Differential stability of task variable representations in retrosplenial cortex

Luis M. Franco () and Michael J. Goard ()
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Luis M. Franco: University of California, Santa Barbara
Michael J. Goard: University of California, Santa Barbara

Nature Communications, 2024, vol. 15, issue 1, 1-17

Abstract: Abstract Cortical neurons store information across different timescales, from seconds to years. Although information stability is variable across regions, it can vary within a region as well. Association areas are known to multiplex behaviorally relevant variables, but the stability of their representations is not well understood. Here, we longitudinally recorded the activity of neuronal populations in the mouse retrosplenial cortex (RSC) during the performance of a context-choice association task. We found that the activity of neurons exhibits different levels of stability across days. Using linear classifiers, we quantified the stability of three task-relevant variables. We find that RSC representations of context and trial outcome display higher stability than motor choice, both at the single cell and population levels. Together, our findings show an important characteristic of association areas, where diverse streams of information are stored with varying levels of stability, which may balance representational reliability and flexibility according to behavioral demands.

Date: 2024
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DOI: 10.1038/s41467-024-51227-7

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