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  • Title: [Evoked brain stem potentials. Study of their adaptation in multiple sclerosis].
    Author: Soudant J, Frachet B, Pialoux P, Delaporte P, Salma J.
    Journal: Ann Otolaryngol Chir Cervicofac; 1978 Sep; 95(9):559-68. PubMed ID: 747285.
    Abstract:
    This study of the Brainstem evoked Response has been done to try to find the exact location of neurologic disorders. The authors wanted to see if there were differences between normal subjects and patients with multilocular sclerosis, when the auditory stimulus in increasing from 10 pps to 50 pps. From 15 normal subjects (30 ears) the results have been compared to those obtained from 6 patients. The findings were: -- there is no adaptation phenomenon in the Brainstem (the conduction time in the Brainstem is absolutely constant). -- there is an adaptation which occurs before the first peak, happening later at 50 pps than at 10 pps. -- in the multilocular sclerosis the findings were: augmentation of the peak to peak delay no synchronisation of the peaks so that is very difficult to recognize each peaks. And the peaks are easier to recognize at 50 pps than at 10 pps which fact unexpectable. This dyssynchronisation at the compression and rarefaction click is for the authors an important factor for the multilocular sclerosis diagnosis.
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