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A Unifying Account of Angular Gyrus Contributions to Episodic and Semantic Cognition.

Accepted version
Peer-reviewed

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Type

Article

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Authors

Humphreys, Gina F 
Lambon Ralph, Matthew A 
Simons, Jon S 

Abstract

The angular gyrus (AG) region of lateral parietal cortex has been implicated in a wide variety of tasks and functions, generating numerous influential theories. However, these theories largely fail to explain why so many apparently distinct cognitive activities implicate common parietal structures. We propose a unifying model, based on a set of central principles, to account for coalescences of cognitive task activations across AG. To illustrate the proposed framework, we show how these principles account for findings from studies of episodic and semantic memory that have independently implicated the same AG regions but thus far been considered from largely domain-specific perspectives. We conclude that AG computations, as part of a wider lateral parietal system, enable the online dynamic buffering of multisensory spatiotemporally extended representations.

Description

Keywords

angular gyrus, cognition, episodic memory, lateral parietal cortex, semantic memory, Brain Mapping, Cognition, Humans, Magnetic Resonance Imaging, Parietal Lobe, Semantics

Journal Title

Trends Neurosci

Conference Name

Journal ISSN

0166-2236
1878-108X

Volume Title

44

Publisher

Elsevier BV
Sponsorship
James S McDonnell Foundation (220020333)
Medical Research Council (MR/R023883/1)
MRC (Unknown)
Medical Research Council (MC_UU_00005/18)