Table 2

Saccade parameters

		Visually guided saccades				Antisaccades				Memory guided saccades
		Latency (ms) Mean (SD)	Gain Mean (SD)			Latency (ms) Mean (SD)	% Errors Mean (range)			Latency (ms) Mean (SD)	First gain Mean (SD)	Final gain Mean (SD)
Patients:				^2-150
STN on	201 (45)	0.95 (0.03)		347 (85)	6.6 (0–29)		385 (68)	0.91 (0.12)	0.95 (0.09)
				^2-160			^2-150	^2-164 ^2-150	^2-151 ^‡‡
STN off	220 (71)	0.94 (0.04)		382 (75)	7.7 (0–29)		406 (80)	0.77 (0.19)	0.87 (0.15)
Controls	180 (44)	0.94 (0.02)		278 (70)	7 (0–17)		332 (65)	0.91 (0.04)	0.92 (0.06)

Comparison with the control group:
↵2-150 p<0.05;
↵2-160 (p<0.01). Comparison between “STN on” and “STN off” conditions in PD patients:
↵2-151 p<0.05;
↵2-164 p<0.001. Comparison between the first gain and the final gain ^‡‡(p<0.01).