Difference of Cervical Vestibular Evoked Myogenic Potentials between Bone-Conduction and Air-Conduction in Patients with Nonspecific Dizziness

Objectives: This study was performed to evaluate the difference of cervical vestibular evoked myogenic potentials (cVEMP) stimulated by bone-conduction (BC) and air-conduction (AC) in patients with nonspecific dizziness.Methods: Twenty-eight dizzy (56 ears) 15 subjects (30 as normal control enrolled. Responses BC- AC-cVEMP were recorded sequentially both groups. cVEMP parameters including latencies, inter-latencies intervals, amplitudes, interaural amplitude asymmetry analyzed compared.Results: Among dizziness, responses clearly detected all 56 ears while BC-cVEMP 32 (57.1%). Amplitudes significantly smaller than those response. There no ratios between AC-cVEMP. significant BCand groups.Conclusions: is not clinically useful comparison for evaluation dizziness. An effective stimulation tool BC necessary provoke more reliable BC-cVEMP.