Autism: reduced connectivity between cortical areas involved in face expression, theory of mind, and the sense of self

Brain : a Journal of Neurology
Wei ChengJianfeng Feng

Abstract

Whole-brain voxel-based unbiased resting state functional connectivity was analysed in 418 subjects with autism and 509 matched typically developing individuals. We identified a key system in the middle temporal gyrus/superior temporal sulcus region that has reduced cortical functional connectivity (and increased with the medial thalamus), which is implicated in face expression processing involved in social behaviour. This system has reduced functional connectivity with the ventromedial prefrontal cortex, which is implicated in emotion and social communication. The middle temporal gyrus system is also implicated in theory of mind processing. We also identified in autism a second key system in the precuneus/superior parietal lobule region with reduced functional connectivity, which is implicated in spatial functions including of oneself, and of the spatial environment. It is proposed that these two types of functionality, face expression-related, and of one's self and the environment, are important components of the computations involved in theory of mind, whether of oneself or of others, and that reduced connectivity within and between these regions may make a major contribution to the symptoms of autism.

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Citations

Mar 26, 2016·Frontiers in Human Neuroscience·Rebecca L BondJason D Warren
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Methods Mentioned

BETA
SMA

Software Mentioned

Statistical Parametric Mapping package ( SPM8
ABIDE
SPM8
BrainNet Viewer

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