ERP effects of intermodal attention and cross-modal links in spatial attention
ERP effects of intermodal attention and cross-modal links in spatial attention
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DOI：
10.1017/s004857729897086x
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发表时间：
1998-05-01
期刊：
影响因子：
3.7
通讯作者：
Schröger, E
中科院分区：
文献类型：
--
作者：
Eimer, M;Schröger, E
在两个实验中，研究了通道间注意和空间注意中的跨通道连接对视觉和听觉事件相关电位(ERPs)的影响。在这两个实验中，被试必须注意到一种刺激通道(听觉或视觉)，以对出现在相关位置(由线索指示)的不常见目标做出反应。通道间注意的ERP效应(通过比较视觉和听觉刺激在视觉和听觉刺激相关或不相关时诱发的事件相关电位)在视觉和听觉中的分布是不同的，这表明通道间注意是通过对通道特定区域的选择性调制来运作的。在视觉和听觉的中线电极上，空间注意的ERP效应(通过比较ERPs与线索和非线索位置的刺激来衡量)也是相似的。除了一个值得注意的例外，当注意指向另一种通道时，这些效应也存在，这表明在控制暂时性空间注意的视觉和听觉之间存在跨通道联系。
Effects of intermodal attention AND of cross-modal links in spatial attention on visual and auditory event-related potentials (ERPs) were investigated in two experiments where participants had to attend to one stimulus modality (audition or vision) to respond to infrequently presented targets whenever these were presented at a relevant location (indicated by a cue). The ERP effects of intermodal attention (measured by comparing the ERPs elicited by visual and auditory stimuli when the respective modality was relevant or irrelevant) were differently distributed in vision and audition, suggesting that intermodal attention operates by a selective modulation of modality-specific areas. Similar ERP effects of spatial attention (measured by comparing the ERPs to stimuli at cued and uncued locations) were elicited at midline electrodes in vision and audition. With one notable exception, these effects were also present when attention was directed within the other modality, suggesting the existence of cross-modal links between vision and audition in the control of transient spatial attention.