Binaural interaction of bone-conducted auditory brainstem responses in children with congenital atresia of the external auditory canal.

Binaural interaction of bone-conducted auditory brainstem responses in children with congenital atresia of the external auditory canal.

Sheykholeslami Kianoush; Habiby Kermany Mohammad; Sebastein Schmerber; Kaga Kimitaka

International journal of pediatric otorhinolaryngology

2003

2003-10

Bilateral bone-conducted auditory brainstem responses (BC-ABRs) were recorded in children with atresia of the external auditory canal bilaterally (AECB) in order to compare the response characteristics to normal hearing adults. The binaural interaction component (BIC) of the ABR occurs when the sum of the monaural-evoked ABR amplitudes are different in amplitude when compared to the binaural-evoked ABR amplitude. Previous electrophysiological work from our lab has shown that children with AECB lateralize bone-conducted (BC) sound. Furthermore, we have found in normal-hearing adults that BICs exist using BC clicks. In adults, BC-BIC occurred in the latency region corresponding to waves IV-VI, whereas for children with AECB corresponding peak latencies occurred earlier. Same as normal-hearing adults, BC-ABR IV-V complex peak amplitudes for sum of the BC-monaural right and

Adolescent; Audiometry; Auditory; Bilateral/congenital/physiopathology; Bone Conduction/*physiology; Brain Stem/*physiology; Child; Conductive/congenital/physiopathology; Ear; Ear Canal/*abnormalities/physiopathology; Evoked Potentials; Evoked Response; Hearing Loss; Humans; Middle/abnormalities; Preschool; Pure-Tone; Temporal Bone/abnormalities

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1083–1090

10

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