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Updated: May 11, 2025

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Climate trauma from wildfire exposure impacts cognitive decision-making.

Jason Nan1,2, Satish Jaiswal3, Dhakshin Ramanathan3,4,5,6

  • 1Neural Engineering and Translation Labs (NEATLabs), University of California, San Diego, 9500 Gilman Drive, Mail Code 0737, La Jolla, CA, 92037, USA. janan@ucsd.edu.

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PubMed
Summary

Climate trauma from wildfires significantly impairs decision-making and alters brain activity. This neuro-cognitive impact, particularly reduced Win-Stay behavior, highlights potential biomarkers for mental health interventions in affected communities.

Keywords:
AlphaDecision-makingEEGPosterior cingulate cortexReward

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Area of Science:

  • Environmental Psychology
  • Neuroscience
  • Cognitive Science

Background:

  • Climate trauma, a consequence of climate disasters, is linked to anxiety and depression.
  • Previous research identified mental health impacts following the 2018 California Camp Fire wildfire.

Purpose of the Study:

  • To investigate the effects of climate trauma on cognitive decision-making and its neural underpinnings.
  • To explore neuro-cognitive correlates of climate trauma one year after a wildfire event.

Main Methods:

  • Recruited directly exposed (n=27), indirectly exposed (n=21), and non-exposed (n=27) groups one year post-wildfire.
  • Administered a decision-making task with simultaneous electroencephalography (EEG) recordings.
  • Evaluated Win-Stay behavior and analyzed EEG for neural correlates.

Main Results:

  • Directly exposed individuals exhibited significantly reduced Win-Stay behavior compared to control groups.
  • EEG data revealed greater parietal alpha activity associated with choices and rewards in the directly exposed group.
  • This increased alpha activity was localized to the posterior cingulate cortex.

Conclusions:

  • Climate trauma significantly impacts neuro-cognitive processing, specifically in value-based decision-making.
  • Altered decision-making and neural activity patterns may serve as biomarkers for mental health interventions.
  • Findings underscore the long-term cognitive consequences of climate disasters on affected populations.