Related Experiment Video
Updated: Aug 7, 2026

Combined Shuttle-Box Training with Electrophysiological Cortex Recording and Stimulation as a Tool to Study Perception and Learning
Published on: October 22, 2015
Behavioral contrast and inhibitory stimulus control as related to extended training
Abstract:
Pigeons received discrimination training in which the presence of a white field was correlated with variable-interval reinforcement and the presence of a monochromatic field was correlated with extinction. Responses during the negative stimulus prolonged its duration. Five experimental groups each received a different number of discrimination sessions up to 70 sessions. The last session was followed by a wavelength generalization test. The control group was tested both before and after four discrimination sessions. Responding to the positive training stimulus was enhanced in all groups by the discrimination procedures. This enhancement tended to decrease over sessions in some animals but it never disappeared in others. Responding to the test stimuli preceding discrimination training was minimal around the negative stimulus and increased in either direction away from that wavelength. Responding to the test stimuli was not systematically related to the amount of discrimination training.
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