The vertical-horizontal illusion; an experimental study of meridional disparities in the visual field (1917)
Ritter, Sarah Margaret · Princeton, N.J. and Lancaster, Pa., Psychological review company · leaf 93
THE VERTICAL-HORIZONTAL ILLUSION 83 tical limits of the second of the acuity curves of the Wertheim chart. Combining these in the same figure and adding an ap¬ proximate outline of the fovea centralis and the macula lutea, reduced to the same scale — one-fifth the objective size of the standards —… … Figure 8. — The small circle represents the fovea centralis ; the oval, the macula lutea; the solid vertical and horizontal lines are the normal standards of this experiment (the dots indicate the extent of the shorter standards, S. I, S. 2, S. 3, and S. 4) ; the broken curves represent the…
Optical illusions
Internet Archive · Princeton Theological Seminary Library · Public domain (published before 1931). Free to use for anything.
