Effect before cause: supramodal recalibration of sensorimotor timing.

Effect before cause: supramodal recalibration of sensorimotor timing.
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DOI:
10.1371/journal.pone.0007681
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发表时间:
2009-11-05
期刊:
影响因子:
3.7
通讯作者:
Whitaker D
Whitaker D
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Heron J;Hanson JV;Whitaker D

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我们的运动动作通常会产生感觉事件,但我们如何知道哪些事件是自我产生的,哪些是外部原因造成的?在这里,我们使用时间适应调查的处理阶段和一般性的感觉运动的时间估计。对行动和事件之间人为引起的延迟的适应可以产生一种惊人的感知,在消除延迟后,感觉就好像感觉事件先于其原因行动。这种动作和事件的时间重新校准在感觉模态中以定量相似的方式发生。关键的是,它是鲁棒的替代一个感觉在适应阶段与另一个感觉在测试判断。我们的研究结果表明,一个高层次的,超模态的重新校准机制。一个简单的模型很好地描述了这些影响,该模型试图保持行动和事件之间的预期同步,但只有当因果关系表明这样做是合理的。我们进一步证明,该模型成功地从外部的感觉运动域的相关适应数据的特点。
Our motor actions normally generate sensory events, but how do we know which events were self generated and which have external causes? Here we use temporal adaptation to investigate the processing stage and generality of our sensorimotor timing estimates. Adaptation to artificially-induced delays between action and event can produce a startling percept—upon removal of the delay it feels as if the sensory event precedes its causative action. This temporal recalibration of action and event occurs in a quantitatively similar manner across the sensory modalities. Critically, it is robust to the replacement of one sense during the adaptation phase with another sense during the test judgment. Our findings suggest a high-level, supramodal recalibration mechanism. The effects are well described by a simple model which attempts to preserve the expected synchrony between action and event, but only when causality indicates it is reasonable to do so. We further demonstrate that this model successfully characterises related adaptation data from outside the sensorimotor domain.
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