Making decisions immediately post-stress: Evidence for dorsolateral prefrontal cortex involvement with an fMRI study.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Decision Science

Background:

• Stress impacts decision-making, potentially making it less deliberate.
• Neural markers are sought to understand stress effects on risk-taking.
• Investigating immediate post-stress effects on decision-making is crucial.

Purpose of the Study:

• To investigate the neural correlates of stress-induced changes in risky decision-making.
• To examine if acute stress reduces deliberate decision-making.
• To identify brain regions affected by stress during risk assessment.

Main Methods:

• Functional magnetic resonance imaging (fMRI) and electrodermal activity (EDA) were used.
• A within-subject design exposed participants to stress and control conditions.
• Participants performed a "decision-making under risk" task post-condition.

Main Results:

• Stress induction was behaviorally and physiologically confirmed.
• Participants made significantly fewer risky decisions after stress compared to control.
• Reduced activation in the right fronto-opercular and left dorsolateral prefrontal cortex (dlPFC) was observed post-stress.

Conclusions:

• Acute stress leads to less risky decisions immediately after exposure.
• Reduced dlPFC activation post-stress may indicate impaired cognitive control and less deliberate decision-making.
• Future interventions could aim to enhance dlPFC activation to improve post-stress decision-making.