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• W4307698912 startingPage "e1010320" @default.
• W4307698912 abstract "In general, strategies for spatial navigation could employ one of two spatial reference frames: egocentric or allocentric. Notwithstanding intuitive explanations, it remains unclear however under what circumstances one strategy is chosen over another, and how neural representations should be related to the chosen strategy. Here, we first use a deep reinforcement learning model to investigate whether a particular type of navigation strategy arises spontaneously during spatial learning without imposing a bias onto the model. We then examine the spatial representations that emerge in the network to support navigation. To this end, we study two tasks that are ethologically valid for mammals-guidance, where the agent has to navigate to a goal location fixed in allocentric space, and aiming, where the agent navigates to a visible cue. We find that when both navigation strategies are available to the agent, the solutions it develops for guidance and aiming are heavily biased towards the allocentric or the egocentric strategy, respectively, as one might expect. Nevertheless, the agent can learn both tasks using either type of strategy. Furthermore, we find that place-cell-like allocentric representations emerge preferentially in guidance when using an allocentric strategy, whereas egocentric vector representations emerge when using an egocentric strategy in aiming. We thus find that alongside the type of navigational strategy, the nature of the task plays a pivotal role in the type of spatial representations that emerge." @default.
• W4307698912 created "2022-11-05" @default.
• W4307698912 creator A5009383671 @default.
• W4307698912 creator A5082936256 @default.
• W4307698912 date "2022-10-31" @default.
• W4307698912 modified "2023-09-25" @default.
• W4307698912 title "Navigation task and action space drive the emergence of egocentric and allocentric spatial representations" @default.
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• W4307698912 doi "https://doi.org/10.1371/journal.pcbi.1010320" @default.
• W4307698912 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36315587" @default.
• W4307698912 hasPublicationYear "2022" @default.
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