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Published on: October 3, 2020
Conditional Control of Instrumental Avoidance by Context Following Extinction.
Vincent D Campese1, Lauren A Brannigan2, Joseph E LeDoux2,3
1Department of Psychology, University of Evansville, Evansville, IN, United States.
Context influences avoidance behavior after extinction. Rodents showed renewed avoidance when tested outside the extinction context, but reduced responding within it, demonstrating context-controlled extinction.
Area of Science:
- Behavioral neuroscience
- Learning and memory
- Animal behavior
Background:
- Pavlovian extinction is crucial for modifying learned behaviors.
- Understanding context's role in extinction is vital for treating fear and anxiety disorders.
- Instrumental avoidance responding is influenced by learned associations.
Purpose of the Study:
- To investigate if context controls the expression of avoidance behavior following extinction.
- To determine if extinction renewal is modulated by the testing environment.
- To examine the hierarchical control of behavior based on associative learning.
Main Methods:
- Rodents were used in three distinct training paradigms (ABB vs. ABA, AAA vs. AAB, ABB vs. ABC).
- Extinction learning was conducted in specific contexts.
- Retention testing involved presenting extinguished cues in both extinction and novel contexts.
Main Results:
- Avoidance responding (renewal) significantly increased when extinguished cues were tested in a context different from extinction.
- Response rates were significantly lower when cues were tested within the original extinction context.
- Findings indicate context-dependent control over extinguished avoidance behavior.
Conclusions:
- Context plays a critical role in the expression of extinguished avoidance responses.
- Extinction learning is context-specific, influencing behavioral renewal.
- Results support a hierarchical model of associative learning and behavioral control.
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