Fig. 1: Response direction as a function of visual condition.
From: The motor vertical in the absence of gravicentric cues

Data were registered once in parabolic flight (session P), and once while participants were lying with the torso prone on ground (session E). In vis-body, the display was aligned with the participants’ long body axis while in vis-tilt, it was rotated 45° clockwise with respect to that axis. Each dot is the mean across trials of one participant. Boxes represent ±1 interquartile range, whiskers ±1.5 interquartile range, lines are medians and “x” are means. ANOVA of Session × Condition yielded significance only for the factor Condition.