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Abstract #2594

Altered cerebellar functional connectivity in Parkinson’s disease

Jason Langley1, Daniel E Huddleston2, and Xiaoping Hu3

1Center for Advanced Neuroimaging, University of California Riverside, Riverside, CA, United States, 2Department of Neurology, Emory University, Atlanta, GA, United States, 3Department of Bioengineering, University of California Riverside, Riverside, CA, United States

Parkinson’s disease is a progressive, neurodegenerative disorder characterized by asymmetrical onset of motor symptoms such as bradykinesia, rigidity, and tremor. Mounting evidence suggests that the cerebellum plays a major role in the pathophysiology of PD. Prior imaging studies have found altered cerebellar activation during motor execution and motor learning, suggesting that altered activation in the cerebellum may reflect Parkinsonian-related impairment. Here, we use resting-state function MRI (fMRI) to ascertain connectivity changes in the cerebellum from Parkinson's disease found reduced connectivity in lobule V of the cerebellum as well as reduced connectivity between dentate nucleus and the cerebellar cortex.

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