Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou 310028, China.
Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou 310028, China.
Acta Psychol (Amst). 2020 Oct;210:103156. doi: 10.1016/j.actpsy.2020.103156. Epub 2020 Aug 13.
It has been proved that item memory and source memory are two dissociable processes, as reflected by differential influence at behavioral and electrophysiological levels, the latter being evidenced by the ERP old/new effects. Specially for source memory, the retrieval of color source may be unique from recollecting other types of contextual information, which can be seen from the late posterior negativity (LPN). However, the mediation of emotional valence on the old/new effects for verbal stimuli encoded in colors remains unknown. Adopting words of three emotional valences (i.e., positive, neutral, and negative), with their displayed colors serving as sources, the current experiment aimed to explore the sensitivity of old/new effects to emotion for both item memory and source memory. Results demonstrated that: the FN400 that reflects familiarity was recorded and it was sensitive to emotional valence across both memory tasks; the mediation of emotional valence was absent in recollection-reflected LPC, neither for item memory nor for source memory; an association between LPN and color source retrieval was confirmed, with reliable amplitudes for neutral words but not for emotional words. These data were discussed in terms of the dual-process model and other accounts. Future research directions were recommended.
已经证明，项目记忆和来源记忆是两个可分离的过程，这反映在行为和电生理水平的不同影响上，后者的证据是 ERP 旧/新效应。特别是对于来源记忆，颜色来源的检索可能与回忆其他类型的上下文信息不同，这可以从晚期后负波（LPN）中看出。然而，情绪效价对以颜色编码的言语刺激的旧/新效应的中介作用尚不清楚。采用三种情绪效价（即积极、中性和消极）的单词，以其显示的颜色作为来源，本实验旨在探索旧/新效应对两种记忆任务中项目记忆和来源记忆的情绪敏感性。结果表明：记录到反映熟悉度的 FN400，并且在两种记忆任务中都对情绪效价敏感；情绪效价在回忆反映的 LPC 中没有中介作用，无论是在项目记忆还是来源记忆中；LPN 与颜色来源检索之间存在关联，中性词的振幅可靠，但情绪词的振幅不可靠。这些数据是根据双加工模型和其他解释进行讨论的。建议了未来的研究方向。
