The parietal role in the sense of self-ownership with temporal discrepancy between visual and proprioceptive feedbacks
The parietal role in the sense of self-ownership with temporal discrepancy between visual and proprioceptive feedbacks
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DOI：
10.1016/j.neuroimage.2004.10.039
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发表时间：
2005-02-15
期刊：
影响因子：
5.7
通讯作者：
Oda, I
中科院分区：
文献类型：
--
作者：
Shimada, S;Hiraki, K;Oda, I
关于我们如何识别图像的一个假设，例如，手臂是我们自己的，是通过多个感官反馈的共同出现，特别是视觉和本体感受反馈，在这个过程中。有人认为，顶叶是一个区域的本体感受和视觉信息的自己的身体是一体化的。本研究探讨顶叶皮质在视觉本体感受同步判断任务中的活动，其中受试者自己的被动移动的手的视觉反馈被延迟。被试需要判断本体感觉和视觉反馈之间是否存在延迟。使用48通道近红外光谱（NIRS）装置测量的顶叶皮质活动似乎受到视觉和本体感受反馈之间延迟长度的调节。双侧上级/中顶叶区参与了视觉和本体感觉反馈之间的同步性体验，而当检测到两种反馈之间的不一致时，右侧顶叶下区被强烈激活。我们假设顶叶的上级部分是必不可少的，以维持自己的身体形象，而右下部分参与检测他人的运动。(C)2004爱思唯尔公司All rights reserved.
One hypothesis on how we recognize an image of, for example, an arm as our own is through the co-occurrence of multiple sensory feedbacks, especially visual and proprioceptive feedbacks, in this process. It has been suggested that the parietal lobe is the region where proprioceptive and visual information of one's own body is integrated. This study investigated parietal cortical activity during a visual-proprioceptive synchrony judgment task in which visual feedback of the subjects' own passively moving hand was delayed. The subjects were required to judge whether or not there was a delay between the proprioceptive and visual feedbacks. Parietal cortical activity, which was measured using a 48-channel near-infrared spectroscopy (NIRS) apparatus, appeared to be modulated by the length of the delay between the visual and proprioceptive feedbacks. The bilateral superior/middle parietal areas were involved in experiencing the synchrony between the visual and proprioceptive feedbacks, whereas the right inferior parietal areas were strongly activated when discrepancy between the two feedbacks was detected. We postulate that the superior portion of the parietal lobe is essential for maintaining one's own body image, while the right inferior portion is involved in detecting movements of others. (C) 2004 Elsevier Inc. All rights reserved.