Experimental Studies on Auditory Brainstem Evoked Responses of Acoustic Stimulus and Electrical Stimulus in Cat

Korean Journal of Otorhinolaryngology-Head and Neck Surgery > Volume 26(2); 1983 > Article

Korean Journal of Otorhinolaryngology-Head and Neck Surgery 1983;26(2): 226-31.

Kwan Taek Noh, MD¹, Jeong You Kim, MD¹, and Duk Hwan Lim, MS²

1;Department of Otolaryngology, College of Medicine, Seoul National University, 2;Department of Medical Engineering, Seoul National University Hospital, Korea

音刺戟과 電氣刺戟으로 인한 腦幹誘發反應에 대한 實驗的硏究

노관택¹ · 김정유¹ · 임덕환²

서울대학교 의과대학 이비인후과학교실1;서울대학교병원 의공학과2;

ABSTRACT

Brainstem electric responses to acoustic atimulus and conventional electrical stimulus of cochlear implant were compared in 5 cats. The acoustic stimuli were 2 KHz, 4 KHz, 6KHz logon and the electrical stimuli were the electrical current which elaborated the acoustic stimuli. Firstly we checked the brainstem electric responses of sound stimuli in anesthetized cat. And then we exposed round window and implanted active elecrode in scala tympani, reference electrode at neck muscle. We checked the brainstem responses of electrical stimuli. In five cats we observed that wave V can be check as low as about 10 dB HL of acoustic stimuli. Brainstem electric responses of electrical stimuli were much different from the acoustic stimuli. There was no frequency specificity of monopolar electrode array electrical stimulation as compared to acoustic stimulation. In dynamic range study of electrical response, we could find only 14 dB difference.