NDLI: Effects of long-term space flights on the organization of the horizontal gaze fixation reaction

Content Provider	Springer Nature Link
Author	Tomilovskaya, E. S. Kozlovskaya, I. B.
Copyright Year	2010
Abstract	The results of the Russian-Austrian space experiment Monimir, which was a part of the international space program Austromir, are presented. The characteristics of the horizontal gaze fixation reaction (hGFR) to the visual targets were studied during long-term space flights. Seven crewmembers of the space station Mir participated in our experiment. The subjects were tested four times before the flight, five times during the flight, and three to four times after landing. During the flight and after accomplishing, the characteristics of gaze fixation reaction changed regularly: the reaction time and coefficient of the gain of vestibular-ocular reflex increased; the velocities of eye-head movements increased and decreased. These changes were indicative of a disturbed control of the vestibular-ocular reflex under microgravity conditions because of variability of the vestibular input activity. The cosmonauts that had flight and non-flight professional specializations differed in strategies of their adaptation to the microgravity conditions. In the former, exposure to microgravity was accompanied by gaze hypermetry and inhibition of head movements; conversely, in the latter, the velocity of head movements increased, whereas that of saccades decreased.
Starting Page	708
Ending Page	715
Page Count	8
File Format	PDF
ISSN	03621197
Journal	Human Physiology
Volume Number	36
Issue Number	6
e-ISSN	16083164
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2010-12-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	space flight gaze fixation reaction microgravity vestibular-ocular reflex correction saccades Biomedicine general Human Physiology Life Sciences
Content Type	Text
Resource Type	Article
Subject	Physiology Physiology (medical)

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