The effect of head-down tilt on brain potentials related to visual attention.
To study the possible effect of simulated weightlessness on brain function state, the brain event-related potentials (ERPs) in a simple visual selective response task were compared between HDT and HUT in 9 normal subjects. The results were: The Target(T) and non-Target(NT) flash signals both induced significant slow positive potentials which were supposed to related to the attention state; the amplitude of the positive potentials in frontal regions decreased significantly especially for NT-ERPs during HDT compared with that during HUT. The data reported provide new evidence indicating that more attention should be paid on the brain function study during space flight.
Wei
J
J
Institute of Space Medico-Engineering, Beijing.
Yan
G
G
Zhao
L
L
Duan
R
R
Xiao
F
F
Li
D
D
Wu
J
J
D000328:Adult; D000337:Aerospace Medicine; D001921:Brain / Q000502:physiology*; D004569:Electroencephalography; D004585:Electrooculography; D005074:Evoked Potentials, Visual; D018475:Head-Down Tilt; D006801:Humans; D008297:Male; D010775:Photic Stimulation; D011187:Posture; D011597:Psychomotor Performance; D018474:Weightlessness Simulation