On framing effects in decision making: linking lateral versus medial orbitofrontal cortex activation to choice
Sabine Windmann1, Peter Kirsch, Daniela Mier
1University of Plymouth, UK. S.Windmann@psych.uni-frankfurt.de
Journal of Cognitive Neuroscience
|July 15, 2006
Summary
The caudolateral orbitofrontal cortex (OFC) processes unsteady outcomes, not just their valence. This brain region
Area of Science:
- Neuroscience
- Cognitive Psychology
- Decision Science
Background:
- The orbitofrontal cortex (OFC) plays a crucial role in outcome processing.
- Two competing hypotheses exist regarding OFC function: lateral/medial division for valence representation versus medial OFC for steady associations and lateral OFC for shifting outcomes.
Purpose of the Study:
- To contrast two proposed correlates of outcome processing in the OFC.
- To investigate whether the lateral OFC represents outcome valence or outcome steadiness.
Main Methods:
- Event-related functional magnetic resonance imaging (fMRI).
- Comparison of the original and inverted versions of the Iowa Gambling Task (IGT).
Main Results:
- The caudolateral OFC was sensitive to the steadiness of outcomes, not solely outcome valence.
- The original and inverted IGTs produced different behavioral and brain activation patterns, indicating they are not equivalent measures.
- Evidence supports the role of lateral OFC in processing changing (unsteady) outcomes.
Conclusions:
- The caudolateral OFC is specialized for processing unsteady outcomes, crucial for adaptive decision-making.
- Findings align with prospect theory, highlighting biases in decision-making under different reward/punishment structures.
- Specialized processing of unsteady rewards may support evolutionary advantages in planning and problem-solving.
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