Canonical goal-selective representations are absent from prefrontal cortex in a spatial working memory task requiring behavioral flexibility.

Abstract:

:The prefrontal cortex (PFC)'s functions are thought to include working memory, as its activity can reflect information that must be temporarily maintained to realize the current goal. We designed a flexible spatial working memory task that required rats to navigate - after distractions and a delay - to multiple possible goal locations from different starting points and via multiple routes. This made the current goal location the key variable to remember, instead of a particular direction or route to the goal. However, across a broad population of PFC neurons, we found no evidence of current-goal-specific memory in any previously reported form - that is differences in the rate, sequence, phase, or covariance of firing. This suggests that such patterns do not hold working memory in the PFC when information must be employed flexibly. Instead, the PFC grouped locations representing behaviorally equivalent task features together, consistent with a role in encoding long-term knowledge of task structure.

journal_name

Elife

journal_title

eLife

authors

Böhm C,Lee AK

doi

10.7554/eLife.63035

subject

Has Abstract

pub_date

2020-12-24 00:00:00

issn

2050-084X

pii

63035

journal_volume

9

pub_type

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