title: [Evaluation of frequency selectivity from psychoacoustic tuning curves].
abstract: Psychoacoustic tuning curves (PTC) can be regarded as filter curves, whereas their forms represent hair cell activity. Different influences--for example, noise, toxins, pharmacological causes and age--can change the PTC as a consequence of changed frequency selectivity without indication of deterioration in the audiogram. The objective of this investigation was to determine the visually perceivable change in the PTC as a quantifiable result. In so doing, the PTC was transformed into a hyperbola characterized by a parameter Q5. An example demonstrates the temporal change of Q5 under the influence of pharmacological drugs.
authors.affiliation: Universitäts-HNO-Klinik Halle-Wittenberg.
authors.forename: H G
authors.initials: HG
authors.lastname: Demus
mesh_terms: D001309:Auditory Threshold / Q000502:physiology; D006198:Hair Cells, Auditory / Q000503:physiopathology*; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D008144:Loudness Perception / Q000502:physiology; D010897:Pitch Discrimination / Q000502:physiology*; D011571:Psychoacoustics; D012016:Reference Values
vernacular_title: Zur Bewertung des Frequenzselektionsvermögens aus psychoakustischen Tuningkurven.