No abstract

It was confirmed that the substances injected into the facial nerve through the stylomastoid foramen, reached every part of the inner ear. In sensitized animals, by repeated provocative injections of antigen, acute reversible episodes, very similar to that of Ménière’s disease, were observed. The injection of various solutions and the provocative injection into the sensitized animals, resulted in completely opposite reactions. In sensitized animals, the electrophysiological phenomena of the cochlea also showed fluctuations like Ménière’s disease.

No abstract

Auditory nerve action potentials (AP N1) and summating potentials (SP) which were evoked by sound stimuli were investigated at the first attendance on twenty patients of sudden deafness.A recording was performed by use of the transtympanic needle electrode technique, that is, needle electrode was placed on the promontry through the tympanic membrane and average responses were recorded by a computer.Sound stimulus used was the sine wave of one cycle (duration 0.25msec). This type of stimulus was similar to the click in analysis using sound spectrogram.

No abstract