頭皮上及び硬膜上より誘導した脳波聴性反応の観察

概要

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In five subjects with chronic otitis media or middle ear anomaly, a silver-ball electrode was inserted in the extradural space through the temporal bone in the middle ear surgery, and auditory evoked responses from the extradural electrode were observed by an average response computer.In spite of remarkable individual difference the typical waveform consisted of three or four components of which the first one appeared at the latency of appreximately 4050 msec. and its full time course amounted to 250 msec.The amplitude of the extradural responses showed five to six times as much as the response simultaneously recorded on the scalp.The features of the extradural responses were discussed from the previous works in depth electroencephalography.
社団法人日本耳鼻咽喉科学会の論文