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  Prediction and memory: A predictive coding account

Barron, H. C., Auksztulewicz, R., & Friston, K. (2020). Prediction and memory: A predictive coding account. Progress in Neurobiology, 192: 101821. doi:10.1016/j.pneurobio.2020.101821.

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neu-20-auk-01-prediction.pdf (Publisher version), 2MB
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© 2020 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license

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 Creators:
Barron, Helen C.1, 2, Author
Auksztulewicz, Ryszard3, 4, Author           
Friston, Karl5, Author
Affiliations:
1Medical Research Council Brain Network Dynamics Unit, Nuffield Department of Clinical Neurosciences, University of Oxford, Mansfield Road, Oxford, OX1 3TH, UK, ou_persistent22              
2Wellcome Centre for Integrative Neuroimaging, University of Oxford, FMRIB, John Radcliffe Hospital, Oxford, OX3 9DU, UK, ou_persistent22              
3Department of Neuroscience, Max Planck Institute for Empirical Aesthetics, Max Planck Society, ou_2421697              
4Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, ou_persistent22              
5The Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, London, WC1N 3BG, UK, ou_persistent22              

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Free keywords: Hippocampus Neocortex Memory Prediction Interneuron
 Abstract: The hippocampus is crucial for episodic memory, but it is also involved in online prediction. Evidence suggests that a unitary hippocampal code underlies both episodic memory and predictive processing, yet within a predictive coding framework the hippocampal-neocortical interactions that accompany these two phenomena are distinct and opposing. Namely, during episodic recall, the hippocampus is thought to exert an excitatory influence on the neocortex, to reinstate activity patterns across cortical circuits. This contrasts with empirical and theoretical work on predictive processing, where descending predictions suppress prediction errors to ‘explain away’ ascending inputs via cortical inhibition. In this hypothesis piece, we attempt to dissolve this previously overlooked dialectic. We consider how the hippocampus may facilitate both prediction and memory, respectively, by inhibiting neocortical prediction errors or increasing their gain. We propose that these distinct processing modes depend upon the neuromodulatory gain (or precision) ascribed to prediction error units. Within this framework, memory recall is cast as arising from fictive prediction errors that furnish training signals to optimise generative models of the world, in the absence of sensory data.

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Language(s): eng - English
 Dates: 2020-02-262019-10-272020-04-292020-05-21
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.pneurobio.2020.101821
 Degree: -

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Title: Progress in Neurobiology
Source Genre: Journal
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Publ. Info: Oxford, Eng. : Pergamon
Pages: - Volume / Issue: 192 Sequence Number: 101821 Start / End Page: - Identifier: ISSN: 0301-0082
CoNE: https://pure.mpg.de/cone/journals/resource/954925509370