Table III. Results of 3D VOG evaluation after vibration over mastoids in normal subjects.

				SPV, °/s*
Patient	Sex	Age (years)	Horizontal	Vertical	Torsional
1	M	17	-0.1/0.3	1.6/-1.2	0.6/-0.4
2	M	22	0.0/0.0	0.0/0.0	0.0/0.0
3	F	57	0.4/0.3	1.3/-1.2	1.2/-0.9
4	M	43	0.0/0.0	0.0/0.0	0.0/0.0
5	F	56	0.2/0.5	1.5/-1.7	0.7/-0.4
6	M	55	0.8/0.6	1.7/-1.3	0.5/-0.8
7	F	34	0.0/0.0	0.0/0.0	0.0/0.0
8	F	60	0.0/0.0	0.0/0.0	0.0/0.0
9	F	44	0.4/-0.3	1.6/-1.2	0.6/-0.4
10	M	42	0.3/0.4	1.2/-12.9	0.1/-0.5

*: SPV, °/s: slow phase velocity of nystagmus, degree per second.