Please use this identifier to cite or link to this item:
Title: Assessment of hearing threshold in adults with hearing loss using an automated system of cortical auditory evoked potential detection
Other Titles: Estimativa do limiar auditivo em adultos com perda auditiva por meio de um sistema automatizado de detecção do potencial evocado auditivo cortical
Authors: Durante, Alessandra Spada
Wieselberg, Margarita Bernal
Roque, Nayara
Carvalho, Sheila
Pucci, Beatriz
Gudayol, Nicolly
Almeida, Kátia de
Keywords: Auditory evoked potentials
Auditory perception
Hearing aids
Hearing loss
Issue Date: Apr-2017
Publisher: Brazilian Journal of Otorhinolaryngology
Brazilian Association of Otolaryngology and Cervicofacial Surgery
Citation: Durante AS, Wieselberg MB, Roque N, Carvalho S, Pucci B, Gudayol N, Almeida K. Assessment of hearing threshold in adults with hearing loss using an automated system of cortical auditory evoked potential detection. Braz J Otorhinolaryngol. 2017; 83(2):147-54.
Abstract: INTRODUCTION: The use of hearing aids by individuals with hearing loss brings a better quality of life. Access to and benefit from these devices may be compromised in patients who present difficulties or limitations in traditional behavioral audiological evaluation, such as newborns and small children, individuals with auditory neuropathy spectrum, autism, and intellectual deficits, and in adults and the elderly with dementia. These populations (or individuals) are unable to undergo a behavioral assessment, and generate a growing demand for objective methods to assess hearing. Cortical auditory evoked potentials have been used for decades to estimate hearing thresholds. Current technological advances have lead to the development of equipment that allows their clinical use, with features that enable greater accuracy, sensitivity, and specificity, and the possibility of automated detection, analysis, and recording of cortical responses. OBJECTIVE: To determine and correlate behavioral auditory thresholds with cortical auditory thresholds obtained from an automated response analysis technique. METHODS: The study included 52 adults, divided into two groups: 21 adults with moderate to severe hearing loss (study group); and 31 adults with normal hearing (control group). An automated system of detection, analysis, and recording of cortical responses (HEARLab®) was used to record the behavioral and cortical thresholds. The subjects remained awake in an acoustically treated environment. Altogether, 150 tone bursts at 500, 1000, 2000, and 4000Hz were presented through insert earphones in descending-ascending intensity. The lowest level at which the subject detected the sound stimulus was defined as the behavioral (hearing) threshold (BT). The lowest level at which a cortical response was observed was defined as the cortical electrophysiological threshold. These two responses were correlated using linear regression. RESULTS: The cortical electrophysiological threshold was, on average, 7.8dB higher than the behavioral for the group with hearing loss and, on average, 14.5dB higher for the group without hearing loss for all studied frequencies. CONCLUSION: The cortical electrophysiological thresholds obtained with the use of an automated response detection system were highly correlated with behavioral thresholds in the group of individuals with hearing loss.
ISSN: 1808-8694
Appears in Collections:Artigos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.