Short-term memory in the pigeon: stimulus-response associations
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Updated: Aug 7, 2026

Recording Single Neurons' Action Potentials from Freely Moving Pigeons Across Three Stages of Learning
Published on: June 2, 2014
Abstract:
THREE PIGEONS PECKED FOR FOOD IN TWO EXPERIMENTS IN WHICH EACH TRIAL CONSISTED OF TWO PHASES: a study and a test phase. The study phase in Experiment I consisted of two stimulus-response pairs presented successively. Each pair consisted of the illumination of a left or right key (the stimulus) and a peck on the lighted side key (the response). The study phase in Experiment II consisted of three such pairs presented successively. A retention interval, varied between 0.1 and 4.0 sec, separated the study phase from the test phase. The test phase of a trial began with the illumination of the center key by one of two (Experiment I) or three (Experiment II) colors. This color was the same as the stimulus element of one of the pairs in the study phase. A reinforcer was presented if a subject then emitted the response element of the indicated stimulus-response pair. The results provide information on the conditions that enable a pigeon to remember the responses most recently emitted in the presence of various stimuli. The results suggest an account of the maintenance of behavior that is temporally noncontiguous with reinforcement.
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