ArticleFrontiers in psychiatry2026
Disrupted sensory interhemispheric synchronization in schizophrenia: a frequency-resolved VMHC analysis.
Article in Frontiers in psychiatry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background: Aberrant interhemispheric functional connectivity has been implicated in the pathophysiology of schizophrenia. Voxel-mirrored homotopic connectivity (VMHC) provides a reliable measure of interhemispheric synchronization, yet the frequency-specific characteristics of VMHC alterations in schizophrenia remain poorly understood. Methods: Resting-state functional magnetic resonance imaging data were analyzed in patients with schizophrenia and matched healthy controls. VMHC was computed across frequency bands, with particular focus on slow-4 and slow-5 oscillations. Group differences, as well as group-by-frequency interactions, were assessed to identify frequency-specific disruption. Result: Patients with schizophrenia exhibited significantly reduced VMHC within key sensory networks, including primary visual and sensorimotor regions. Frequency-specific analyses revealed higher VMHC at slow-5 compared with slow-4 in visual gyrus and subcortical regions. Significant group-by-frequency interaction effects were observed in the middle occipital gyrus and postcentral gyrus, with Conclusion: This study demonstrates frequency-dependent reductions of interhemispheric connectivity in schizophrenia, particularly within sensory systems. The findings highlight the disrupted integration of primary perceptual and motor-related processes as a core feature of schizophrenia and emphasize the utility of frequency-resolved VMHC analyses for refining our understanding of network dysfunction. Future longitudinal studies are warranted to determine the clinical significance of these frequency-specific alterations in illness progression and treatment response.
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