TABLE 2.

DVA in subjects with unilateral vestibular pathology

Vestibular athology	Ipsilesional yaw	Contralesional yaw	Yaw difference	Ipsilesional roll	Contralesional roll	Roll difference	Pitch up	Pitch down	Pitch difference	Glasses?
Left UVH	0.865	0.488	0.377	0.508	0.544	0.036	0.721	0.721	0.000	Yes
Left UVD	0.720	0.421	0.299	0.519	0.350	0.169	0.576	0.519	0.057	No
Left UVD	0.559	0.333	0.226	0.285	0.308	0.023	0.582	0.426	0.156	Yes
Right UVD	0.450	0.508	0.058	0.327	0.372	0.045	0.414	0.414	0.000	Yes
Mean	0.649	0.438	0.240	0.41	0.394	0.068	0.573	0.520	0.053
SD	0.182	0.079	0.136	0.12	0.103	0.068	0.126	0.142	0.074

The DVA during passive head impulses is significantly different based on plane of head rotation (p = 0.04). The DVA within planar head rotations (i.e., up vs. down) is more asymmetric for yaw than DVA in either roll or pitch. Difference column shows difference in DVA within cardinal planes

UVH unilateral vestibular hypofunction, UVD unilateral vestibular deafferentation surgery due to vestibular schwannoma