Probing links between action perception and action production in Parkinson's disease using Fitts' law
Probing links between action perception and action production in Parkinson's disease using Fitts' law
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DOI：
10.1016/j.neuropsychologia.2018.02.001
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发表时间：
2018-03-01
期刊：
影响因子：
2.6
通讯作者：
Hirai, Masahiro
中科院分区：
文献类型：
--
作者：
Sakurada, Takeshi;Knoblich, Guenther;Hirai, Masahiro
关于皮层下大脑如何编码执行动作或评估他人行为所需的信息的信息仍然很少。为了澄清这种联系，我们在帕金森病 (PD) 患者中测试了感知和执行的菲茨定律任务。对于感知任务，参与者会看到一个人在两个相同目标之间移动手臂的明显运动显示，并报告他们是否判断该人能够以感知的速度实际移动而不会错过目标。对于运动任务，参与者被要求尽可能快速、准确地触摸两个目标，类似于感知任务中观察到的人。在这两项任务中，PD 组的表现（或归因于其他任务）明显慢于对照组。然而，在两组中，感知和执行与任务难度的关系正是菲茨定律所预测的。这表明，尽管皮层下区域功能障碍，但运动模拟能力反映了 PD 组的补偿机制。此外，我们发现帕金森病患者在被要求时很难改变估计他人行为的策略。
Information on how the subcortical brain encodes information required to execute actions or to evaluate others' actions remains scanty. To clarify this link, Fitts'-law tasks for perception and execution were tested in patients with Parkinson's disease (PD). For the perception task, participants were shown apparent motion displays of a person moving their arm between two identical targets and reported whether they judged that the person could realistically move at the perceived speed without missing the targets. For the motor task, participants were required to touch the two targets as quickly and accurately as possible, similarly to the person observed in the perception task. In both tasks, the PD group exhibited, or imputed to others, significantly slower performances than those of the control group. However, in both groups, the relationships of perception and execution with task difficulty were exactly those predicted by Fitts' law. This suggests that despite dysfunction of the subcortical region, motor simulation abilities reflected mechanisms of compensation in the PD group. Moreover, we found that patients with PD had difficulty in switching their strategy for estimating others' actions when asked to do so.