Discriminability of random-dot stereograms in three-dimensional space.
The discriminability of crossed-disparity (near) and uncrossed-disparity as a function of their location in the upper-left, upper-right, lower-left, and lower-right quadrants of the visual field. Discriminability was assessed using choice reaction-time (RT) and accuracy measures. While near targets were recognized equally well in the upper and lower fields, far targets were perceived more easily in the upper visual field. The discriminability of far targets was particularly poor in the lower left quadrant. These results point to the existence of fundamental asymmetries in perceiving crossed and uncrossed disparities along the vertical and lateral axes.
Previc
F H
FH
Crew Technology Division, Armstrong Laboratory, Brooks Air Force Base, Texas 78235, USA.
Breitmeyer
B G
BG
Weinstein
L F
LF
D016880:Anisotropy; D006801:Humans; D011930:Reaction Time; D015357:Vision Disparity / Q000502:physiology; D014794:Visual Fields; D014795:Visual Pathways / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*