The angular gyrus computes action awareness representations
The angular gyrus computes action awareness representations
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DOI：
10.1093/cercor/bhm050
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发表时间：
2008-02-01
期刊：
影响因子：
3.7
通讯作者：
Grafton, Scott T.
中科院分区：
文献类型：
--
作者：
Farrer, Chloee;Frey, Scott H.;Grafton, Scott T.
研究了右顶下区在行动意识中的参与情况，同时考虑到一个人自己行动的意识体验的差异；特别是，对预期行动与运动后果一致的认识以及对行动作者身份的认识（即代理感）。我们假设这些体验都与下顶叶皮层，特别是直角回（Ag）中实施的过程有关。两项与血氧水平相关的功能磁共振成像研究采用了一种新颖的延迟视觉反馈技术来区分这两种形式的动作意识的神经相关性。我们表明，正确的 Ag 与对预期结果和运动结果之间差异的认识以及对行动作者身份的认识相关。我们认为该区域涉及运动控制的高阶方面，使人能够有意识地访问自己行为的不同方面。具体来说，该区域处理预期动作和运动结果之间的差异，以便受试者有意识地检测到这些差异。这种联合处理是人们用来解释行为的各种经验的核心。
Involvement of the right inferior parietal area in action awareness was investigated while taking into account differences in the conscious experiences of one's own actions; especially, the awareness that an intended action is consistent with movement consequences and the awareness of the authorship of the action (i.e., the sense of agency). We hypothesized that these experiences are both associated with processes implemented in inferior parietal cortex, specifically, right angular gyrus (Ag). Two blood-oxygenation-level-dependent functional magnetic resonance imaging studies employed a novel delayed visual feedback technique to distinguish the neural correlates of these 2 forms of action awareness. We showed that right Ag is associated with both awareness of discrepancy between intended and movement consequences and awareness of action authorship. We propose that this region is involved in higher-order aspects of motor control that allows one to consciously access different aspects of one's own actions. Specifically, this region processes discrepancies between intended action and movement consequences in such a way that these will be consciously detected by the subject. This joint processing is at the core of the various experiences one uses to interpret an action.