Modifications of the Stapedius Muscle Reflex Under Spontaneous and Experimental Brain-Stem Impairment

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Abstract
An oscilloscopic plus a graphic method of recording of the stapedius muscle reflex has revealed peculiar modifications in the latency, threshold, and shape of development of the reflex in cases of brain-stem impairment. Many subjects have been examined who were affected by nucleo-reticular vestibular syndrome, vascular insufficiency, disseminated sclerosis, tumours, etc. and a comparison has also been made in normal subjects and in the same subjects during a temporary impairment of the brain-stem structures following barbiturate administration. The greatest semeiological value is attributed to the modifications in the shape of the reflex.