iChirp-evoked auditory brainstem responses (ABRs) yield a larger wave V amplitude at low intensity levels than traditional broadband click stimuli, providing a reliable estimation of hearing sensitivity. However, advantages of iChirp stimulation at high intensity levels are unknown. We tested to see if high-intensity (i.e., 85 dBnHL) iChirp stimulation results in larger and more reliable ABR wa...

Objective: There are various known hormone-related effects on audiometric thresholds and other auditory measures; however, research is scarce and mixed on the effect of pregnancy on the early-, mid-, and late-latency auditory evoked responses in a longitudinal fashion. Of clinical importance is to know whether electrophysiologic measures during pregnancy may further alter the results of, or mas...

OBJECTIVE To assess the value of brainstem auditory evoked potentials and event related evoked potential (3rd positive component of evoked related potentials with latency of 300 millisecond, in evaluating cognitive dysfunction in patients with chronic respiratory failure. METHODS Thirty-two patients with chronic obstructive pulmonary disease and respiratory failure of mild to moderate severit...

Hemifacial spasm (HFS) is due to the vascular compression of facial nerve at its root exit zone (REZ). Microvascular decompression (MVD) near REZ an effective and curative treatment for HFS. Since cochlear lies directly adjacent nerve, postoperative hearing loss frequently occurs during MVD surgery However, rate has decreased since introducing intraoperative neurophysiologic monitoring (IONM) b...