University of California, Los Angeles, Department of Psychology, Los Angeles, CA, USA.
Columbia University, Department of Psychology, New York City, NY, USA.
Nat Commun. 2023 Oct 17;14(1):6533. doi: 10.1038/s41467-023-42241-2.
Human emotions fluctuate over time. However, it is unclear how these shifting emotional states influence the organization of episodic memory. Here, we examine how emotion dynamics transform experiences into memorable events. Using custom musical pieces and a dynamic emotion-tracking tool to elicit and measure temporal fluctuations in felt valence and arousal, our results demonstrate that memory is organized around emotional states. While listening to music, fluctuations between different emotional valences bias temporal encoding process toward memory integration or separation. Whereas a large absolute or negative shift in valence helps segment memories into episodes, a positive emotional shift binds sequential representations together. Both discrete and dynamic shifts in music-evoked valence and arousal also enhance delayed item and temporal source memory for concurrent neutral items, signaling the beginning of new emotional events. These findings are in line with the idea that the rise and fall of emotions can sculpt unfolding experiences into memories of meaningful events.
人类的情绪随时间波动。然而，这些不断变化的情绪状态如何影响情景记忆的组织尚不清楚。在这里，我们研究了情绪动态如何将体验转化为难忘的事件。使用定制的音乐片段和动态情绪跟踪工具来引出和测量情感效价和唤醒的时间波动，我们的结果表明，记忆是围绕情绪状态组织的。在听音乐时，不同情绪效价之间的波动使时间编码过程偏向于记忆整合或分离。而效价的大的绝对变化或负向变化有助于将记忆分割成片段，而正向情绪变化则将连续的表示结合在一起。音乐引起的效价和唤醒的离散和动态变化也增强了对同时呈现的中性项目的延迟项目和时间源记忆，标志着新的情绪事件的开始。这些发现与这样一种观点一致，即情绪的起伏可以将展开的体验塑造为有意义事件的记忆。
