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首页> 外文期刊>The European Journal of Neuroscience >Attending to visual or auditory motion affects perception within and across modalities: an event-related potential study.
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Attending to visual or auditory motion affects perception within and across modalities: an event-related potential study.

机译：参加视觉或听觉运动会影响模态内外的感知：一项与事件相关的潜在研究。

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The present event-related potential (ERP) study examined the role of dynamic features in multisensory binding. It was tested whether endogenous attention to the direction of motion affects processing of visual and auditory stimuli within and across modalities. Human participants perceived horizontally moving dot patterns and sounds that were presented either continuously (standards) or briefly interrupted (infrequent deviants). Their task was to detect deviants moving in a particular direction within a primary modality, but to detect all deviants irrespective of their motion direction within the secondary modality. Attending to the direction of visual motion resulted in a broad selection negativity (SN) starting at about 200 ms post-stimulus onset, and attending to the direction of auditory motion resulted in a positive difference wave at 150 ms that was followed by a broad negativity starting at about 200 ms (unimodal effects). Moreover, dot patterns moving in a direction that was attended within audition were detected faster and more accurately than oppositely moving stimuli and elicited a cross-modal SN wave. Corresponding cross-modal behavioural and ERP results were obtained for sounds moving in a direction that was attended within vision. Unimodal and cross-modal ERP attention effects partially differed in their scalp topography. The present study shows that dynamic features (direction of motion) may be used to link input across modalities and demonstrates for the first time that these multisensory interactions take place as early as about 200 ms after stimulus onset.
机译：目前的事件相关电位（ERP）研究检查了动态特征在多感觉结合中的作用。测试了内源性注意运动方向是否影响模态内和模态内视觉和听觉刺激的处理。参与者感觉到水平移动的点模式和声音连续出现（标准）或短暂打断（出现异常）。他们的任务是检测在主要模态内朝特定方向移动的变形者，但检测所有变形者而不论其在次要模态内的运动方向如何。注意视觉运动的方向导致刺激后约200毫秒开始的广泛选择消极（SN），而听觉运动的方向导致150毫秒的正差异波，随后是广泛的消极从大约200毫秒（单峰效应）开始。而且，与在相反方向上移动的刺激相比，在听觉内沿着一个方向移动的点阵模式被更快，更准确地检测到，并引起交叉模式的SN波。对于在视觉范围内参与的声音移动，获得了相应的跨模式行为和ERP结果。单峰和跨峰ERP的注意效果在头皮地形上部分不同。本研究表明，动态特征（运动方向）可用于链接跨模态的输入，并首次证明这些多感觉相互作用最早在刺激发作后约200毫秒发生。

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