情绪概念理解影响空间知觉的时间进程

Time course of the influence of emotional concepts on vertical space

以往研究发现,情绪概念加工影响垂直空间知觉,但是情绪概念影响空间加工的时间进程并不清楚。本研究使用ERP技术,采用空间线索化范式下字母辨认任务,考察情绪词(“快乐”“悲伤”)影响随后空间目标加工的时间进程。行为结果发现,当字母的空间位置与情绪词隐喻的空间表征一致时(比如,线索词“快乐”跟随一个屏幕上方的目标字母),被试表现出更快的反应时间。ERP结果显示,情绪词汇理解对随后目标的调节表现出不同的ERP模式,一致条件下诱发了更大的P1和更小的N1波幅,同时产生了更大的P3波幅。当前研究结果说明,情绪概念加工影响空间目标的感觉和高级加工。

Previous work has shown that the processing of emotional concepts can influence perception of vertical space.However,the time course of influences of emotional concepts on vertical space remains unclear.With the help of behavioral and ERP techniques,the present study used central cueing paradigm to explore the nature of shifts of spatial attention induced by emotional words.Behavioral results suggested that responses were faster when the target letter’s position was congruent with the metaphorical location of emotional words(eg.,an upper target following the cue“happy”).The ERP analysis showed larger P1 and P3 amplitudes for congruent trials and larger N1 amplitudes for incongruent trials.The present study suggested that the processing of emotional words could affect the processing of subsequent spatial stimuli at multiple stages.