Action intentions modulate visual processing during action perception
Action intentions modulate visual processing during action perception
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DOI：
10.1016/j.neuropsychologia.2011.04.004
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发表时间：
2011-06-01
期刊：
影响因子：
2.6
通讯作者：
Cunnington, Ross
中科院分区：
文献类型：
--
作者：
Bortoletto, Marta;Mattingley, Jason B.;Cunnington, Ross
当前关于动作理解和识别机制的争论重新开启了感知系统和运动系统如何联系的问题。有人提出，人类运动系统在动作知觉中发挥作用;然而，仍然没有直接证据表明动作可以调节与有意义动作知觉相关的早期神经过程。在这里，我们表明，计划的行动调制的感知处理观察到的行动在200毫秒内的刺激发作。我们研究了事件相关电位图像的手势，而参与者计划匹配（一致）或不匹配（不一致）的手势。当参与者同时计划一致与不一致的动作时，代表手势视觉处理的N170/VPP可靠地改变。在第二个实验中，我们发现，这种一致性效应是特定的行动计划，而不是更一般的语义方面的行动表示。我们的研究结果表明，通过运动系统编码的动作对视觉处理有直接影响，因此意味着人脑中动作和感知之间存在双向联系。我们建议，通过正向建模，预期的行动可以促进编码的感官输入，将预期作为行动的结果。(C)2011爱思唯尔有限公司保留所有权利。
The current debate on mechanisms of action understanding and recognition has re-opened the question of how perceptual and motor systems are linked. It has been proposed that the human motor system has a role in action perception; however, there is still no direct evidence that actions can modulate early neural processes associated with perception of meaningful actions. Here we show that plans for action modulate the perceptual processing of observed actions within 200 ms of stimulus onset. We examined event-related potentials to images of hand gestures presented while participants planned either a matching (congruent) or non-matching (incongruent) gesture. The N170/VPP, representing visual processing of hand gestures, was reliably altered when participants concurrently planned congruent versus incongruent actions. In a second experiment, we showed that this congruency effect was specific to action planning and not to more general semantic aspects of action representation. Our findings demonstrate that actions encoded via the motor system have a direct effect on visual processing, and thus imply a bi-directional link between action and perception in the human brain. We suggest that through forward modelling, intended actions can facilitate the encoding of sensory inputs that would be expected as a consequence of the action. (C) 2011 Elsevier Ltd. All rights reserved.