The involvement of cognitive processing in a perceptual-motor process examined with EEG time-frequency analysis
The involvement of cognitive processing in a perceptual-motor process examined with EEG time-frequency analysis
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DOI：
10.1016/j.clinph.2008.11.024
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发表时间：
2009-03-01
影响因子：
4.7
通讯作者：
Imanaka, K.
中科院分区：
文献类型：
--
作者：
Katsumata, H.;Suzuki, K.;Imanaka, K.
目的：对于运动活动，视觉信息对于组织与给定情境相关的运动至关重要。本研究探讨了认知信息加工与视觉加工的关系。方法：采用事件相关同步化（ERS）和事件相关去同步化（ERD）的方法，研究了两种知觉-运动任务的脑动力学过程。结果：根据任务执行中的孔径大小，两种任务都受到物体大小的影响，并产生Ebbinghaus错觉。α-ERD模式与运动执行，似乎是相同的，在这两个任务，而γ-ERS出现只为抓motion.Conclusions：这些结果表明，认知加工不仅参与了匹配任务，但也在抓任务。这些ERD/ERS模式被认为反映了两种任务之间知觉运动过程的相似性和差异性。重要性：对ERD/ERS的分析可以提供与认知加工有关的视觉加工的定性特征。(C)2008年国际临床神经生理学联合会。由爱思唯尔爱尔兰有限公司出版。保留所有战斗。
Objective: For motor activities, visual information is crucial for organizing a movement with respect to a given Situation. The present study investigates how cognitive information processing is associated with this visuomotor process.Methods: Brain dynamics in executing two perceptual-motor tasks were examined in terms of event-related synchronization (ERS) and event-related desynchronization (ERD) of EEG. Those tasks were (1) reaching toward and grasping a visual object with a pinch grip, and (2) matching the pinch grip size with respect to the perceived object size.Results: According to the aperture size in the task execution, both the tasks were affected by the perceived object size inducing the Ebbinghaus illusion. The alpha-ERD patterns were associated with the movement execution and appeared to be identical in both the tasks, whilst the gamma-ERS appeared only for the grasping motion.Conclusions: These results suggest that cognitive processing was involved not only in the matching task but also in the grasping task. These ERD/ERS patterns are thought to reflect the similarity and difference in the perceptual-motor Processes between the two tasks. Significance: The analysis of ERD/ERS can provide insight on the qualitative feature in a visuomotor process associated with the involvement of cognitive processing. (C) 2008 International Federation of Clinical Neurophysiology. Published by Elsevier Ireland Ltd. All Fights reserved.