Table 1. Means (±SD) peak-to-peak amplitude of cVEMPs induced by AC STB and clicks, and mean (±SD) peak-to-peak amplitude of oVEMPs induced by AC STB and BCV (AFz and mastoid), in healthy subjects, 63 patients with non-operated VS (affected and intact side) and 20 patients after surgery for VS (intact side).

VEMP tests	Stimulation	Healthy subjects	Non-operated VS affected side	Non-operated VS intact side	Operated VS intact side
cVEMP amplitudes (µV)	AC STB P13/N23	324±158	93±136*	265±158 n = 60	228±122
	AC clicks P13/N23	138±63	36±68*	141±87 n = 41	109±48
oVEMP amplitudes (µV)	AC STB n1/p1	6.6±3.5	2.1±3.8*	7.0±4.0 n = 37	5.3±4.8
	AFz BCV n1/p1	10.1±6.2	2.9±4.7*	9.8±7.6 n = 50	8.1±3.3
	Mastoid BCV n1/p1	16.2±9.9	6.0±9.2*	13.8±10.1 n = 60	10.8±5.3

*Significantly different to healthy subjects (t-test).

VS: vestibular schwanomma.

VEMPs: vestibular evoked myogenic potentials.

cVEMPs: cervical VEMPs.

oVEMPs: ocular VEMPs.

AC: air-conducted.

BCV: bone-conducted vibration.

STB: short-tone bursts.