THE 180-DEGREE CLINICAL CHAIR ROTATION TEST IN NORMAL SUBJECTS AND PATIENTS WITH VARIOUS PERIPHERAL VESTIBULAR ABNORMALITIES

Background:Rotary chair testing (ROT) is the gold standard assessment for horizontal semicircular canal (SCC) function, particularly in cases of suspected bilateral vestibular hypofunction.[1,2] Despite sensitivity (0.747) and specificity (0.634) for peripheral vestibulopathy, its clinical adoption remains limited by cost and spatial requirements. A clinic-based 180-degree chair rotation test, coupled with video-oculography (VOG), offers an accessible alternative for assessing vestibulo-ocular reflex (VOR) function across the full spectrum of peripheral vestibular disorders. Objective:To assess the utility of the 180-degree clinical chair rotation test in characterizing per-rotatory nystagmus, post-rotatory nystagmus, and VOR suppression in healthy normal subjects and in patients with diagnosed peripheral vestibular abnormalities, including vestibular migraine (VM), benign paroxysmal positional vertigo (BPPV), and Menieres disease.