Fig. 2.
Correlation between the levels of plasma GFAP or NfL and the scores of cognitive scales in the PD group. Correlation between plasma GFAP levels and MMSE (a), ACE-R (b), MoCA-J (c), and FAB (d). Correlation between plasma NfL levels and MMSE (e), ACE-R (f), MoCA-J (g), and FAB (h). The Spearman’s rank correlation test was used to determine significant correlations. PD Parkinson’s disease, GFAP glial fibrillary acidic protein, NfL neurofilament light chain, MMSE Mini-Mental State Examination, ACE-R Addenbrooke’s Cognitive Examination-Revised, MoCA-J Japanese version of the Montreal Cognitive Assessment, FAB Frontal Assessment Battery