Table 1. Demographic and neuropsychological data (mean ± standard deviation) for the Parkinson's disease patients group and the group of healthy control participants.

	PD PATIENT GROUP	HEALTHY CONTROL GROUP
	(N = 13)	(N = 11)
AGE [YEARS]	60.46±8.88	60.09±5.17
YEARS OF FORMAL EDUCATION	13.73±2.67	14.41±3.43
MINI MENTAL STATE EXAMINATION	29.46±0.97	29.55±0.59
BECK DEPRESSION INVENTORY	3.08±2.36	3.00±3.19