title: Subjective vertical before and after space flight.
abstract: Three scientist astronauts on the D1 spacelab mission participated in a series of orientation experiments before and after exposure to orbital weightlessness. Each subject was tilted about a roll axis at 15 deg intervals up to +/- 90 deg. At each angle the subject set a luminous line to what he perceived to be the vertical. The results of these tests are presented.
authors.affiliation: Department of Physiology, Johannes-Gutenberg University, Mainz, FRG.
authors.forename: J R
authors.initials: JR
authors.lastname: Kass
authors.forename: H
authors.initials: H
authors.lastname: Vogel
mesh_terms: D000222:Adaptation, Physiological; D006801:Humans; D009949:Orientation / Q000502:physiology*; D010037:Otolithic Membrane / Q000502:physiology*; D012399:Rotation; D013026:Space Flight; D018667:Tilt-Table Test; D014893:Weightlessness