By applying group information guided independent component analysis to fMRI data, the dFNCs of each subject were estimated using a sliding window method and k-means clustering. Four dynamic functional states were identified. Interestingly, our study found that dwell time in State I was positively correlated with resting tremor scors in TD-PDs dFNC strength between BG and vSMN in State3 had significant positive correlation with MDS-UPDRS-III score in PD patients. Our study indicates that tremor in Parkinson’s disease is characterized by altered dFNC strength and temporal properties in dynamic connectivity, which provides a new insight into the pathological of Parkinsonian tremor.
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