[Effect of long-term microgravity on the vestibular function].
Comprehensive computerized oculomotor testing was used to investigate the vestibular function in 9 Russian members of ISS crews 3-9 on days 1 (2), 4 (5) and 8 (9) of return from long-term stay in microgravity (126 to 195 days). The vestibular function was assessed by the static otolith-cervical-ocular reflex, dynamic otolith-cervical-ocular reactions, vestibular reactivity, and spontaneous oculomotor activity. The postflight investigations revealed functional disorders in the peripheral (an increased vestibular reactivity, absent or damped otolith-cervical-ocular reflex), and central (spontaneous typical and atypical nystagmus, gaze nystagmus) vestibular analyzer. The pattern and extent of vestibular disorders after long-term exposure in microgravity were individual by character; however, some of the vestibular reactions, including disappearance or considerable damping of the static otolith-cervical-ocular reflex, exaggerated vestibular reactivity and spontaneous eye movements, displayed consistency.
Kornilova
L N
LN
Temnikova
V V
VV
Alekhina
M I
MI
Naumov
I A
IA
Borovikova
V P
VP
Iakushev
A G
AG
Muratova
E A
EA
Vasin
A V
AV
D000221:Adaptation, Ocular / Q000502:physiology*; D000328:Adult; D000337:Aerospace Medicine; D003198:Computer Simulation; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D009760:Nystagmus, Physiologic / Q000502:physiology*; D016273:Occupational Exposure; D012016:Reference Values; D013026:Space Flight; D013997:Time Factors; D014722:Vestibule, Labyrinth / Q000502:physiology*; D014893:Weightlessness