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

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Science  09 Apr 1965:
Vol. 148, Issue 3667, pp. 252-254
DOI: 10.1126/science.148.3667.252


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