Journal of Phonetics & Audiology
Open Access

Abstract

Effect of Visual Attention on Efferent Auditory System in Young Adults

Srinivas Rao, Samanthan Prabhu* , Vishnuram

Introduction: The efferent auditory system is important for localization of sound source, auditory attention, protection of cochlea and speech perception.

Aim of the study: The present study attempted to find out the effect of different visual attention on efferent auditory system. Subjects: Twenty young normal hearing adults were (Age range 18-35, Male-10, Female-10) participated in this study. Methodology: Baseline DPOAE was recorded in all individuals. CS-DPOAE was recorded with 50 dB contra lateral white noise in three different visual conditions such as active attention, passive attention and closed eyes. The visual attention stimulus was delivered through brain workshop software. Amount of suppression values was compared among three different conditions across all the frequencies.

Results: Result of higher amount of suppression in all the frequencies in active visual attention indicates higher efferent system activity than other two conditions. Conclusion: We conclude that the efferent system activity was higher during active visual attention so clinical CSOAE recording in closed conditions eliminate these attention effects.

Keywords: Visual Attention; Efferent Auditory System; Oto-Acoustic Emission (OAE); Contralateral Suppression of Oto-Acoustic Emission(CSOAE); Distortion Product Oto-Acoustic Emission (DPOAE).

Published Date: 2020-04-17; Received Date: 2020-03-28