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| Motivational and Discriminative Functions of Context in Renewal and Reinstatement of Operant Behavior in Mice |
| Sunday, May 25, 2025 |
| 12:00 PM–12:20 PM |
| Convention Center, Street Level, 151 AB |
| Area: EAB |
| Instruction Level: Intermediate |
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| Motivational and Discriminative Functions of Context in Renewal and Reinstatement of Operant Behavior in Mice |
| Domain: Basic Research |
| DANIELA GALVIS-QUINTANA (University of Nevada, Reno), Matthew Lewon (University of Nevada, Reno) |
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| Abstract: Context may be defined as the events that are interrelated with the behavior of an organism in the moment. Two classes of events that comprise context are those that have been described as having discriminative and/or motivational functions. Two experiments were conducted to investigate the interactions between discriminative and motivational features of context in the recovery of extinguished responding in operant renewal and reinstatement procedures. In both experiments, two groups of mice received operant acquisition and extinction sessions in two different discriminative contexts. In Experiment 1, all of these occurred under 24 h food deprivation. In Experiment 2, half of these occurred under 24 h food deprivation, and half occurred under 0 h deprivation. Mice were then tested for renewal and reinstatement after the last extinction session. In both experiments, one group was tested under 24 h food deprivation, and another was tested under 0 h food deprivation. In both experiments, there was evidence of discriminative contextual control for both groups (more responding in the acquisition discriminative context), but the 24-h test groups showed significantly more recovery of responding. Results are discussed in terms of the relative contributions of discriminative and motivational contextual factors in the recovery of extinguished behavior. |
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