An event-related brain potential study of cross-modal links in spatial attention between vision and touch
An event-related brain potential study of cross-modal links in spatial attention between vision and touch
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DOI：
10.1111/1469-8986.3750697
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发表时间：
2000-09-01
期刊：
影响因子：
3.7
通讯作者：
Driver, J
中科院分区：
文献类型：
--
作者：
Eimer, M;Driver, J
事件相关电位（ERP）证据的存在跨通道的联系，在内源性空间注意之间的视觉和触觉的实验中，参与者必须检测触觉或视觉目标的出席方，并忽略无关的方式和刺激的无人值守的一面。对于视觉ERP，枕P1和N1组件的注意力调制时，注意力都指向视觉和触摸，这表明在空间注意力从触摸到视觉的链接可以影响视觉处理的早期阶段。对于体感ERP，注意负性开始约140毫秒poststimulus存在于中线和横向中央电极触摸时，相关的。没有注意的体感ERP调制时，视觉是相关的，触觉刺激可以完全忽略。然而，在另一个任务条件下，反应也需要罕见的触觉目标，无论其位置，视觉空间注意调制体感ERPs。与视觉不同，触摸显然可以在另一种模态中与注意力定向脱钩，除非它可能相关。
Event-related potential (ERP) evidence for the existence of cross-modal links in endogenous spatial attention between vision and touch was obtained in an experiment where participants had to detect tactile or visual targets on the attended side and to ignore the irrelevant modality and stimuli on the unattended side. For visual ERPs, attentional modulations of occipital P1 and N1 components were present when attention was directed both within vision and within touch, indicating that links in spatial attention from touch to vision can affect early stages of visual processing. For somatosensory ERPs, attentional negativities starting around 140 ms poststimulus were present at midline and lateral central electrodes when touch was relevant. No attentional somatosensory ERP modulations were present when vision was relevant and tactile stimuli could be entirely ignored. However, in another task condition where responses were also required to infrequent tactile targets regardless of their location, visual-spatial attention modulated somatosensory ERPs. Unlike vision, touch apparently can be decoupled from attentional orienting within another modality unless it is potentially relevant.