期刊
FRONTIERS IN PSYCHOLOGY
卷 13, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fpsyg.2022.915260
关键词
visuospatial attention; visuomotor adaptation; parahippocampal gyrus; sensorimotor adaptation; posterior parietal cortex; navigation network; cerebellum
资金
- National Science Foundation [BCS-1921415, BCS-2022572]
- National Institutes of Health Ruth L. Kirschstein National Research Service Award
- Clinical Neurosciences Program of the National Institute of Neurological Disorders and Stroke
- NIMH Intramural Research Program
A study using Structural Equation Modeling (SEM) revealed the brain network connectivity and correlations underlying the sensorimotor and cognitive aftereffects induced by Prism Adaptation (PA). The findings showed that PA is supported by two functionally distinct subnetworks, one responsible for sensorimotor aftereffects and another responsible for cognitive aftereffects.
Prism adaptation (PA) is a form of visuomotor training that produces both sensorimotor and cognitive aftereffects depending on the direction of the visual displacement. Recently, a neural framework explaining both types of PA-induced aftereffects has been proposed, but direct evidence for it is lacking. We employed Structural Equation Modeling (SEM), a form of effective connectivity analysis, to establish directionality among connected nodes of the brain network thought to subserve PA. The findings reveal two distinct network branches: (1) a loop involving connections from the parietal cortices to the right parahippocampal gyrus, and (2) a branch linking the lateral premotor cortex to the parahippocampal gyrus via the cerebellum. Like the sensorimotor aftereffects, the first branch exhibited qualitatively different modulations for left versus right PA, and critically, changes in these connections were correlated with the magnitude of the sensorimotor aftereffects. Like the cognitive aftereffects, changes in the second branch were qualitatively similar for left and right PA, with greater change for left PA and a trend correlation with cognitive aftereffects. These results provide direct evidence that PA is supported by two functionally distinct subnetworks, a parietal-temporal network responsible for sensorimotor aftereffects and a fronto-cerebellar network responsible for cognitive aftereffects.
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