Registration of spontaneous cochlear emissions by means of Fourier transformation.
Fourier transformation is a suitable procedure for the detection of spontaneous cochlear emissions. In the setup used, the microphone lies unsupported at the entrance to the external auditory canal; after amplification and optional filtering, the signal is processed digitally. The frequency distribution of the emissions is considerably narrow and shows alterations in frequency and intensity. Emissions seem to occur in slightly damaged cochleas.
D000293:Adolescent; D000328:Adult; D003055:Cochlear Microphonic Potentials; D003056:Cochlear Nerve / Q000503:physiopathology*; D005260:Female; D005583:Fourier Analysis; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology*; D006801:Humans; D008297:Male; D010898:Pitch Perception / Q000502:physiology*