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Review Article | Open Access

Brain asymmetry: a novel perspective on hemispheric network

Bin Wang1Lan Yang1Wenjie Yan1Weichao An2Jie Xiang1Dandan Li1( )
College of Computer Science and Technology, Taiyuan University of Technology, Jinzhong 030600, Shanxi, China
Graduate School of Interdisciplinary Science and Engineering in Health Systems, Okayama University, Okayama, Japan
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Abstract

Brain asymmetry, involving structural and functional differences between the two hemispheres, is a major organizational principle of the human brain. The structural and functional connectivity within each hemisphere defines the hemispheric network or connectome. Elucidating left-right differences of the hemispheric network provides opportunities for brain asymmetry exploration. This review examines the asymmetry in the hemispheric white matter and functional network to assess health and brain disorders. In this article, the brain asymmetry in structural and functional connectivity including network topologies of healthy individuals, involving brain cognitive systems and the development trend, is highlighted. Moreover, the abnormal asymmetry of the hemispheric network related to cognition changes in brain disorders, such as Alzheimer’s disease, schizophrenia, autism spectrum disorder, attention deficit hyperactivity disorder, and bipolar disorder, is presented. This review suggests that the hemispheric network is highly conserved for measuring human brain asymmetries and has potential in the study of the cognitive system and brain disorders.

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Brain Science Advances
Pages 56-77
Cite this article:
Wang B, Yang L, Yan W, et al. Brain asymmetry: a novel perspective on hemispheric network. Brain Science Advances, 2023, 9(2): 56-77. https://doi.org/10.26599/BSA.2023.9050014

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Received: 08 December 2022
Revised: 21 April 2023
Accepted: 11 May 2023
Published: 05 June 2023
© The authors 2023.

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