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Distortion Generated by the Ear: Its Emergence and Evolution During Development
Author(s) -
Tubach Martin,
McGee JoAnn,
Walsh Edward J.
Publication year - 1996
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1097/00005537-199607000-00007
Subject(s) - intermodulation , cochlea , audiology , distortion (music) , transduction (biophysics) , tone (literature) , cochlear nerve , electrophysiology , acoustics , neuroscience , physics , biology , medicine , biophysics , art , amplifier , literature , optoelectronics , cmos
Physiologically vulnerable active mechanics associated with the transduction of sounds in adults distort cochlear output. Specifically, frequencies not present in the incoming acoustic signal are represented in its output ( i.e., the spike trains of auditory nerve fibers). The purpose of this investigation was to study the appearance and evolution of intermodulation distortion during development. Established surgical and electrophysiologic techniques were used to record the extracellular electrical activity of individual auditory nerve fibers from developing kittens. Discharge‐rate or synchrony‐based responses to two tones(f 1 and f 2 ) presented simultaneously at various ratios of f 2 /f 1 were recorded. The cubic distortion product (CDP; 2f 1 ‐f 2 , where f 1