EFFECTS OF INERT GAS NARCOSIS ON THE VESTIBULAR OCULAR REFLEX

Authors
  1. Hamilton, K.
  2. Porlier, G.
  3. Landolt, J.
  4. Fraser, W.
  5. Fowler, B.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);York Univ, Downsview ONT (CAN) Dept of Physical Education;York Univ, Toronto ONT (CAN) Dept of Psychology
Abstract
A study was conducted to examine the vestibular ocular reflex (VOR) during narcosis. The slow phase velocity of the nystagmus was measured in six subjects by means of electronystagmography during the inhalation of 25% nitrous oxide. It was found that nitrous oxide increased the velocity of the slow phase component of the VOR by approximately 50%. This result indicates that the gain of the VOR is effectively increased during nitrous oxide induced narcosis. It appears that the vestibular end organs and/or the central pathways controlling nystagmus are affected by nitrous oxide and this may be a reason for the disruption in balance associated with inert gas narcosis.
Report Number
DCIEM-86-P-36 — Research Paper
Date of publication
15 Sep 1986
Number of Pages
5
Reprinted from
Undersea Biomedical Research, vol 13, no 3, 1986, p 355-359
DSTKIM No
87-00697
CANDIS No
49544
Format(s):
Hardcopy;Originator's fiche received by DSIS

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