每周论坛之十二（总第160期）：曲折（太阳集团官网），2017年12月4日下午

每周论坛之十二（总第160期）

报告人：曲折 副教授

报告人单位：太阳成集团tyc151cc

题目：The role of top-down spatial attention in contingent attentional capture

时间：2017年 12 月 4 日 （周一，14:20-16:00）

地点：太阳集团官网东校园太阳成集团tyc151cc（南学院楼C座）305

报告简介：

It is well known that attentional capture by an irrelevant salient item is contingent on top-down feature selection, but whether attentional capture may be modulated by top-down spatial attention remains unclear. Here, we combined behavioral and ERP measurements to investigate the contribution of top-down spatial attention to attentional capture under modified spatial cueing paradigms. Each target stimulus was preceded by a peripheral circular cue array containing a spatially uninformative color singleton cue. We varied target sets but kept the cue array unchanged among different experimental conditions. When participants’ task was to search for a colored letter in the target array that shared the same peripheral locations with the cue array, attentional capture by the peripheral color cue was reflected by both a behavioral spatial cueing effect and a cue-elicited N2pc component. When target arrays were presented more centrally, both the behavioral and N2pc effects were attenuated but still significant. The attenuated cue-elicited N2pc was found even when participants focused their attention on the fixed central location to identify a colored letter among an RSVP letter stream. By contrast, when participants were asked to identify an outlined or larger target, neither the behavioral spatial cueing effect nor the cue-elicited N2pc was observed, regardless of whether the target and cue arrays shared same locations or not. These results add to the evidence that attentional capture by salient stimuli is contingent upon feature-based task sets, and further indicate that top-down spatial attention is important but may not be necessary for contingent attentional capture.

报告人简介：

曲折，太阳成集团tyc151cc，副教授，博导，广东省心理学会理事。主要研究兴趣是结合行为学和脑功能研究方法（ERP/MEG等）探讨视觉注意与意识、学习与记忆、老年人认知功能测评等前沿科学问题。在Cerebral Cortex, JEP:HPP, Neuropsychology, Psychophysiology, Human Brain Mapping, 心理学报等国内外重要学术期刊发表论文20多篇。主持包括国家自然基金面上项目，教育部人文社科项目等多项基金项目。