title: The effect of head-down tilt on the EEG response to mental arithmetic (MA).
mesh_terms: D000293:Adolescent; D000328:Adult; D001921:Brain / Q000502:physiology*; D004569:Electroencephalography; D006801:Humans; D008433:Mathematics; D008875:Middle Aged; D011187:Posture; D013026:Space Flight; D014893:Weightlessness