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Neurosci Biobehav Rev. 2017 Jun;77:388-402. doi: 10.1016/j.neubiorev.2017.04.009. Epub 2017 Apr 14.

Deep temporal models and active inference.

Author information

1
Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, WC1N 3BG, UK. Electronic address: k.friston@ucl.ac.uk.
2
Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, WC1N 3BG, UK. Electronic address: r.rosch@ucl.ac.uk.
3
Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, WC1N 3BG, UK. Electronic address: thomas.parr.12@ucl.ac.uk.
4
Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, WC1N 3BG, UK. Electronic address: c.j.price@ucl.ac.uk.
5
Centre for Cognitive Neuroscience and Cognitive Systems and the School of Computing, University of Kent at Canterbury, Canterbury, Kent, CT2 7NF, UK; School of Psychology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK. Electronic address: H.Bowman@kent.ac.uk.

Erratum in

Abstract

How do we navigate a deeply structured world? Why are you reading this sentence first - and did you actually look at the fifth word? This review offers some answers by appealing to active inference based on deep temporal models. It builds on previous formulations of active inference to simulate behavioural and electrophysiological responses under hierarchical generative models of state transitions. Inverting these models corresponds to sequential inference, such that the state at any hierarchical level entails a sequence of transitions in the level below. The deep temporal aspect of these models means that evidence is accumulated over nested time scales, enabling inferences about narratives (i.e., temporal scenes). We illustrate this behaviour with Bayesian belief updating - and neuronal process theories - to simulate the epistemic foraging seen in reading. These simulations reproduce perisaccadic delay period activity and local field potentials seen empirically. Finally, we exploit the deep structure of these models to simulate responses to local (e.g., font type) and global (e.g., semantic) violations; reproducing mismatch negativity and P300 responses respectively.

KEYWORDS:

Active inference; Bayesian; Free energy; Hierarchical; MMN; P300; Reading; Violation

PMID:
28416414
PMCID:
PMC5461873
DOI:
10.1016/j.neubiorev.2017.04.009
[Indexed for MEDLINE]
Free PMC Article

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