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Journal of the Korean Academy of Rehabilitation Medicine 1996;20(4):27.
Brainstem Auditory Evoked Potentials Recorded from Nasopharyngeal Wall
Yoon Kyoo Kang, M.D., Seong Bom Pyun, M.D. , Han Young Jung, M.D.*
Department of Rehabilitation Medicine, Korea University and *Inha University College of Medicine
비인두후벽 기록법을 이용한 뇌간청각유발전위검사
강윤규, 편성범, 정한영*
고려대학교, 인하대학교* 의과대학 재활의학과

Brainstem auditory evoked potential study was performed in 20 healthy young adults with earlobe recording and nasopharyngeal wall recording techniques. The peak latency, interpeak latency and amplitudes of five waves were evaluated to compare the clinical usability of the two methods and to understand the relationship between the waves and generator sources. Active electrode was placed at the ipsilateral earlobe with silver-silver chloride surface, disk electrode in earlobe recording technique. For nasopharyngeal wall recording, we designed specific recording electrodes which are made of silver bulb (diameter 2.5mm) with 10cm extended insulated lead. The tip of the recording electrode is placed at the nasopharyngeal wall through nasal cavity to approach anatomically closer site from the generator sources, brainstem. The reference electrode was placed at Fz in both methods. Nasopharyngeal wall recording reveals longer peak V latency, larger amplitude in peak II and IV, and smaller amplitude in peak III than ear-lobe recording (p<0.05). The difference may be originated from the change of anatomical and spatial orientation between active electrode and potential generator sources.

Key Words: Brainstem auditory evoked potantial, Nasopharyngeal recording


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