title: [Changes of brain potentials related to selective mental arithmetic during simulated weightlessness].
abstract: To study the effect of simulated weightlessness on brain function state, the brain event-related potentials (ERPs) during a selective mental arithmetic task were compared between head down tilt (HDT) and head up tilt (HUT) in 15 normal subjects. The results were: target (T) flash signals induced significant slow positive potentials and they decreased significantly in amplitude especially during HDT as compared with that during HUT. The data provide new evidence indicating that the ability of brain response declined during simulated weightlessness.
authors.affiliation: Institute of Space Medico-Engineering, Beijing, China.
authors.forename: L
authors.initials: L
authors.lastname: Zhao
authors.forename: J
authors.initials: J
authors.lastname: Wei
authors.forename: G
authors.initials: G
authors.lastname: Yan
authors.forename: W
authors.initials: W
authors.lastname: Chen
authors.forename: R
authors.initials: R
authors.lastname: Duan
authors.forename: W
authors.initials: W
authors.lastname: Ren
mesh_terms: D000328:Adult; D000337:Aerospace Medicine; D001921:Brain / Q000502:physiology*; D005074:Evoked Potentials, Visual; D018475:Head-Down Tilt; D006801:Humans; D008433:Mathematics; D010775:Photic Stimulation; D011187:Posture; D011597:Psychomotor Performance; D018474:Weightlessness Simulation