[The audioanalysator. A bridge between audiometry and psychoacoustics].

An analyser with a system of continous sweeping frequencies and a spectrum of strongly different control signals is described here. Including the active participation of the patient and his impaired hearing a much more accurate finding of symptoms is possible than with the standard methods of audiometry. The major factors mentioned include the continuous fine testing of the sounds heard in an unlimitated choice of frequencies ranging between 20 Hz.

Cholesteatoma. Etiology, nosology and tympanoplasty.

After more than 25 years of tympanoplasty for cholesteatomata, it is time to reconsider the origin of this pathological finding. The pathogenesis has not changed, it is the aspects of the disease which have shifted. There are two reasons for this: (a) much improved conditions of living, housing, nutrition and epidemiology, especially during childhood, and (b) discontinuation of the indication for radical surgery, only in the case of threatening complications is tympanoplasty used as a prophylactic operation.