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  The roles of online and offline replay in planning

Eldar, E., Lièvre, G., Dayan, P., & Dolan, R. J. (2020). The roles of online and offline replay in planning. eLife, 9: e56911. doi:10.7554/eLife.56911.

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https://doi.org/10.7554/eLife.56911 (Publisher version)
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 Creators:
Eldar, Eran1, Author              
Lièvre, Gaëlle1, Author              
Dayan, Peter, Author
Dolan, Raymond J.2, Author              
Affiliations:
1Max Planck UCL Centre for Computational Psychiatry and Ageing Research, Berlin, Germany, and London, UK, Max Planck Institute for Human Development, Max Planck Society, ou_2205641              
2External Organizations, ou_persistent22              

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 Abstract: Animals and humans replay neural patterns encoding trajectories through their environment, both whilst they solve decision-making tasks and during rest. Both on-task and off-task replay are believed to contribute to flexible decision making, though how their relative contributions differ remains unclear. We investigated this question by using magnetoencephalography (MEG) to study human subjects while they performed a decision-making task that was designed to reveal the decision algorithms employed. We characterised subjects in terms of how flexibly each adjusted their choices to changes in temporal, spatial and reward structure. The more flexible a subject, the more they replayed trajectories during task performance, and this replay was coupled with re-planning of the encoded trajectories. The less flexible a subject, the more they replayed previously preferred trajectories during rest periods between task epochs. The data suggest that online and offline replay both participate in planning but support distinct decision strategies.

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Language(s): eng - English
 Dates: 2020
 Publication Status: Published in print
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 Rev. Type: Peer
 Identifiers: DOI: 10.7554/eLife.56911
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Title: eLife
Source Genre: Journal
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Pages: - Volume / Issue: 9 Sequence Number: e56911 Start / End Page: - Identifier: -