Graduate Institute of Mind Brain and Consciousness, Taipei Medical University, Taipei, Taiwan; Brain and Consciousness Research Center, TMU-Shuang Ho Hospital, New Taipei City, Taiwan; Institute of Cognitive Neuroscience, Nation Central University, Taiwan.
Institute of Cognitive Neuroscience, Nation Central University, Taiwan.
Brain Cogn. 2021 Aug;152:105769. doi: 10.1016/j.bandc.2021.105769. Epub 2021 Jun 26.
Retrieval orientation, which is involved in recognition cue processing, optimizes goal-directed memory retrieval. However, whether the emotionality of encoding context affects subsequent retrieval orientation remains unclear. To clarify this, neutral objects were paired with either emotional or neutral background scenes during the study phase. During recognition test, only neutral objects were presented. The ERP analysis on the correctly rejected new items indicated that at least two processes were modulated by the emotionality of memory: 1) the arousal-modulated effect on the right-frontal scalp, and 2) the posterior-distributed effect, which was found to differentiate between memories with positive and negative valence. Furthermore, the magnitude of posterior-distributed effect was correlated with affective rating. The topographical distribution indicated that retrieval orientation for positive memories involves at least partially different neural circuitries from neutral or negative memories. Our results suggest that the emotionality of encoding context affects subsequent retrieval orientation.
检索定向涉及识别线索处理，可优化目标导向的记忆检索。然而，编码背景的情绪性是否会影响后续的检索定向尚不清楚。为了阐明这一点，在学习阶段，中性物体与情绪或中性背景场景配对。在识别测试中，只呈现中性物体。对正确拒绝的新项目的 ERP 分析表明，记忆的情绪性至少调节了两个过程：1）对右额头皮的唤醒调节效应，以及 2）在后分布的效应，该效应可区分具有正性和负性效价的记忆。此外，后分布效应的幅度与情感评分相关。地形图分布表明，积极记忆的检索定向至少部分涉及与中性或负性记忆不同的神经回路。我们的结果表明，编码背景的情绪性会影响后续的检索定向。
