Roggeveen Alexa B, Prime David J, Ward Lawrence M
Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver, BC, V6K 2W7, Canada.
Exp Brain Res. 2005 Nov;167(1):86-94. doi: 10.1007/s00221-005-0010-5. Epub 2005 Oct 29.
Inhibition of return (IOR) refers to slower responding to stimuli at previously occupied spatial locations. IOR has been vigorously studied because of its possible deep involvement with attention mechanisms. Although IOR occurs both within and across modalities in several experimental paradigms for simple stimulus detection tasks, it has sometimes been difficult to demonstrate in perceptual discrimination tasks. In the preferred target-target paradigm, in which responses are made to a series of targets that vary in spatial location, failure to find IOR could possibly result from mixing of spatial IOR with the facilitating effects of stimulus and/or response repetition on discrimination response times. In this paper we report the first demonstration of auditory/auditory and cross-modality IOR in a target-target paradigm using a discrimination task. Our results show that IOR occurs in this task only on trials on which stimuli and responses are not repeated. These findings present a challenge to purely visual accounts of IOR and support the view that IOR arises within a more general, supra-modal mechanism of attention.
返回抑制（IOR）是指对先前占据的空间位置处的刺激做出反应的速度变慢。由于IOR可能与注意力机制深度相关，因此对其进行了大量研究。尽管在简单刺激检测任务的几种实验范式中，IOR在模态内和模态间都会出现，但在知觉辨别任务中有时很难证明其存在。在首选的目标-目标范式中，对一系列空间位置不同的目标做出反应，未能发现IOR可能是由于空间IOR与刺激和/或反应重复对辨别反应时间的促进作用相混合所致。在本文中，我们报告了在使用辨别任务的目标-目标范式中首次证明听觉/听觉和跨模态IOR。我们的结果表明，IOR仅在刺激和反应不重复的试验中出现在此任务中。这些发现对IOR的纯视觉解释提出了挑战，并支持了IOR产生于更一般的超模态注意力机制这一观点。
