For people with chronic vestibular hypofunction, Szturm et al38 reported a reduction in aVOR gain asymmetry for 60/s but not for 120/s rotations. Context-specific short-term adaptation of the phase of the vestibulo-ocular reflex. Angular positions for eye and head with respect to space coordinates and eye with respect to head coordinates were represented by rotation vectors.25,26 Head-in-space, eye-inspace, and eye-in-head velocity vectors were calculated from the corresponding rotation vectors.27 Head velocity was calculated and reported with reference to a head-fixed, right-handed coordinate frame (superiorinferior axes correspond with yaw axes), so that eye-in-head and head velocities were expressed with reference to exactly the same coordinate frame.28. The dynamic visual acuity (DVA) of 52 college students was determined for three target velocities (60, 90, and 120 per sec) at each of two target durations and two luminance levels. Methods: Retrospective analysis of 323 cases with peripheral vestibular disorder, and analyzing the correlation between bedside DVA results and caloric test were performed.
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