Multifrequency tympanometry. Preliminary experiences with a commercially available middle-ear analyzer.
Normal ears and ears affected by various pathologies were studied with a clinical middle-ear analyzer according to the multifrequency tympanometric concept, by which the resonance frequency of the tympanic membrane/middle-ear system can be determined. This frequency varies considerably in normal ears with a mean value close to 1 kHz. Ears with pathologies in the tympanic membrane and otosclerotic ears have resonance frequencies differing significantly from those of normal ears. The effects may be explained by considering mass and stiffness components.
Valvik
B R
BR
Department of Otorhinolaryngology, University of Tromsø, Norway.
Johnsen
M
M
Laukli
E
E
D000158:Acoustic Impedance Tests; D004432:Ear, Middle / Q000502:physiology* / Q000503:physiopathology* / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D010040:Otosclerosis / Q000175:diagnosis* / Q000503:physiopathology* / Q000601:surgery; D014432:Tympanic Membrane / Q000503:physiopathology / Q000601:surgery