Expectancy and attention bias to spiders: Dissecting anticipation and allocation processes using ERPs

期望理论 心理学 蜘蛛 或有负变差 认知心理学 事件相关电位 预测(人工智能) 视觉搜索 听力学 脑电图 发展心理学 神经科学 社会心理学 生物 生态学 人工智能 计算机科学 医学
作者
Elinor Abado,Tatjana Aue,Gilles Pourtois,Hadas Okon‐Singer
出处
期刊:Psychophysiology [Wiley]
被引量:2
标识
DOI:10.1111/psyp.14546
摘要

Abstract The current registered report focused on the temporal dynamics of the relationship between expectancy and attention toward threat, to better understand the mechanisms underlying the prioritization of threat detection over expectancy. In the current event‐related potentials experiment, a‐priori expectancy was manipulated, and attention bias was measured, using a well‐validated paradigm. A visual search array was presented, with one of two targets: spiders (threatening) or birds (neutral). A verbal cue stating the likelihood of encountering a target preceded the array, creating congruent and incongruent trials. Following cue presentation, preparatory processes were examined using the contingent negative variation (CNV) component. Following target presentation, two components were measured: early posterior negativity (EPN) and late positive potential (LPP), reflecting early and late stages of natural selective attention toward emotional stimuli, respectively. Behaviorally, spiders were found faster than birds, and congruency effects emerged for both targets. For the CNV, a non‐significant trend of more negative amplitudes following spider cues emerged. As expected, EPN and LPP amplitudes were larger for spider targets compared to bird targets. Data‐driven, exploratory, topographical analyses revealed different patterns of activation for bird cues compared to spider cues. Furthermore, 400–500 ms post‐target, a congruency effect was revealed only for bird targets. Together, these results demonstrate that while expectancy for spider appearance is evident in differential neural preparation, the actual appearance of spider target overrides this expectancy effect and only in later stages of processing does the cueing effect come again into play.
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