Table 2.

Average number of responses for each condition per group during fMRI

	PD-MCI (N = 13)	PD-NC (N = 24)	Non-PD (N = 20)	p-value	Post-hoc analysis
Automatica	13.01(3.49)	15.53(5.52)	14.03(4.01)	ns
Semanticb	5.09 (0.73)	6.21(0.92)	6.21(1.25)	0.003	PD-MCI < PD-NC**, PD-MCI < Non-PD**
Semantic Switchingb	2.40(1.08)	3.49 (1.03)	4.07(1.24)	0.001	PD-MCI < PD-NC*, PD-MCI < Non-PD**

^aANOVA (Analysis of Variance) Test; ^bKruskal-Wallis H Test

Table of average number of responses (SD) for automatic, semantic, semantic switching during the semantic fluency fMRI task for 15s. Statistically significant results for post-hoc analysis are indicated as * p < 0.05, ** p < 0.01, *** p < 0.001. Note. PD-MCI = Parkinson’s disease participants with mild cognitive impairment; PD-NC = Parkinson’s disease participants with no cognitive impairment; Non-PD = control participants without PD