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Neural reward system reflects individual value comparison strategy in cost-benefit decisions
Zarah Le Houcq Corbi1, Alexander Soutschek2
1Department for Psychology, Ludwig Maximilian University Munich, Munich, Germany.
Communications Biology
|November 12, 2024
Summary
Neuroimaging reveals that brain activity in the striatum reflects how individuals compare choices, not just reward values. Dopamine manipulation showed it influences this comparison strategy in decision making.
Area of Science:
- Neuroscience
- Cognitive Science
- Psychology
Background:
- Decision neuroscience assumes choices are based on subjective reward values.
- Psychological theories propose attribute-based comparisons, questioning reward system interpretations.
Purpose of the Study:
- To investigate if neural activity reflects psychological decision strategies.
- To examine the role of the dopaminergic system in these strategies.
Main Methods:
- Used neuroimaging (fMRI) and pharmacological manipulation (dopamine antagonism).
- Employed neural model comparisons to link brain activity with choice behavior.
Main Results:
- Striatal activation correlated with an individual's dominant value comparison strategy.
- Dopamine antagonism reduced engagement with preferred comparison strategies.
Conclusions:
- Neural activity aligns with psychological decision-making strategies.
- Findings support the biological basis of psychological choice accounts and highlight the need for neural model comparisons.
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