Interocular generalization: a study of mirror-image reversal following monocular discrimination training in the pigeon

Journal of the Experimental Analysis of Behavior


Generalization gradients along a continuum of angular orientation were obtained from four pigeons, following monocular training on a discrimination between a 45 degrees oblique line (S+) and a 135 degrees oblique line (S-). All pigeons were trained on a chain DRO VI 1 schedule of reinforcement. Generalization gradients obtained with the trained and untrained eye were compared. All pigeons responded maximally to the 45 degrees line (S+) when tested with only the trained eye open. During generalization tests of interocular transfer with only the untrained eye open, three pigeons responded maximally to S- (135 degrees ), the mirror-image of the stimulus associated with reinforcement during training (45 degrees ). The other pigeon failed to show interocular transfer of the discrimination. Interocular reversal of left-right mirror-image stimuli has not been reported for any other species.


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Related Concepts

Discrimination Learning
Generalization, Stimulus
Psychological Transfer
Visual Perception

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