TABLE 3.

Descriptive Statistics for the Readiness Potential Peak Amplitude and Latency for All Groups

Type of Responses	ERP Measures	Replications	Control				Habit Disorder				Chronic Tic Disorder
			Mean	SE	Min	Max	Mean	SE	Min	Max	Mean	SE	Min	Max
Automated	Amplitude	1	−7.37	2.51	−12.45	−2.30	−9.53	2.28	−14.14	−4.93	−2.90	2.61	−8.16	2.37
		2	−10.18	2.38	−14.99	−5.37	−5.35	2.16	−9.72	−0.98	−5.71	2.47	−10.71	−0.72
	Latency	1	−185.27	18.26	−222.15	−148.39	−159.49	16.57	−192.95	−126.02	−170.48	18.95	−208.75	−132.21
		2	−177.50	17.78	−213.41	−141.59	−173.97	16.13	−206.55	−141.39	−163.46	18.45	−200.72	−126.20
Controlled	Amplitude	1	−8.32	2.10	−12.55	−4.08	−4.66	1.90	−8.51	−0.82	−3.87	2.18	−8.27	0.53
		2	−6.69	2.40	−11.53	−1.85	−6.10	2.18	−10.50	−1.71	−4.31	2.49	−9.33	0.72
	Latency	1	−203.30	16.62	−236.87	−169.73	−152.87	15.08	−183.33	−122.40	−166.63	17.25	−201.47	−131.80
		2	−177.77	11.92	−201.84	−153.70	−177.56	10.82	−199.41	−155.72	−159.04	12.37	−184.02	−134.06

SE, standard error of the mean; min, minimum; Max, maximum.