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An investigation on the association of cognitive information processing within the process of perceptual-motor process by analyzing the cortical root of perceptual information transmission

通过分析知觉信息传递的皮层根源，研究知觉-运动过程中认知信息处理的关联

基本信息

批准号：
18500452
负责人：
KATSUMATA Hiromu
金额：
$ 2.43万
依托单位：
Daito Bunka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18500452/
关键词：
Brain function Motor control Perceptual-motor process 運動制卸知覚-運動制御連関

项目摘要

For understanding the mechanism of achieving a given motor task goal, it is critical to know how perceptual information plays a role in the process of organizing a movement. The present study investigated two perceptual-motor tasks: 1) reaching to a visual target and grasping it with a pinch grip, and 2) estimating the size of the visual target and producing the estimated size with the aperture of a pinch grip. These task movements were produced with respect to a simple circular object as well as to the same circular object surrounded by other five circles, which induces the Ebbinghaus illusion, and thereby the association of cognitive information processing with the visuo-motor organization process was examined. To this end, EEG was used to analyze the cortical activation pattern during the task execution. Ten participants volunteered and performed the reaching-grasping and the matching tasks, and their cortical activities were recoded by a 64-channel EEG recording system together wit … More h the joint excursions of the pinch grip motion by a Goniometer. The frequency domain of EEG was analyzed in terms of event-related synchronization or desynchronization (ERS/ERD), which are regarded as the cortical excitation and deactivation/inhibition respectively. For both of the two perceptual-motor tasks, the same 'finger joint motion was produced with respect t to the same visual stimulus of the target object. This was reflected by ERS observed in the cortical sites (the visual area and the somatosensory-motor areas), which associate with processing visual information and producing movements. Furthermore, ERS in the occipito-parietal area was observed in the reaching-grasping task. According to the hypothesis of the two visual streams, the dorsal and the ventral streams, cognitive information processing about estimating the size of the target object was involved in the execution of the matching task as opposed to the reaching-grasping task. Therefore the ERS in the reaching-grasping task imply the cortical process of inhibiting information processing associated with the cognitive activity. The findings in the present study was reported at the international conference in the field of motor control in Santos, Brazil, held in August, 2007, and the paper was submitted to an international journal on studies on motor control and EEG. Less

为了理解实现给定运动任务目标的机制，了解知觉信息在组织运动过程中的作用是至关重要的。本研究考察了两个知觉-运动任务：1）到达视觉目标并用捏握抓握; 2）估计视觉目标的大小并用捏握的孔径产生估计的大小。这些任务运动是相对于一个简单的圆形物体以及相同的圆形物体周围的其他五个圆圈，诱导艾宾浩斯错觉，从而研究认知信息加工与视觉运动组织过程的关联。为此，EEG被用来分析在任务执行过程中的皮层激活模式。10名受试者自愿完成伸手-抓握和匹配任务，他们的大脑皮层活动由64通道脑电记录系统记录， ...更多信息用测角仪测量捏夹运动的关节偏移。将事件相关同步化或去同步化（ERS/ERD）分别视为皮层兴奋和失活/抑制，对脑电频域进行分析。对于这两个知觉运动任务，相同的手指关节运动产生相对于目标物体的相同的视觉刺激。这反映在皮层部位（视觉区和躯体感觉运动区）的ERS上，这些部位与处理视觉信息和产生运动有关。此外，在到达-抓握任务中观察到枕顶区的ERS。根据背侧和腹侧两条视觉流的假设，与到达-抓取任务相比，匹配任务的执行涉及估计目标物体大小的认知信息加工。因此，到达-抓握任务中的ERS暗示了皮层抑制与认知活动相关的信息加工的过程。本研究的结果在2007年8月在巴西桑托斯举行的运动控制领域的国际会议上进行了报告，并将论文提交给了一份关于运动控制和EEG研究的国际期刊。少