Progressive Ratio Operant Conditioning
Objective: Measurement of motivated behavior for sucrose reward under increasing response requirements following peripheral Exendin-4 administration to assess the impact of GLP-1 agonist on food reward in the mesolimbic reward system
This is a Progressive Ratio Operant Conditioning protocol using rat as the model organism. The procedure involves 2 procedural steps, 1 equipment items, 3 materials. Extracted from a 2012 paper published in Journal of Neuroscience.
Model and subjects
rat • Not specified • unknown • Not specified • Not specified
Study window
Estimated timing pending
Core workflow
Peripheral Exendin-4 Administration • Progressive Ratio Operant Conditioning Task
Primary readouts
- Motivated behavior for sucrose reward
- Response rates under progressive ratio schedule
- Breakpoint (maximum ratio completed)
- Food reward suppression following EX4 administration
Key equipment and reagents
Use this page as an execution guide, then fall back to the source paper whenever you need exact exclusions, dosing details, or assay-specific caveats.
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Protocol Steps
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Peripheral Exendin-4 Administration
Administer Exendin-4 peripherally to rats prior to progressive ratio operant conditioning task
Note: Administration route is peripheral (not central or intramesolimbic)
View evidence from paper
“EX4 also decreased motivated behavior for sucrose in a progressive ratio operant-conditioning paradigm when administered peripherally”
Progressive Ratio Operant Conditioning Task
Place rats in operant conditioning apparatus and measure motivated behavior for sucrose reward under increasing response requirements
Note: Task measures food reward motivation and the impact of EX4 on reward-seeking behavior
View evidence from paper
“EX4 also decreased motivated behavior for sucrose in a progressive ratio operant-conditioning paradigm when administered peripherally”