Colour but not form patterns combine between the eyes

Purpose: A visual pattern was broken into patches, some of which were shown to one eye and the remainder of which were shown to the other eye. Our aim was to find the conditions under which the subject could combine the infor mation given to the two eyes separately to reconstruct the original pattern . Methods: One green and four red patches were presented to one eye. Five pat ches were presented to the other eye at corresponding locations but with re d substituted for green and green Tor red, Results: When the chromatic contrasts were appropriately adjusted, subjects saw five patches of a single colour for most of the viewing time, intermix ed horizontal and vertical gratings did not separate into coherent percepts in the same way, Conclusions: This result indicates cooperation between the responses to col our patches presented to different eyes, a finding that may be of use in te sting for normal binocular vision.