title: Modifications of the nonlinearity of the cochlear microphonic responses produced by noise exposure in the guinea pig.
abstract: Cochlear microphonics (CM) were recorded with differential electrodes from several locations in the guinea pig cochlea. Input-output curves and amplitude-frequency curves were plotted before and after short exposures to intense noise. In addition to amplitude losses, important changes in the intensity functions resulted in a decrease of the nonlinearity and in a modification of the frequency response. The mechanisms producing these alterations are discussed.
mesh_terms: D000818:Animals; D001237:Asphyxia / Q000503:physiopathology; D001305:Auditory Fatigue / Q000502:physiology; D003051:Cochlea / Q000503:physiopathology; D003055:Cochlear Microphonic Potentials; D005072:Evoked Potentials, Auditory; D006168:Guinea Pigs; D006317:Hearing Loss, Noise-Induced / Q000503:physiopathology; D009622:Noise / Q000009:adverse effects*; D013997:Time Factors