Table 2. Subject Baseline and Follow-up Tic Severity.

Subject	YGTSS1 motor	YGTSS1 vocal	YGTSS1 total tic	YGTSS1 tic impairment	YGTSS1 total	YGTSS2 motor	YGTSS2 vocal	YGTSS2 total tic	YGTSS2 tic impairment	YGTSS2 total
1	21	21	42	30	72	23	13	36	20	56
2	21	14	35	30	65	11	14	25	30	55
3	18	9	27	20	47	12	9	21	20	41
4	12	11	23	20	43	4	0	4	10	14
5	18	10	28	30	58	17	6	23	10	33
6	13	11	24	10	34	20	13	33	25	58
7	12	10	22	20	42	15	12	27	5	32
8	20	22	42	40	82	13	10	23	20	43
9	13	17	30	30	60	7	6	13	0	13
10	12	8	20	10	30	7	3	10	10	20

Abbreviations: YGTSS1, Baseline Yale Brown Global Tourette Syndrome Scale; YGTSS2, Follow-up YGTSS scores at the time of MRI.