Investigations of a mirror-image transfer effect in pigeons.
In two separate experiments, pigeons trained binocularly to peck a key on which an oblique line (e.g., 60 degrees counter-clockwise rotation from horizontal) was projected yielded bi-modal angularity generalization gradients in extinction, with peaks of responding at both the training stimulus and its mirror image (in this case 120 degrees ). This mirror-image transfer effect may be analogous to an "octave effect" in auditory generalization, but Mello's finding of a mirror-image reversal transfer effect following monocular training in pigeons suggests an alternative interpretation.
D000818:Animals; D001717:Birds; D004192:Discrimination, Psychological; D005108:Extinction, Psychological; D005793:Generalization, Psychological; D005795:Generalization, Stimulus; D009949:Orientation; D014163:Transfer, Psychology; D014796:Visual Perception