Modifications of the stapedius muscle reflex under spontaneous and experimental brain-stem impairment.
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.
D000293:Adolescent; D000328:Adult; D001309:Auditory Threshold; D001927:Brain Diseases / Q000175:diagnosis / Q000503:physiopathology*; D001932:Brain Neoplasms / Q000503:physiopathology; D001933:Brain Stem / Q000502:physiology / Q000503:physiopathology*; D002490:Central Nervous System / Q000187:drug effects; D003864:Depression, Chemical; D004429:Ear Ossicles / Q000503:physiopathology*; D006320:Hearing Tests; D006801:Humans; D009132:Muscles / Q000502:physiology / Q000503:physiopathology*; D009759:Nystagmus, Pathologic / Q000503:physiopathology; D010040:Otosclerosis / Q000503:physiopathology; D010424:Pentobarbital / Q000633:toxicity; D012018:Reflex; D013199:Stapes / Q000502:physiology / Q000503:physiopathology*
D010424:Pentobarbital