Brown R G, Jahanshahi M
MRC Human Movement and Balance Unit, Institute of Neurology, University College, London.
J Neurol Neurosurg Psychiatry. 1998 Jun;64(6):813-6. doi: 10.1136/jnnp.64.6.813.
In both clinical and laboratory tests, patients with Parkinson's disease have considerable difficulty in performing different manual tasks simultaneously with the two hands. The present study reports on an unusual enhancement in performance under such conditions in a substantial proportion of patients tested. When performed at the same time as repetitive tapping tasks, the ability to rapidly place pegs in holes improved in almost half of the patients compared with unimanual performance of the peg task. Various possible explanations are considered for this unusual finding. The two most plausible, and testable, relate to either the withdrawal of attention from the task permitting a more automatic mode of execution, or a facilitation provided by sensory feedback from the simultaneous tapping task.
在临床和实验室测试中，帕金森病患者在使用双手同时执行不同的手动任务时存在相当大的困难。本研究报告了在这种情况下，相当一部分接受测试的患者表现出不同寻常的能力增强。当与重复性敲击任务同时进行时，与单手执行插栓任务相比，几乎一半的患者将插栓快速放入孔中的能力有所提高。针对这一不同寻常的发现，考虑了各种可能的解释。两种最合理且可检验的解释，要么是注意力从任务中撤离，从而允许更自动的执行模式，要么是同时进行的敲击任务提供的感觉反馈起到了促进作用。
