Temporal resolution in children: comparing normal hearing, conductive hearing loss and auditory processing disorder

Sheila Andreoli Balen,Letícia Bretzke,Carla Meller Mottecy,Graziela Liebel,Mirian Regina Moresco Boeno,Lys Maria Allenstein Gondim

doi:10.1016/s1808-8694(15)30843-0

Sheila Andreoli Balen, Letícia Bretzke + Show 4 more

Open Access

https://doi.org/10.1016/s1808-8694(15)30843-0

Copy DOI

Abstract

SummaryTemporal resolution is essential to speech acoustic perception. It may be altered in subjects with auditory disorders, thus impairing the development of spoken and written language. Aim: The goal was to compare temporal resolution of children with normal hearing, with those bearing conductive hearing loss and auditory processing disorders. Materials and methods: The sample had 31 children, between 7 and 10 years of age, broken down into three groups: G1: 12 subjects with normal hearing; G2: 7 with conductive hearing loss and G3: 12 subjects with auditory processing disorders. This study was clinical and experimental. Selection procedures were: a questionnaire to be answered by the parents/guardians, audiologic and hearing processing evaluation. The study procedure was the test to detect breaks in silence at 50 dB HL above the mean values of 500, 1000 and 2000 Hz in both ears in 500, 1000, 2000 and 4000 Hz. To analyze the data we used the Wilcoxon Test with a 1% significance level. Results: We noticed a difference between G1 and G2 and between G1 and G3 in all the frequencies. On the other hand, this difference was not seen between G2 and G3. Conclusion: conductive hearing loss and auditory processing disorders can impact break detection thresholds.

Highlights

In order for the communication process to be effective among individuals, the speaker must express him/herself properly and make it so that the listener can understand the message.In listening and decoding what is being said, we can observe the relationship between the peripheral auditory system integrity with the central auditory system
On table 1, we notice that the silence interval threshold of the sample studied varied from 0 to 30ms depending on the frequency tested, and the thresholds are similar in all the frequencies from Group 1 (G1)
The analysis of the results obtained from the RGDT varied according to the group in which the children were classified, there were evidences that the conductive alterations and the central auditory processing disorder generated silence interval detection thresholds above those from the normal group

Summary

Introduction

In order for the communication process to be effective among individuals, the speaker must express him/herself properly and make it so that the listener can understand the message.In listening and decoding what is being said, we can observe the relationship between the peripheral auditory system integrity with the central auditory system. In order for the communication process to be effective among individuals, the speaker must express him/herself properly and make it so that the listener can understand the message. In order to have an effective communication, auditory processing effectiveness is paramount[1]. Auditory processing is associated with what happens when the brain recognizes and interprets sounds[2]. The same thing is defined as the mechanism and process responsible for sound location and lateralization, hearing discrimination, auditory patterns recognition, temporal hearing aspects (temporal resolution, order and sequence), and hearing performance with competitive acoustic signals (including dichotic listening) 3. Auditory processing plays a fundamental role in speech and language development, and a deficit in some of these hearing skills can cause severe speech, reading and writing learning problems to the individual[4]

Objectives

Methods

Results

Discussion

Conclusion