Abnormal resting‐state functional connectivity in posterior cingulate cortex of Parkinson's disease with mild cognitive impairment and dementia

Objective To investigate changes in the functional connectivity (FC) pattern in the posterior cingulate cortex (PCC) of Parkinson's disease (PD) patients with mild cognitive impairment and dementia by employing resting‐state functional magnetic resonance imaging (RS‐fMRI).