学习后刺激对情景学习的逆行增强作用。
Retrograde enhancement of episodic learning by a postlearning stimulus.
机构信息
Department of Anatomy and Neurobiology, University of California at Irvine, Irvine, California 92697, USA.
Department of Neurobiology and Behavior, University of California at Irvine, Irvine, California 92697, USA.
出版信息
Learn Mem. 2021 Feb 16;28(3):82-86. doi: 10.1101/lm.052191.120. Print 2021 Mar.
Evidence suggests encoding of recent episodic experiences may be enhanced by a subsequent salient event. We tested this hypothesis by giving rats a 3-min unsupervised experience with four odors and measuring retention after different delays. Animals recognized that a novel element had been introduced to the odor set at 24 but not 48 h. However, when odor sampling was followed within 5 min by salient light flashes or bedding odor, the memory lasted a full 2 d. These results describe a retroactive influence of salience to promote storage of episodic information and introduce a unique model for studying underlying plasticity mechanisms.
有证据表明，后续显著事件可能会增强近期情景体验的编码。我们通过让大鼠在没有监督的情况下经历 3 分钟的四种气味，然后在不同的时间间隔后测量保留情况来验证这一假设。动物在 24 小时而不是 48 小时后识别出气味集中出现了新的元素。然而，当气味采样后 5 分钟内出现显著的光闪烁或床褥气味时，记忆可以持续整整 2 天。这些结果描述了显著事件的回溯影响，以促进情景信息的存储，并引入了一种独特的模型来研究潜在的可塑性机制。
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