The Journal of International
Advanced Otology
Original Article

Binaural Interaction Component in Speech Evoked Auditory Brainstem Responses


Department of Audiology, All India Institute of Speech and Hearing, Mysore, Karnataka, India


Kasturba Medical College, Mangalore, Manipal University, Manipal, Audiology and Speech Language Pathology, Karnataka, India.

J Int Adv Otol 2015; 11: 114-117
DOI: 10.5152/iao.2015.426
Read: 1871 Downloads: 866 Published: 03 September 2019


OBJECTIVE: This article aims to describe the characteristics of the binaural interaction component (BIC) of speech-evoked auditory brainstem response (ABR).


MATERIALS and METHODS: All 15 subjects had normal peripheral hearing sensitivity. ABRs were elicited by speech stimulus /da/.


RESULTS: The first BIC (BIC-SP1) in the speech-evoked ABR occurred at around 6 ms in the region of peak V. The second BIC (BIC-SP2) was present around 8 ms in the latency region of peak A. The third and fourth BICs of speech-evoked ABR (BIC-SP3 & BIC-SP4) were observed at around 36 ms and 46 ms, respectively, in the latency regions of peaks E and F, respectively. BIC-SP1 and BIC-SP2 were present in all subjects tested (100%), whereas BIC-SP3 and BIC-SP4 were present in 11 (73%).



CONCLUSION: Because ABRs are not affected by sleep and mature early, this tool can be evaluated in identifying binaural interaction in younger and difficult-to-test populations.

EISSN 2148-3817