Vertex-wise group differences in the rate of change of cortical thickness.

Cold colors represent increased cortical thinning in the first group compared to the second group, warm colors represent increased cortical thinning in the second group compared to the first group. Results corrected with the cluster-wise threshold (p < .05). HC, healthy controls; PD-MCI, Parkinson’s disease with mild cognitive impairment; PD-non-MCI, Parkinson’s disease without mild cognitive impairment.