Table 4

Associations between grey matter volume and cognitive functions across all Parkinson's disease (PD) subjects

Cognitive domains	Left insular			Left middle temporal gyrus			Left superior frontal gyrus
Cognitive domains	Adjusted R²	p Value	β	Adjusted R²	p Value	β	Adjusted R²	p Value	β
Executive function	0.331	0.001	0.377	0.290	0.014	0.278	0.257	0.117	0.167
Attention	0.289	0.006	0.329	0.275	0.013	0.286	0.266	0.022	0.245
Memory	0.119	0.052	0.249	0.143	0.015	0.300	0.110	0.084	0.201
Language	0.195	0.068	0.225	0.175	0.239	0.141	0.175	0.230	0.134
Visuospatial	0.054	0.079	0.233	0.071	0.034	0.271	0.958	0.015	0.006