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The neural predictors of choice preference in intertemporal choice
1School of Psychology, Southwest University, Chongqing, China.
Brain Research
|January 7, 2012
Summary
Brain activity in the ventromedial prefrontal cortex (vmPFC), anterior cingulate cortex (ACC), and posterior cingulate cortex (PCC) predicts intertemporal choices before they are made. The left posterior insula is active when choosing delayed rewards.
Area of Science:
- Neuroscience
- Decision Science
- Cognitive Psychology
Background:
- Intertemporal choice involves valuing options and selecting the most valuable one.
- Previous research identified brain regions like vmPFC, VStr, and PCC in value representation.
- The predictive role of these brain regions for actual choices remains unclear.
Purpose of the Study:
- To identify brain regions whose activity predicts subsequent choices in intertemporal decision-making.
- To differentiate brain activity during the valuation stage versus the choice stage.
Main Methods:
- Functional magnetic resonance imaging (fMRI) was used to measure brain activity.
- Participants completed a simple intertemporal choice task.
- Analysis focused on encoding decision information and activity during choice selection.
Main Results:
- Decision-related information was encoded in the vmPFC, ACC, and PCC prior to choice execution.
- The left posterior insula showed increased activity during the choice stage when selecting delayed rewards over immediate ones.
- Activation patterns in vmPFC, ACC, and PCC predicted subsequent choice preferences.
Conclusions:
- vmPFC, ACC, and PCC activity patterns can predict intertemporal choice preferences before the choice is made.
- The left posterior insula plays a significant role in preference selection during the choice stage, particularly for delayed rewards.
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