Electrocortical responses associated with attention bias to fearful facial expressions and auditory distress signals
Electrocortical responses associated with attention bias to fearful facial expressions and auditory distress signals
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DOI：
10.1016/j.ijpsycho.2020.02.014
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发表时间：
2020-05-01
影响因子：
3
通讯作者：
Carlson, Joshua M.
中科院分区：
文献类型：
--
作者：
Andrzejewski, Jeremy A.;Carlson, Joshua M.
理解听觉和视觉感官领域的情感刺激如何相互作用并影响多模态注意机制，对于理解人类如何在日常生活中发生的连续感官信息流中优先考虑和隔离充满情感的刺激非常重要。虽然过去已经使用了多模态情感人类相关刺激，但这项研究是第一个研究人类如何产生与威胁相关的声音（例如，尖叫声）与人类产生的威胁的视觉线索（恐惧的面部表情）相互作用，以确定这些汇聚的威胁源是否由与注意力相关的事件相关电位（ERP）成分（N170、N2和N2pc）测量的视觉注意力的组合或孤立增强来表示。使用点探测任务，本研究表明，多模态视听威胁的汇聚源相互作用，以调节N170 ERP组件，使听觉困扰信号扩大了对侧增强引起的恐惧的脸线索以外的注意聚光灯。在N2pc和前N2上均未观察到多模式易化。相反，单独的单峰效应，观察到这些ERP组件。
Understanding how emotional stimuli across auditory and visual sensory domains interact and influence multimodal attentional mechanisms is important to understanding how humans prioritize and isolate emotionally-laden stimuli in a continual stream of sensory information that occurs in everyday life. While multimodal emotional human-relevant stimuli have been used in the past, this study is one of the first to look at how human-generated threat-related sounds (e.g., screams) interact with human-generated visual cues of threat (fearful facial expressions) to determine whether these converging sources of threat are represented by either combined or isolated enhancements of visual attention as measured with event-related potential (ERP) components related to attention: the N170, N2, and N2pc. Using the dot-probe task, this study demonstrates that converging sources of multimodal audiovisual threat interact to modulate the N170 ERP component such that auditory distress signals widen the spotlight of attention beyond the contralateral enhancement elicited by the fearful face cue. Multimodal facilitation was neither observed on the N2pc nor the anterior N2. Rather, separate unimodal effects were observed on these ERP components.