Parkinson’s disease (PD) is a common neurodegenerative disease. Besides motor deficits, autonomic and cognitive dysfunctions might be caused by global abnormalities beyond the dopaminergic system. We performed resting-state fMRI to measure functional connectivity between the central autonomic network and eight other critical resting networks in both early PD and healthy control groups. Using general linear models, we identified functional impairments in the inter- and intra-network connections in relation to various brain functions. These findings could shed light on the neural mechanisms behind the complex clinical manifestations evident even in the early stages of PD.
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