Transtymapnic Electrocholeography in normal persons

Chon, Kyong Myong; Goh, Eui Kyung; Wang, Soo Geun; Bang, Eui Kyung; Yoon, Jong Geun; Hong, Dae Young

doi:10.35420/jcohns.1994.5.1.29

J Clin Otolaryngol Head Neck Surg 1994; 5(1):29-37

pISSN: 1225-0244, eISSN: 2713-833X

DOI: https://doi.org/10.35420/jcohns.1994.5.1.29

원저

고실내 유도법에 의한 정상인의 전기와우도

전경명¹, 고의경¹, 왕수건¹, 방의경¹, 윤종근¹, 홍대영¹

Transtymapnic Electrocholeography in normal persons

Kyong Myong Chon¹, Eui Kyung Goh¹, Soo Geun Wang¹, Eui Kyung Bang¹, Jong Geun Yoon¹, Dae Young Hong¹

Author Information & Copyright ▼

¹부산대학교 의과대학 이비인후과학교실

¹Department of Otolaryngology, College of Medicine, Pusan National University

© Copyright 1994 The Busan, Ulsan, Gyeoungnam Branch of Korean Society of Otolaryngology-Head and Neck Surgery. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published Online: May 31, 2020

ABSTRACT

Electrocochleography(ECoG) is a clinically useful method for diagnosis of endolymphatic hydrops. Transtympanic ECoG was performed on 21 normal persons for obtaining basic data to diagnose Meniere’s disease. We measured the SP, AP and SP/AP ratio, and evaluated the effect of stimulus rate & intensity on these parameters.

The results were as follows:

As the stimulus rate was increased, the latencies of SP and that of AP were increased, the amplitude of AP was decreased due to adaptation, but the amplitude of SP was not changed.
As the intensity was decreased, the amplitude of SP and AP were decreased and the latencies of SP and that of AP were lengthened. In normal persons, the amplitude of SP and that of AP were 3.70±1.56mV and 13.68±6.11mV respectively and the average of latencies of SP and AP are 1.36±0.06msec and 1.75±0.06msec respectively.
The SP/AP ratio was 0.27±0.06.

Keywords: Transtympanic ECoG; Action potential; Summating; potential; SP/AP ratio