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Updated: May 23, 2025

A Method to Study Adaptation to Left-Right Reversed Audition
Published on: October 29, 2018
Exploring the Amplitudes of Binaural Interaction Components Elicited by Diverse Stimuli and Their Relationships With
1Department of Communication Science and Disorders, Grand Valley State University, Allendale, MI, USA.
Background And Objectives:
This study was performed to comprehensively examine the amplitudes of the binaural interaction components (BICs) elicited by chirps, clicks, and 500 Hz tone-burst stimuli in individuals with normal hearing. Electrophysiological evidence of BICs was obtained and assessed for correlations with interaural time difference (ITD) and interaural level difference (ILD).
Subjects And Methods:
Sixteen adults (4 males and 12 females) with normal hearing participated in this study. Auditory brainstem responses (ABRs) to chirp, click, and 500 Hz tone-burst stimuli were recorded, and BICs were derived based on wave V. The behavioral thresholds of ITDs and ILDs across multiple frequencies were obtained and analyzed.
Results:
BICs were found in most participants, regardless of stimulus type. The amplitudes of BICs elicited by chirps were the highest, followed by those elicited by clicks and 500 Hz tone-bursts. A significant correlation was found between the amplitudes of chirp-evoked BICs and the thresholds of 500 Hz ITDs and ILDs.
Conclusions:
This study found that chirp stimuli may be effective in eliciting BIC and predicting behavioral binaural interaction processing at low frequencies.
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