychiatry. 1990 Aug;53(8):702-4. doi: 10.1136/jnnp.53.8.702.
The effects of practice on the simple and choice reaction times (RTs) of Parkinson's disease (PD) and control subjects in a discrete aiming task were analysed. For controls, practice led to a selective decrease in choice RTs, as has been reported previously. An opposite effect was seen in the PD group, with little change in choice RTs and substantial reduction in simple RTs. The results suggest that PD subjects can use advance information to initiate discrete movements more rapidly, but that this ability to "preprogramme" movements requires practice. Reconciliation of these results with studies reporting an inability to preprogramme in PD are made in a discussion of task characteristics which may allow or preclude preprogramming.
分析了练习对帕金森病（PD）患者和对照受试者在离散瞄准任务中的简单反应时间和选择反应时间（RTs）的影响。对于对照组，练习导致选择反应时间选择性降低，如先前报道的那样。在PD组中观察到相反的效果，选择反应时间变化不大，而简单反应时间大幅减少。结果表明，PD患者可以利用提前信息更快地启动离散运动，但这种“预编程”运动的能力需要练习。在讨论可能允许或排除预编程的任务特征时，将这些结果与报道PD患者无法进行预编程的研究进行了协调。
