chapter we have reviewed the previous analyses of time perception and the influence of various treatments on the speed of the internal clock involved in such time perception. Then we attempted to extend this analysis to the timing of repetitive responses (drinking by rats and tapping by people).
The major strength of the physiological analysis of clock speed is that it provides explicit predictions of the effect of various treatments (such as injection of methamphetamine) on the intervening variable. The major strength of the cognitive model is that it provides explicit predictions of the effects of changes in the intervening variable (such as clock speed) on behavior. It appears that dopaminergic drugs affect the internal clock, and that the internal clock is a critical module in temporal perception and timed performance.
The authors express appreciation to J. Michael Walker, Jeffrey Winter, and Jennifer Home for contributions to the collection and interpretation of the drinking behavior of the animals, to Charles Collyer for helpful comments on the Tau- Gamma model, and to Stephen Fairhurst and Nick Staddon for programming contributions. This research was supported in part by a Grant from the National Institute of Mental Health, ROI-MH44234.
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