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Alternative representations of time, number, and rate.
1Psychology Department, Brown University, Providence, RI 02912.
Cognition
|November 1, 1990
Summary
Rats exhibit distinct time perception patterns, including a "break-run-break" response and consistent timing across different intervals. These findings inform scalar timing theory, with implications for understanding temporal processing in animals.
Area of Science:
- Cognitive Psychology
- Animal Behavior
- Neuroscience
Background:
- Time perception is a fundamental cognitive process.
- The peak procedure is a standard behavioral task for studying temporal generalization in animals.
- Scalar timing theory provides a framework for understanding interval timing.
Purpose of the Study:
- To describe key characteristics of time perception in rats using the peak procedure.
- To compare an information-processing model with a connectionist model of scalar timing theory.
- To explore potential extensions of the connectionist model for other perceptual domains.
Main Methods:
- Utilized a temporal generalization task (peak procedure) with rats.
- Analyzed response rates as a function of time relative to reinforcement.
- Developed and compared information-processing and connectionist versions of scalar timing theory.
Main Results:
- Identified three main facts of time perception: a smooth, asymmetric response rate function, a "break-run-break" pattern in trial responding, and superposition of mean response rates across different intervals.
- The connectionist model, featuring multiple oscillators and an autoassociation network, offers a biologically plausible account.
Conclusions:
- The study elucidates critical features of interval timing in rats.
- Scalar timing theory, particularly its connectionist instantiation, provides a robust framework for understanding time perception.
- The connectionist model may be extended to explain perception of number, rate, and spatial orientation.