PURPOSE To determine cortical influence on the efferent medial olivocochlear bundle system. RESEARCH DESIGN The effects of attention on contralateral suppression (CS) of click-evoked otoacoustic emissions were measured. STUDY SAMPLE Fifteen normal-hearing listeners. RESULTS CS was greatest in the nonattending condition and decreased significantly when attending to the click or broadband n...

OBJECTIVE Auditory processing difficulties have been reported in schizophrenia. This study explores peripheral auditory function in patients with schizophrenia in whom certain early disturbances of auditory message filtering have been found and may be associated with certain abnormalities which are particularly localised in the left temporal lobe. METHODS Otoacoustic emissions, including clic...

OBJECTIVES The aim of this study was to investigate hearing and outer cells function in patients with psoriatic arthritis. Our investigation was a prospective case control study. METHODS A total of 31 psoriatic arthritis patients (62 ears) and 31 healthy control subjects (62 ears) were enrolled in the study. We investigated hearing changes of patients and controls via pure tone audiometry, sp...

UNLABELLED This study aimed at describing and analyzing tympanometric results obtained with 226 Hz and 1000 Hz probe tones; checking for correlations between tympanometry, otoacoustic emissions and otoscopic examination; describing abnormal results found in the evaluation procedures. METHODS Double-blind and prospective study. Our sample included 70 babies, between 7 days and one month and 13...

OBJECTIVE Otoacoustic emissions and the speech-evoked auditory brainstem response are objective indices of peripheral auditory physiology that are used clinically for assessing hearing function. While each measure has been extensively explored, their interdependence and the relationships between them remain relatively unexplored. METHODS Distortion product otoacoustic emissions (DPOAEs) and s...

OBJECTIVE To compare the cost effectiveness of various strategies for neonatal hearing screening by estimating the cost per hearing impaired child detected. DESIGN Cost analyses with a simulation model, including a multivariate sensitivity analysis. Comparisons of the cost per child detected were made for: screening method (automated auditory brainstem response or otoacoustic emissions); numb...

PURPOSE To analyze the findings for Evoked Otoacoustic Emissions (EOEA) and suppression effect in workers with normal hearing exposed to pesticides and noise . METHODS The sample consisted of 55 participants with normal hearing, with ages ranging from 18 to 35 years, divided into two groups: one group exposed to noise and pesticides (GRA) and a control group (CG). The GRA was composed of 25 p...

INTRODUCTION Alström Syndrome is a rare disease caused by mutations in ALMS1 gene. It is characterized by a progressive degeneration of sensory functions, resulting in visual and audiological impairment, as well as metabolic disturbances such as childhood obesity, hyperinsulinemia, and diabetes mellitus type 2. OBJECTIVE To report and discuss the genetic and audiological findings in two sibli...

We have measured the changes in transient otoacoustic emissions (TEOAEs) and distortion product otoacoustic emissions (DPOAEs) during and after ototoxic amikacin treatment in an animal (chinchilla) model. TEOAE and DPOAE were recorded from 6 adult chinchillas over a 6-week time course starting just before a 5-day or 7-day treatment period with amikacin sulphate (400 mg/kg/day, i.m.). After fina...

Introduction Analysis of the suppression effect is a simple method to evaluate cochlear status and central auditory mechanisms and, more specifically, the medial olivocochlear system. This structure may be involved in the generation of mechanisms that cause tinnitus and in the pathophysiology of tinnitus in patients with tinnitus and normal hearing. Objective To review the literature of the eti...