원저

시운동성 안진 및 시운동성후안진에 미치는 두위의 영향

홍대영1, 고의경1,*, 윤종근1, 노환중1, 왕수건1, 전경명1
Dae Young Hong1, Eui Kyung Goh1,*, Jong Keun Yoon1, Hwan Jung Roh1, Soo Geun Wang1, Kyong Myong Chon1
Author Information & Copyright
1부산대학교 의과대학 이비인후과학교실
1Department of Otolaryngology, College of Medicine, Pusan National University, Pusan, Korea
*교신저자: 고의경, 602-735 부산광역시 서구 아미동 1-10 부산대학교 의과대학 이비인후과학교실 전화: (051) 240-7332, 7335·전송: (051) 246-8668 E-mail: gohek@hyowon.cc.pusan.ac.kr

© Copyright 2000 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.

Received: Mar 10, 2000; Accepted: Mar 30, 2000

Published Online: May 31, 2020

ABSTRACT

Background and Objectives: Optokinetic nystagmus (OKN) is triggered by image slip on the retina. During optokinetic stimulation, activity related to slow phase eye-velocity in the subcortical pathways is stored by “central velocity storage integrator”. When the optokinetic stimuli, the integrator discharges, generating optokinetic after-nystagmus (OKAN) with fast phases beating in the same direction as the previous OKN. Materials and Methods: Horizontal OKN and OKAN were examined in sitting and 90° left and right lateral position in healthy adults. Optokinetic stimuli (100°sec) were given for 45 second using stripe pattern stimulator and then OKAN was recorded for 45 second. Four parameters which were OKN slow component velocity (OKN SCV), initial slow component velocity of OKAN (init SCV), slow cumulative eye position of OKAN (SCEP), and time constant of OKAN (TC) in the sitting position were calculated in 3 positions. Results: 1) The mean and standard deviation of OKN SCV, init SCV, SCEP and TC in sitting position were 34.9±13.8°/sec, 13.9±6.3°/sec, 211.8±96.5°/sec and 17.1 ±7.0 sec. 2) In the lateral recumbent position, OKN SCV, init SCV, and SCEP were decreased to 76%, 67%, and 85.6%, but TC was increased to 136.3% of those in sitting position. 3) There was no significant difference in all parameters between clockwise and couter- clockwise optokinetic stimuli. 4. The gravity has no significant effect on OKN and OKAN. Conclusion: These results suggest that head position affects OKN and OKAN. J Clinical Otolaryngol 2000;11:60–67)

Keywords: 시운동성안진; 시운동성후안진; 두위
Keywords: OKN; OKAN; Head position