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Latent representations in hippocampal network model co-evolve with behavioral exploration of task structure

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  • Ian Cone

    (Imperial College London)

  • Claudia Clopath

    (Imperial College London)

Abstract

To successfully learn real-life behavioral tasks, animals must pair actions or decisions to the task’s complex structure, which can depend on abstract combinations of sensory stimuli and internal logic. The hippocampus is known to develop representations of this complex structure, forming a so-called “cognitive map”. However, the precise biophysical mechanisms driving the emergence of task-relevant maps at the population level remain unclear. We propose a model in which plateau-based learning at the single cell level, combined with reinforcement learning in an agent, leads to latent representational structures codependently evolving with behavior in a task-specific manner. In agreement with recent experimental data, we show that the model successfully develops latent structures essential for task-solving (cue-dependent “splitters”) while excluding irrelevant ones. Finally, our model makes testable predictions concerning the co-dependent interactions between split representations and split behavioral policy during their evolution.

Suggested Citation

  • Ian Cone & Claudia Clopath, 2024. "Latent representations in hippocampal network model co-evolve with behavioral exploration of task structure," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-44871-6
    DOI: 10.1038/s41467-024-44871-6
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    References listed on IDEAS

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