AI Article Synopsis
- Reactivation is the process where neural patterns from perceptual experiences are recalled later, indicating memory function.
- Research shows this reactivation happens in various brain areas and aligns with how we express memories, but it may overlook the key differences between how we perceive current events versus how we remember past ones.
- The authors suggest that memories may be viewed as altered spatial versions of perceptual experiences, highlighting the need for further investigation into these transformations and their implications.
Article Abstract
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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7688497 | PMC |
| http://dx.doi.org/10.1016/j.tins.2020.09.006 | DOI Listing |
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