[The meaning of nonlinear distortions in the internal ear for acoustic and ultrasonic stimuli].

A comparative study of nonlinear distortion of microphonic potentials in the rabbit cochlear at the air and bone conduction showed equal values for the air as well as for the within the ultrasonic frequency range did not exceed the hearing spectrum values. The hearing response to ultrasonic stimuli was found not to be due to formation of overtones of ower frequencies but to represent rather the direct cochlear response.