When a simple rectangular grid is drawn toward one's face there is the striking illusion that a spherical bulge is protruding from the grid. This illusion may be helpful in studying the interaction of spatial and motion processing.
References
1.
von HelmholtzH, 1867/1962Treatise on Physiological Opticsvolume 3 (New York: Dover, 1962); English translation by SouthallJ P C for the Optical Society of America (1925) from the 3rd German edition of Handbuch der physiologischen Optik (Hamburg: Voss, 1910; first published in 1867, Leipzig: Voss)
2.
JohnstonAWrightMJ, 1986“Matching velocity in central and peripheral vision”Vision Research261099–1109
3.
LiuLSchorCM, 1998“Functional division of the retina and binocular correspondence”Journal of the Optical Society of America A151740–1755
