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Science 9 April 1965:
Vol. 148. no. 3667, pp. 252 - 254
DOI: 10.1126/science.148.3667.252
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Articles

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

Nancy K. Mello 1

1 Stanley Cobb Laboratories, Harvard Medical School, and Massachusetts General Hospital, Boston

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.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)