University of Allahabad, Allahabad, India.
Cogn Emot. 2011 Feb;25(2):280-94. doi: 10.1080/02699931.2010.492719.
Inhibition of return (IOR) refers to the larger response time to cued targets appearing at long cue-to-target intervals. Given emotion-attention interactions and associated visual field (VF) asymmetries, we examined the effects of emotions and hemispheric processing on object- and location-based IOR. We expected reduced IOR and right hemispheric bias accompanied by differences in event-related potentials (ERPs) including lack of suppression of cued N1 and enhancement of Nd components for sad targets. Reaction times and ERPs were recorded in an exogenous cuing detection task using happy and sad schematic faces. Results revealed reduced IOR for left compared to right VF with sad faces but no such asymmetry for happy faces. Cued N1 amplitudes were suppressed for happy targets but not for sad targets presented to the left VF. Nd amplitudes were enhanced for right-hemispheric sad faces especially with object-based IOR. The results indicate right-hemispheric advantage in the capture of attention by negative emotion especially with object-based selection.
返回抑制（IOR）是指在长的线索-目标间隔下，对提示目标的反应时间更长。鉴于情绪-注意相互作用和相关的视场（VF）不对称，我们研究了情绪和半球加工对基于对象和基于位置的 IOR 的影响。我们预计会出现减少的 IOR 和右半球偏向，同时伴随着事件相关电位（ERP）的差异，包括对提示 N1 的抑制缺乏和对悲伤目标的 Nd 成分的增强。在使用快乐和悲伤示意图面孔的外源性线索检测任务中记录了反应时间和 ERP。结果表明，与快乐面孔相比，悲伤面孔在左 VF 出现时 IOR 减少，但在右 VF 时则没有这种不对称。对于呈现给左 VF 的快乐目标，提示 N1 幅度被抑制，但对于悲伤目标则没有。对于右半球的悲伤面孔，Nd 幅度特别随着基于对象的 IOR 而增强。结果表明，负性情绪尤其在基于对象的选择中对注意力的捕获具有右半球优势。
