Correction to: npj Parkinson’s Disease https://doi.org/10.1038/s41531-025-00931-2, published online 22 April 2025

In the Discussion section of this paper, the sentence ‘In the PD-MCI group, only cerebellar lobule VIII showed significantly higher glucose metabolism than the PD-NC group. These findings suggest that cerebellar lobule VIII may be involved in the early stages of cognitive decline, while lobule VI may play a role in the later stages of cognitive decline.’ should have read ‘The PD-MCI group also showed significantly higher glucose metabolism than the PD-NC group.’ and the text “longer education years” should have read “shorter education years”. The original article has been updated.