Visuo-motor imagery of specific manual actions: a multi-variate pattern analysis fMRI study.
Visuo-motor imagery of specific manual actions: a multi-variate pattern analysis fMRI study.
复制标题
特定手动动作的视觉运动想象：多变量模式分析功能磁共振成像研究。
DOI：
10.1016/j.neuroimage.2012.06.045
复制
发表时间：
2012
期刊：
影响因子：
5.7
通讯作者：
Oosterhof NN
中科院分区：
文献类型：
--
作者：
Oosterhof NN
An important human capacity is the ability to imagine performing an action, and its consequences, without actually executing it. Here we seek neural representations of specific manual actions that are common across visuo-motor performance and imagery. Participants were scanned with fMRI while they performed and observed themselves performing two different manual actions during some trials, and imagined performing and observing themselves performing the same actions during other trials. We used multi-variate pattern analysis to identify areas where representations of specific actions generalize across imagined and performed actions. The left anterior parietal cortex showed this property. In this region, we also found that activity patterns for imagined actions generalize better to performed actions than vice versa, and we provide simulation results that can explain this asymmetry. The present results are the first demonstration of action-specific representations that are similar irrespective of whether actions are actively performed or covertly imagined. Further, they demonstrate concretely how the apparent cross-modal visuo-motor coding of actions identified in studies of a human “mirror neuron system” could, at least partially, reflect imagery.
