Bennett P J, Pratt J
Department of Psychology, University of Toronto, Ontario, Canada.
Psychol Sci. 2001 Jan;12(1):76-80. doi: 10.1111/1467-9280.00313.
Inhibition of return (IOR) refers to the finding that response times (RTs) are typically slower for targets at previously attended (cued) locations than for targets at novel (uncued) locations. Although previous research has indicated that IOR may spread beyond a cued location, the present study is the first to examine the spatial distribution of IOR with high spatial resolution over a large portion of the central visual field. This was done by using a typical IOR procedure (cue, delay, target) with 4 cue locations and 441 target locations (each separated by 1 degree of visual angle). The results indicate that IOR spreads beyond the cued location to affect the cued hemifield. However, the cues also produced a gradient of RTs throughout the visual field, with inhibition in the cued hemifield gradually giving way to facilitation in the hemifield opposite the cue.
返回抑制（IOR）是指这样一个发现：与新的（未被提示的）位置上的目标相比，先前被注意到（被提示的）位置上的目标的反应时间（RTs）通常更慢。尽管先前的研究表明IOR可能会扩展到被提示的位置之外，但本研究首次以高空间分辨率在中央视野的大部分区域研究IOR的空间分布。这是通过使用具有4个提示位置和441个目标位置（每个位置相隔1度视角）的典型IOR程序（提示、延迟、目标）来完成的。结果表明，IOR会扩展到被提示的位置之外，影响被提示的半视野。然而，提示也在整个视野中产生了反应时间的梯度，被提示半视野中的抑制逐渐让位于提示相反半视野中的促进。
