Emma Roscow
@emmaroscow.bsky.social
Machine learning @ EcoVadis | ex-neuroscience-postdoc who still dabbles
...we report that cell pairs that contributed the most to hippocampal-striatal reactivation encoded reward prediction, being coactive on the approach to reward location and more so when the reward was expected to be more likely.
www.nature.com/articles/s41...
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www.nature.com/articles/s41...
4/4
Post-learning replay of hippocampal-striatal activity is biased by reward-prediction signals - Nature Communications
It is unclear which aspects of experience shape sleep’s contributions to learning. Here, by combining neural recordings in rats with reinforcement learning, the authors show that reward-prediction sig...
www.nature.com
November 29, 2025 at 6:33 PM
...we report that cell pairs that contributed the most to hippocampal-striatal reactivation encoded reward prediction, being coactive on the approach to reward location and more so when the reward was expected to be more likely.
www.nature.com/articles/s41...
4/4
www.nature.com/articles/s41...
4/4
We then looked for evidence of this in neural activity by recording simultaneously from CA1 (hippocampus) and ventral striatum, two brain areas known to jointly reactivate reward-related activity in the sleep and rest period following learning. In the now-published paper...
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November 29, 2025 at 6:32 PM
We then looked for evidence of this in neural activity by recording simultaneously from CA1 (hippocampus) and ventral striatum, two brain areas known to jointly reactivate reward-related activity in the sleep and rest period following learning. In the now-published paper...
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We directly compared these two factors in a reinforcement learning task, and found that learning dynamics in rat behaviour are better explained by a bias towards RPE than reward. (Our original submission to Nat. Comms and 2019 preprint ended there - now there's more!)
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November 29, 2025 at 6:32 PM
We directly compared these two factors in a reinforcement learning task, and found that learning dynamics in rat behaviour are better explained by a bias towards RPE than reward. (Our original submission to Nat. Comms and 2019 preprint ended there - now there's more!)
2/4
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