title: The effect of linear vection on manual aiming at memorized directions of stationary targets.
abstract: Stationary observers were required to aim manually at either a straight-ahead, or a lateral, immobile target (0 degrees and 20 degrees of eccentricity, respectively). First, they aimed at a perceptually present target. Second, they aimed at the memorized direction of the target. Third, they aimed at the memorized direction of the target after a 4 s period of forward sagittal vection. The comparisons of the post-vection versus ante-vection aimings at the memorized direction of the targets reflect an illusory increase in the eccentricity of the lateral target, and no change in the direction of the straight-ahead target. These results objectivate the idea that forward sagittal vection (a particular case of linear vection) corresponds to an illusion of self-displacement, ie an illusory change of body place through space.
authors: LENA, URA CNRS 654, Hôpital de la Salpêtrière, Paris, France.
authors: J C
authors: JC
authors: Lepecq
authors: F
authors: F
authors: Jouen
authors: D
authors: D
authors: Dubon
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory; D008875:Middle Aged; D009068:Movement; D013028:Space Perception; D014796:Visual Perception