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Deep temporal models and active inference

Friston, Karl J., Rosch, Richard, Parr, Thomas, Price, Cathy, Bowman, Howard (2017) Deep temporal models and active inference. Neuroscience & Biobehavioral Reviews, 77 . pp. 388-402. ISSN 0149-7634. (doi:10.1016/j.neubiorev.2017.04.009) (KAR id:62002)

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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.

Item Type: Article
DOI/Identification number: 10.1016/j.neubiorev.2017.04.009
Uncontrolled keywords: Active inference; Bayesian; Hierarchical; Reading; Violation; Free energy; P300; MMN
Subjects: Q Science > QC Physics
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Computing
Depositing User: Howard Bowman
Date Deposited: 08 Jun 2017 13:06 UTC
Last Modified: 16 Feb 2021 13:46 UTC
Resource URI: (The current URI for this page, for reference purposes)
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