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Reduced homotopic interhemispheric connectivity in psychiatric disorders:evidence for both transdiagnostic and disorder specific features

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Psychoradiology 2022年第4期2卷 129-145页

作者： Shuxia Yao Keith M.Kendrick The Clinical Hospital of Chengdu Brain Science Institute MOE Key Laboratory for NeuroinformationUniversity of Electronic Science and Technology of ChinaChengdu 611731China

There is considerable interest in the significance of structural and functional connections between the two brain hemispheres in terms of both normal function and in relation to psychiatric *** recent years,many studies have used voxel mirrored homotopic connectivity analysis of resting state data to investigate the importance of connectivity between homotopic regions in the brain hemispheres in a range of neuropsychiatric *** current review summarizes findings fromthese voxel mirrored homotopic connectivity studies in individuals with autism spectrum disorder,addiction,attention deficit hyperactivity disorder,anxiety and depression disorders,and schizophrenia,aswell as disorders such as Alzheimer’s disease,mild cognitive impairment,epilepsy,and ***,other than attention deficit hyperactivity disorder,studies across psychiatric disorders report decreased homotopic resting state functional connectivity in the default mode,attention,salience,sensorimotor,social cognition,visual recognition,primary visual processing,and reward networks,which are often associated with symptom severity and/or illness onset/*** homotopic resting state functional connectivity may therefore represent a transdiagnostic marker for general *** terms of disorder specificity,the extensive decreases in homotopic resting state functional connectivity in autism differ markedly from attention deficit hyperactivity disorder,despite both occurring during early childhood and showing extensive co-morbidity.A pattern of more posterior than anterior regions showing reductions in schizophrenia is also *** forward,more studies are needed to elucidate the functions of these homotopic functional connections in both health and disorder and focusing on associations with general psychopathology,and not only on disorder specific symptoms.

关键词： interhemispheric communication resting state fMRI voxel mirrored homotopic connectivity psychiatric disorders transdiagnostic marker disorder specific marker

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