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Related Experiment Videos

Prefrontal brain activity predicts temporally extended decision-making behavior.

Tal Yarkoni1, Todd S Braver, Jeremy R Gray

  • 1Washington University, Department of Psychology, St. Louis, Missouri 63130, USA. tyarkoni@wustl.edu

Journal of the Experimental Analysis of Behavior
|April 7, 2006
PubMed
Summary

Brain activity in the right lateral prefrontal cortex predicts choices in dynamic decision-making tasks. This functional neuroimaging study shows how brain regions can forecast behavior, advancing behavioral psychology research.

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Behavioral Economics

Background:

  • Functional neuroimaging studies on decision-making are common but often use passive tasks with low individual variability.
  • Predicting overt behavior from brain activity remains underexplored in decision-making research.

Purpose of the Study:

  • To investigate the neural mechanisms underlying behavior in a dynamic decision task using functional magnetic resonance imaging (fMRI).
  • To examine how brain activity predicts choice behavior when individuals must choose between immediate smaller rewards and delayed larger rewards.

Main Methods:

  • Employed functional magnetic resonance imaging (fMRI) during a dynamic decision task.
  • Manipulated the accrual period for long-term gains (2 versus 12 trials).

Related Experiment Videos

  • Analyzed event-related neural activity in relation to choice behavior.

    • Main Results:

    • Right lateral prefrontal cortex activity selectively predicted choice behavior across both experimental conditions.
    • Insular cortex activity correlated with reward amount but did not predict choices.
    • Demonstrated that specific brain regions can predict complex behavioral choices.

    Conclusions:

    • Functional neuroimaging, specifically fMRI, can effectively predict complex choice behavior.
    • The right lateral prefrontal cortex plays a crucial role in predicting decisions in dynamic reward scenarios.
    • fMRI is a valuable tool for dissociating neural mechanisms underlying specific behavioral tasks.