Critical duration for the resolution of form: Centrally or peripherally determined?

Abstract

Bloch's law is shown to hold for a visual acuity task with monocular and binocular viewing as well as in a condition where the target was presented to the right and left eyes in immediate succession.The critical duration (tc) in the latter condition was found to be approximately double the t c in the other experimental conditions.It is concluded that t c for the resolution of form is not determined at a visual station where binocular summation occurs, i.e., a station in the visual cortex.Moreover, the hypothesis that t c corresponds to a central "moment" fails to be supported/