INTRODUCTION Earlier studies have demonstrated an auditory effect of lead exposure in children, but information on the effects of low chronic exposures needs to be further elucidated. OBJECTIVE To investigate the effect of low chronic exposures of the auditory system in children with a history of low blood lead levels, using an auditory electrophysiological test. METHODS Contemporary cross-...

The aim of this paper is to evaluate the application of the discrete wavelet transform (DWT) and support vector machines (SVM) to transient evoked otoacoustic emissions (TEOAE) in order to achieve a detection of frequency-specific hearing loss (HL). We introduce a system to determine detection rates between groups of persons with normal hearing, high frequency hearing loss, and pantonal hearing...

Transient-Evoked Otoacoustic Emissions (TEOAEs) were studied, with particular reference to their subject-dependent features. To this end, an electric model of the ear was implemented and validated. Simulated and natural TEOAEs were analyzed through a nonlinear analysis technique. The simulated signals were able to reproduce the dynamical features of the experimentally observed TEOAEs and, most ...

Carbon monoxide poisoning is one of the rare causes of hearing loss which may cause reversible or irreversible, unilateral or bilateral hearing loss after acute or chronic exposure. In this report, we present a case of bilateral sensorineural hearing loss in a secondary smelting workshop worker after an acute exposure to carbon monoxide. This complication was diagnosed by pure-tone audiometry a...

In a retrospective case study of a patient with a right-sided cerebellopontine angle mass lesion, transient evoked otoacoustic emissions were robustly present despite a severe to profound sensorineural hearing loss and abnormal auditory brainstem response. These results were interpreted as suggestive of a neural site of lesion, and the potential for planned, preserved, or improved hearing by a ...

Early identification and management of hearing impairment is very valuable. The goal standard measurement of hearing loss is by brainstem evoked response (BSER). This prospective study was conducted in Hospital University Kebangsaan Malaysia (HUKM) to determine the sensitivity and specificity of transient evoked otoacoustic emission (TEOAE) as a screening tool for hearing impairment from Februa...

OBJECTIVE To evaluate the neuro-otological effects of gamma knife radiosurgery in patients with acoustic neurinoma. DESIGN Prospective study. SETTING University hospital in Milan, Italy. PATIENTS Thirty consecutive patients with acoustic neurinoma who underwent gamma knife radiosurgery. INTERVENTION Gamma knife radiosurgery. MAIN OUTCOME MEASURES Results of neuro-otological tests, inc...