The origin of combination tones
Abstract
By means of the electrical responses of the cochlea of the guinea pig, data were obtained which show, in general, a high degree of similarity in the combination tones produced by stimulation of the intact ear with aerial sounds and those produced by stimulation of the operated ear with a mechanical vibrator on the stapes. These findings and other considerations lead the authors to conclude that combination tone distortion occurs both in the middle ear and in the inner ear.