Exogenous attentional selection of transparent superimposed surfaces modulates early event-related potentials
Exogenous attentional selection of transparent superimposed surfaces modulates early event-related potentials
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DOI：
10.1016/j.visres.2005.04.021
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发表时间：
2005-11-01
期刊：
影响因子：
1.8
通讯作者：
Hillyard, SA
中科院分区：
文献类型：
--
作者：
Khoe, W;Mitchell, JF;Hillyard, SA
使用透明运动范例，[Valdes-Sosa，M.，Bobes，M.一、Rodriguez，V.，& Pinilla，T.（1998年）。在不转移聚光灯的情况下切换注意力，基于对象的脑电位注意力调制，认知神经科学杂志，10，137151; Valdes-Sosa，M.，Cobo，A.，& Pinilla，T.（2000年）的第10/2000号决议。Attention to object files defined by transparent motion，Journal of Experimental Psychological：Human Perception and Performance，26，488-505]发现，当注意力内源性地指向一个表面时，观察者可以更可靠地报告线索表面的简短平移方向。使用类似的设计[Reynolds，J.H.，Alborzian，S.，& Stoner，G. R.（2003年）的报告。外部提示的注意力触发表面的竞争性选择，视觉研究，43，59-66]发现，即使在没有内源性提示的情况下，第一个翻译也充当了有效的外源性提示，这损害了观察者区分其他表面的后续翻译的能力。我们研究了这种外源性线索效应的神经基础，通过记录视觉事件相关电位（ERP）引起的翻译的线索和uncooked表面。受试者的任务是判断第一次和第二次翻译是否是相同的方向，和他们的表现受损时，第二次翻译发生在uncued，相比，线索表面。提示表面第二次平移所诱发的ERP的后C1（75-110 ms）和N1（160-210 ms）成分大于非提示表面平移所诱发的ERP。这些行为和ERP提示的影响，即使当两个表面是相同的颜色，因此不能归因于注意相关的调制的颜色通道的增益。这些研究结果提供了证据表明，外源性线索的结果在优先选择的线索表面在早期和中期阶段的视觉皮层处理。(c)2005爱思唯尔有限公司保留所有权利。
Using a transparent motion paradigm, [Valdes-Sosa, M., Bobes, M. A., Rodriguez, V., & Pinilla, T. (1998). Switching attention without shifting the spotlight object-based attentional modulation of brain potentials, Journal of Cognitive Neuroscience, 10, 137151; Valdes-Sosa, M., Cobo, A., & Pinilla, T. (2000). Attention to object files defined by transparent motion, Journal of Experimental Psychological: Human Perception and Performance, 26, 488-505] found that when attention is endogenously directed to one surface, observers can more reliably report the direction of a brief translation of the cued than the uncued surface. Using a similar design [Reynolds, J. H., Alborzian, S., & Stoner, G. R. (2003). Exogenously cued attention triggers competitive selection of surfaces, Vision Research, 43, 59-66] found that even in the absence of an endogenous cue, the first translation acted as a potent exogenous cue that impaired the observer's ability to discriminate a subsequent translation of the other surface. We investigated the neural basis of this exogenous cueing effect by recording visual event-related potentials (ERPs) elicited by translations of the cued and uncued surfaces.. Subjects were given the task of judging whether or not the first and second translations were identical in direction, and their performance was impaired when the second translation occurred on the uncued, as compared to the cued surface. The posterior C1 (75-110 ms) and N1 (160-210 ms) components of the ERP elicited by the second translation of the cued surface were larger than those elicited by translation of the uncued surface. These behavioral and ERP cueing effects were present even when the two surfaces were identical in color and thus could not be attributed to attention-related modulations of the gain of color channels. These findings provide evidence that exogenous cueing results in preferential selection of the cued surface at both early and intermediate stages of visual-cortical processing. (c) 2005 Elsevier Ltd. All rights reserved.