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Habituation contributes to within-session changes in free wheel running.
1Department of Psychology, Doshisha University, Kyoto, Japan. kaoyama@mail.doshisha.ac.jp
Journal of the Experimental Analysis of Behavior
|January 5, 2002
Summary
Habituation, a process of reduced response to repeated stimuli, helps regulate rat wheel running behavior. This suggests habituation, not fatigue, explains why rats stop running.
Area of Science:
- Behavioral neuroscience
- Animal behavior
Background:
- Wheel running is a common motivated behavior in rodents.
- The regulation of this behavior, particularly its termination, is not fully understood.
- Fatigue is often cited as the primary reason for cessation of activity.
Purpose of the Study:
- To test the hypothesis that habituation influences the regulation of wheel running in rats.
- To investigate if habituation provides a better explanation for the termination of wheel running than fatigue.
Main Methods:
- Three experiments involving rats running in activity wheels for 30-minute sessions.
- Manipulations included varying periods of wheel deprivation, introducing brief disruptive events, and changing the running environment.
- Quantitative analysis of running patterns using established equations.
Main Results:
- Spontaneous recovery of running was observed after longer deprivation periods.
- Dishabituation occurred, with running rates increasing after brief external stimuli.
- Stimulus specificity was evident, as running increased when the environment changed.
- Running patterns were mathematically described by habituation and motivation models.
Conclusions:
- Habituation significantly contributes to the regulation of wheel running behavior.
- Habituation offers a more compelling explanation for the cessation of wheel running than fatigue.
- Habituation and sensitization are likely key mechanisms regulating various motivated behaviors.