ABSTRACT
Dr. Mackworth has already suggested that it is possible to learn useful things about the eye-positioning system even with rough measurements of eye movements. I would like to make the even more-radical suggestion that it is possible to learn useful things about the eye-positioning system without measuring eye movements at all. I would suggest that the direct study of the eye-positioning system could be influenced by purely psychophysical studies in much the same way that direct physiological studies of retinal mechanisms were guided by the earlier psychophysical analyses of such phenomena as "acuity," "spectral sensitivity," and "dark adaptation."
