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Transforming the Concept of Memory Reactivation
Trends in Neurosciences ( IF 15.9 ) Pub Date : 2020-12-01 , DOI: 10.1016/j.tins.2020.09.006
Serra E Favila 1 , Hongmi Lee 2 , Brice A Kuhl 3
Affiliation  

Reactivation refers to the phenomenon wherein patterns of neural activity expressed during perceptual experience are re-expressed at a later time, a putative neural marker of memory. Reactivation of perceptual content has been observed across many cortical areas and correlates with objective and subjective expressions of memory in humans. However, because reactivation emphasizes similarities between perceptual and memory-based representations, it obscures differences in how perceptual events and memories are represented. Here, we highlight recent evidence of systematic differences in how (and where) perceptual events and memories are represented in the brain. We argue that neural representations of memories are best thought of as spatially transformed versions of perceptual representations. We consider why spatial transformations occur and identify critical questions for future research.

中文翻译:

转变记忆再激活的概念

再激活是指在感知体验期间表达的神经活动模式在以后重新表达的现象,这是一种假定的记忆神经标记。在许多皮层区域观察到感知内容的重新激活,并与人类记忆的客观和主观表达相关。然而,因为再激活强调感知和基于记忆的表征之间的相似性,它掩盖了感知事件和记忆如何被表征的差异。在这里,我们强调了最近关于感知事件和记忆在大脑中如何(以及在​​哪里)表示的系统差异的证据。我们认为,记忆的神经表征最好被认为是感知表征的空间转换版本。
更新日期:2020-12-01
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