Interhemispheric Reversal of Mirror-Image Oblique Lines after Monocular Training in Pigeons

Abstract

Pigeons, with one eye open, were reinforced for pecking at a 45 degrees oblique line (/). When the opposite, untrained, eye alone was open, pigeons responded maximally to the mirror-image (135 degrees [unknown]) of the training stimulus (45 degrees [unknown]). This unexpected interocular reversal of mirror-image stimuli has not been reported for any other species.