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The Neurobiology of Semantic Processing in Autism Spectrum Disorder: An Activation Likelihood Estimation Analysis

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Abstract

Semantic processing impairments are present in a proportion of individuals with autism spectrum disorder (ASD). Despite the numerous imaging studies investigating this language domain in ASD, there is a lack of consensus regarding the brain structures showing abnormal pattern of activity. This meta-analysis aimed to identify neural activation patterns present during semantic processing in ASD. Findings reveal activation of areas associated with semantic processing and executive functions in ASD. However, the activation was less concise in comparison to controls and there was less activation in the right hemisphere and in areas associated with executive functions. This provides strong support for impaired semantic processing in ASD that is consistently associated with abnormal patterns of neural activity in the semantic network.

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Acknowledgments

We would like to thank Zahra Emami for providing helpful comments and guidance while the manuscript was being prepared. An earlier version of this manuscript was submitted in partial fulfilment of a graduate course credit by the first author.

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L.P. conceived and planned the analysis. L.P carried out the literature search and the analyses. L.P, C.A. and E.P. contributed to interpretation of results. L.P took the lead in writing the manuscript, and all authors provided feedback and contributed to the final version of the manuscript. C.A supervised the project.

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Correspondence to Lee Phan.

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Phan, L., Tariq, A., Lam, G. et al. The Neurobiology of Semantic Processing in Autism Spectrum Disorder: An Activation Likelihood Estimation Analysis. J Autism Dev Disord 51, 3266–3279 (2021). https://doi.org/10.1007/s10803-020-04794-9

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  • DOI: https://doi.org/10.1007/s10803-020-04794-9

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