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Temporal control of conditioned responding in goldfish
Michael R Drew1, Bojana Zupan, Anna Cooke
1Department of Psychology, Columbia University, New York, NY, USA. mrd28@columbia.edu
Journal of Experimental Psychology. Animal Behavior Processes
|January 20, 2005
Summary
Goldfish learn response timing early in conditioning, focusing on when to respond rather than when not to respond. This challenges traditional theories of conditioned response timing.
Area of Science:
- Behavioral neuroscience
- Animal behavior
Background:
- Understanding conditioned responding is crucial for behavioral neuroscience.
- The peak procedure is a standard method for assessing response timing in animal learning.
Purpose of the Study:
- To characterize response timing during the acquisition and maintenance of conditioned responding in goldfish.
- To investigate temporal features of conditioned responses using the peak procedure.
Main Methods:
- Goldfish were trained using light-shock pairings with varying interstimulus intervals (5s or 15s).
- The peak procedure involved presenting the conditioned stimulus (light) without reinforcement on interspersed trials.
- General activity served as the measure of conditioned response, with peaks analyzed for timing and variability.
Main Results:
- Conditioned responses (general activity) peaked at the expected time of the unconditioned stimulus.
- Variability in activity distribution was found to be scalar.
- Temporal features of the conditioned response showed minimal change during acquisition, suggesting early learning of timing.
Conclusions:
- Timing in conditioned responding is learned early in training.
- Goldfish learn when to respond, rather than learning to inhibit responses, challenging Pavlov's 'inhibition of delay' theory.
