Table 4.

Vestibular testing of horizontal canal (caloric testing), saccular [cervical ocular evoked myogenic potentials (cVEMP)], and utricular [ocular evoked myogenic potentials (oVEMP)] function as well as subjective impairment, measured by the Dizziness Handicap Inventory (DHI), before and 3 months after surgical intervention.

P	Caloric						cVEMP						oVEMP						DHI
	Before			After 3 months			Before			After 3 months			Before			After 3 months			Before				After 3 months
	Max. SPV (°/s)		AR (%)	Max. SPV (°/s)		AR (%)	Max. Amp. (µV)		AR (%)	Max. Amp. (µV)		AR (%)	Max. Amp. (µV)		AR (%)	Max. Amp. (µV)		AR (%)
	r	l		r	l		r	l		r	l		r	l		r	l		p	e	f	t	p	e	f	t
1	14	14	2	13	14	2	nr	nr	nr	95	163	26	28	29	2	144	116	11	6	22	26	54	2	0	2	4
2	3	11	54	7	21	50	442	268	25	33	31	3	39	29	15	md	md	md	0	0	0	0	0	0	0	0
3	15	8	28	14	11	13	69	83	9	33	39	8	27	26	2	10	12	9	0	0	0	0	0	0	0	0
4	22	19	10	20	29	19	84	57	19	89	150	26	31	18	27	53	62	8	0	0	0	0	0	0	0	0
5	23	28	10	md	md	md	38	50	14	md	md	md	45	32	17	md	md	md	0	0	0	0	0	0	0	0
6	md	md	md	md	md	md	md	md	md	30	27	5	md	md	md	50	54	4	24	24	22	70	0	0	0	0
7	15	8	32	19	5	57	61	118	32	28	54	32	9	9	0	6	3	33	6	12	10	28	6	8	8	22
8	37	38	1	41	41	1	md	md	md	53	md	md	md	md	md	md	md	md	md	md	md	md	md	md	md	md
9	13	11	7	4	8	34	144	67	36	35	32	4	43	27	23	19	19	0	4	0	0	4	6	14	10	30
10	36	28	13	37	28	15	294	215	16	96	121	12	17	7	42	md	md	md	0	0	0	0	0	0	0	0

Pathological values as described in the Section “Materials and Methods” have a gray background.

P, patient number; Max. SPV, maximal slow phase velocity; AR, asymmetry ratio; r, right; l, left; p, physical subscale of the DHI; e, emotional subscale of the DHI; f, functional subscale of the DHI; t, total DHI; md, missing data; nr, not reproducible.