Electrophysiological Examination of Embodiment in Vision and Action
Electrophysiological Examination of Embodiment in Vision and Action
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DOI：
10.1177/0956797611429578
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发表时间：
2012-02-01
影响因子：
8.2
通讯作者：
Ellis, Rob
中科院分区：
文献类型：
--
作者：
Goslin, Jeremy;Dixon, Thomas;Ellis, Rob
大量的行为数据表明，物体的视觉特性会自动增强与它们相关联的运动动作，但这些提供在视觉处理中的嵌入程度有多深？在本文报道的研究中，我们使用电生理学方法检测了常见物体的手柄向左或向右的方向所引起的启示的时间进程。参与者被要求使用左手或右手运动反应对这些物体进行分类。偏侧准备电位显示手部快速运动准备，仅在刺激呈现后100-200ms，实际反应前400ms，与物体提供的承受能力一致。对事件相关电位的检测也显示了手柄方向和反应手一致性对视觉P1和N1成分的影响。这两个结果都表明，早期感觉通路中的活动受到物体的动作关联和观察者的意图的调节。
A wealth of behavioral data has shown that the visual properties of objects automatically potentiate motor actions linked with them, but how deeply are these affordances embedded in visual processing? In the study reported here, we used electrophysiological measures to examine the time course of affordance resulting from the leftward or rightward orientation of the handles of common objects. Participants were asked to categorize those objects using a left-or right-handed motor response. Lateralized readiness potentials showed rapid motor preparation in the hand congruent with the affordance provided by the object only 100 to 200 ms after stimulus presentation and up to 400 ms before the actual response. Examination of event-related potentials also revealed an effect of handle orientation and response-hand congruency on the visual P1 and N1 components. Both of these results suggest that activity in the early sensory pathways is modulated by the action associations of objects and the intentions of the viewer.