Sensitivity of late ERP old/new effects in source memory to self-referential encoding focus and stimulus emotionality

心理学 情绪性 刺激(心理学) 召回 认知心理学 价(化学) 情景记忆 负效应 认知 发展心理学 神经科学 物理 量子力学
作者
Aiqing Nie,Wenyu Zhou,Yueyue Xiao
出处
期刊:Neurobiology of Learning and Memory [Elsevier BV]
卷期号:203: 107795-107795 被引量:1
标识
DOI:10.1016/j.nlm.2023.107795
摘要

In episodic memory, the old/new effect, the contrast of the waveforms elicited by the correctly recognized studied items and the correctly rejected novel items, has been broadly concerned. However, the contribution of self-referential encoding to the old/new effect in source memory (i.e., source-SRE), is far from clarification; further, it remains unclear whether the contribution is susceptible to the factor of stimulus emotionality. To address these issues, adopting the event-related potential (ERP) technique, this study applied words of three types of emotional valences (positive, neutral, vs. negative) in the self-focus vs. external-focus encoding tasks. In the course of the test, four ERP old/new effects were identified: (a) the familiarity- and recollection-reflected mid-frontal effect (FN400) and late positive component (LPC) were both independent of source-SRE and stimulus emotionality; (b) the reconstruction-driven late posterior negativity (LPN) exhibited an adverse pattern of source-SRE and was susceptible to the emotional valence by encoding focus; and (c) the right frontal old/new effect (RFE), reflecting post-retrieval process, exhibited a source-SRE in emotional words. These effects provide compelling evidence for the influences of both stimulus valence and encoding focus on SRE in source memory, especially during the late processes. Further directions considering more perspectives are put forward.
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