Cite as:
Fujita M, Ishii M, Satou M, 2010, "Depth percept from horizontal and vertical motion parallax by to-and-fro head motion" Perception 39 ECVP Abstract Supplement, page 73

Depth percept from horizontal and vertical motion parallax by to-and-fro head motion

M Fujita, M Ishii, M Satou

Depth perception from motion parallax is evoked by not only right-and-left motion of the observer but also to-and-fro motion. Motion parallax differs between right-and-left and to-and-fro motion: a horizontal translation of the head produces horizontal image deformation on the retina, on the other hand a to-and-fro translation causes both horizontal and vertical deformation. In this study, we investigated depth percept from horizontal and vertical motion parallax by to-and-fro head motion. Stimulus was a set of five white-colored dots aligned vertically or horizontally in a darkroom and presented on a computer monitor. Three dots (the center and the both ends) and the other two dots were simulated to appear with different depth. The dots were moved in synchronization with the observer’s head. Fixation point was given at the center of the stimulus or at a separated place of it.Observers were asked to observe stimulus monocularly with head motion and to decide if the three dots were farther or closer than the other two dots. Results indicate that vertical motion parallax is effective in perceiving depth for the horizontally aligned dots, and horizontal motion parallax for the vertically aligned dots .

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