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Related Concept Videos

Reason and Intuition01:37

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The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the...
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Measuring the Subjective Value of Risky and Ambiguous Options using Experimental Economics and Functional MRI Methods
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The precuneus may encode irrationality in human gambling.

P Sacre, M S D Kerr, S Subramanian

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
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    Researchers found that high-frequency brain activity in the precuneus increased during irrational financial decisions. This suggests potential therapeutic interventions targeting gamma rhythms for decision-making disorders.

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    Area of Science:

    • Neuroscience
    • Cognitive Science
    • Psychiatry

    Background:

    • Human decision-making is often irrational, particularly in psychiatric patients with impaired cognitive and emotional processing.
    • Existing neuroimaging methods like fMRI have limitations in temporal resolution and signal specificity for studying decision-making.
    • Lesion studies offer limited insight into neural activity during decision-making processes.

    Purpose of the Study:

    • To investigate the neural basis of rational versus irrational decision-making.
    • To analyze brain activity in the precuneus during a financial decision-making task.
    • To explore potential therapeutic targets for pathological decision-making.

    Main Methods:

    • Local field potential recordings were used in human subjects during a financial decision-making task.
    • Spectral analyses were employed to examine neural activity patterns.
    • Non-parametric cluster statistics were applied to assess significant differences in brain activity.

    Main Results:

    • Significant modulation of neural activity was observed in the precuneus between rational and irrational decision trials (p < 0.001).
    • High-frequency activity (70-100 Hz) in the precuneus was notably increased during irrational decision-making.
    • These findings provide preliminary evidence linking precuneus activity to decision-making rationality.

    Conclusions:

    • The precuneus plays a crucial role in modulating rational and irrational financial decisions.
    • Increased high-frequency activity in the precuneus may be a neural correlate of irrational choices.
    • Targeting gamma rhythms in the precuneus via electrical stimulation could be a novel therapeutic strategy for pathological decision-making.