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Quelques charactéristiques singulières de la submicroscopie de la paro-tide humaine normale et quelques aspects peu communs de la phatolo-gique néoplastique parotidienne sont présentés. Les données de micro-scopie optique sont comparés avec celles de la microscopie électron-ique.
Rotational tests carried out upon a number of ballet dancers have shown their nystagmic threshold responses to angular acceleration to be normal when determined in darkness, but considerably raised in the presence of optic fixation. These results indicate that optic fixation plays an important...
Total protein values were determined from the perilymph of 47 cadaver ears. After subtraction of hemoglobin the average total protein for two series of 27 and 10 ears was 553 and 559 mg%, respectively. When the perilymph specimens were taken directly without freezing the average total protein...
Die Schlagfrequenz des postkalorischen Nystagmus I, welche aussage-kräftiger ist als die Dauer, wird in dieser Arbeit zur Beurteilung des geprüften Vestibularorganes dergestalt benutzt, daß aus der Schlagrate während des 30-Sekunden-Bereiches maximaler Schlagfrequenz ein Kenn-linienzeiger...
X-ray irradiation in single doses was applied to the inner ear of guinea pigs. The organ of Corti and the vestibular end organs were examined by light microscopy using the surface specimen technique proposed by Engstrom. A characteristic pattern of degeneration was found. The outer hair cells of...
Patients with unilateral perceptive hearing loss have been examined to determine whether masking of the good ear influences the difference limen of intensity. The measurements were carried out with the aid of the SISI procedure using increments of different magnitudes, until the psychometric...
In order to be able to detect in the simplest possible manner and in part also to analyse the changed direction of nystagmus, three derivations for recording nystagmus have been introduced. Three bipolar leads are connected to three electrodes. The magnitude of the electric effect in one...
Na-K-activated ATPase was determined in the cochlear structures by ultramicro-analytical methods. The highest activity was found in the stria vascularis, with a decrease from base to apex. Ouabain, which inhibits the isolated enzyme system, appeared to diminish the CMP and + EP to the same...
The effect of intratympanic application of streptomycin and parenteral injections of kanamycin upon the vestibular sensory epithelia have been studied with the surface specimen technique. Clear regional differences in vulnerability to these ototoxic antibiotics have been noticed. The sensory...
New experimental research is presented on the determination of the parameters of stimulation and of measurement of the vestibular responses recorded by ENG, with special mention of a procedure allowing the checking of the accuracy of the stimulating devices.
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