[The study of vertical vestibulo-ocular reflexes].
Methodical approaches for studying the vertical vestibuloocular reflexes (VVOR) have been proposed. Eye movements were recorded by the electronystagmography: vertical movements of each ball of the eye was separately recorded and horizontal movements--in combination. Stimulation of the semicircular canals was performed by active movements of the head in the saggital plane with a frequency of 0.04 Hz (stimulus 1), 0.12 Hz (stimulus 2) and 0.24 Hz (stimulus 3). The VVORs have been recorded with the eyes closed (Program I) and with fixing the visual object on the eyes (Program II). Then, there has been recorded a vertical component of the horizontal vestibulovertical reflexes which evoked by active turn of the head around vertical axis of the body with the eyes closed (Program III) and fixation with the eyes of visual object (Program IV). The elaborated methods enable one to record steadily the VVOR in the all categories of test-subjects. As the VVOR indices there accepted the coefficient of reactivity, phase displacement; coefficients of asymmetry allowing one to compare the intensity of eye movements directed upwards and downwards; to reveal intraocular asymmetry.
I A
IA
Skliut
S A
SA
Likhachev
M I
MI
Tarasevich
D006257:Head / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D009068:Movement / Q000502:physiology*; D012027:Reflex, Vestibulo-Ocular / Q000502:physiology*; D012438:Saccades / Q000502:physiology
Issledovanie vertikal'nykh vestibuo-okuliarnykh refleksov.