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


Type
Article
Change log
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)