Reward/Effort Trade-Off Behavioral Task
Objective: Compare dopaminergic and noradrenergic neuron activity in monkeys performing a task manipulating reward/effort trade-off to assess action selection, decision-making, and behavioral energization
This is a Reward/Effort Trade-Off Behavioral Task protocol using monkey as the model organism. The procedure involves 5 procedural steps, 3 equipment items. Extracted from a 2015 paper published in Journal of Neuroscience.
Model and subjects
monkey • not specified • unknown • not specified • not specified
Study window
Estimated timing pending
Core workflow
Task Design - Reward/Effort Trade-Off Manipulation • Electrophysiological Recording from Substantia Nigra Pars Compacta • Electrophysiological Recording from Locus Coeruleus
Primary readouts
- Dopaminergic neuron firing rate in relation to expected reward
- Dopaminergic neuron anticipatory activity in relation to upcoming effort cost
- Influence of effort cost on action selection
- Noradrenergic neuron firing rate during effort production
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.
Confirm first
- Verify the animal model, intervention setup, and collection timepoints against the source paper.
- Check that every direct vendor link matches the exact specification your lab plans to run.
Use the page like this
- Work through the protocol steps in order and use the inline vendor chips only when you need to source or verify an item.
- Jump to Experimental Context for readouts, data shape, and analysis flow before planning downstream analysis.
Protocol Steps
Start here. The step list is optimized for running the experiment, with direct vendor links available inline when you need to source a cited item.
Task Design - Reward/Effort Trade-Off Manipulation
Monkeys perform a behavioral task where they make choices between options that vary in reward magnitude and effort cost required
Note: Task is designed to assess action selection and decision-making based on reward/effort parameters
View evidence from paper
“monkeys performing a task manipulating the reward/effort trade-off”
Electrophysiological Recording from Substantia Nigra Pars Compacta
Record activity from dopaminergic neurons in the substantia nigra pars compacta during task performance
Note: Dopaminergic neurons encode expected reward and anticipate upcoming effort cost
View evidence from paper
“dopaminergic neurons from the substantia nigra pars compacta and noradrenergic neurons from the locus coeruleus in monkeys performing a task”
Electrophysiological Recording from Locus Coeruleus
Record activity from noradrenergic neurons in the locus coeruleus during task performance
Note: Noradrenergic neuron firing increases with pupil dilation and effort production
View evidence from paper
“noradrenergic neurons from the locus coeruleus in monkeys performing a task”
Monitor Pupil Dilation
Measure pupil dilation as a correlate of noradrenergic system activity and behavioral energization
Note: Pupil dilation correlates with noradrenergic neuron firing and effort production
View evidence from paper
“firing of noradrenergic neurons increased with both pupil dilation and effort production”
Record Behavioral Choices and Effort Production
Document monkey choices between reward/effort options and measure effort expended during task performance
Note: Effort production is measured in relation to action selection and behavioral energization
View evidence from paper
“action selection and energization of behavior”