Stress Reshapes Brain Connections And Boosts Resilience

New research from Florida International University explores how the brain's internal wiring and a person's subjective experience of stress interact to determine stress resilience.

Mar. 13, 2026 at 7:24am

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Researchers at Florida International University conducted a study where participants submerged their hand in ice-cold water to explore how the brain's control network handles stress. They found that people who showed more cognitive flexibility, using strategies like paced breathing and shifting attention, were able to tolerate the discomfort longer than those who tried to force control. The findings suggest stress may involve dynamic shifts in brain connectivity, and that harnessing stress can help people better prepare for high-stress environments.

Why it matters

The study provides insights into how the brain responds to stress and how people can build resilience. Understanding the neurological mechanisms behind stress tolerance could have important implications for training and preparing individuals for high-stress careers and situations.

The details

In the study, participants submerged one hand in ice-cold water while researchers monitored their brain activity in real-time using EEG. The researchers found that people who reported higher stress and pain often lasted longer in the challenge, suggesting tolerance under stress is not the absence of discomfort but how people cope with it. Those who showed more cognitive flexibility, using techniques like paced breathing and self-talk, were able to persist longer than those who tried to force control, which made their brain networks more brittle.

  • The study was recently published in the Journal of Applied Physiology.

The players

Marcelo Bigliassi

An assistant professor of psychophysiology at Florida International University who co-authored the study.

Dayanne Antonio

A Ph.D. student at Florida International University who co-authored the study.

Florida International University

The university where the research was conducted.

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What they’re saying

“We see signs that stress may involve dynamic shifts in control-network connectivity, possibly an early suppression followed by re-engagement in those who persist longer.”

— Marcelo Bigliassi, Assistant Professor of Psychophysiology (Mirage News)

“People often struggle with managing stress. I believe we can harness stress. We need to discover how individuals can use stress to their benefit.”

— Marcelo Bigliassi, Assistant Professor of Psychophysiology (Mirage News)

What’s next

The researchers say testing the moment-to-moment changes in brain connectivity will require time-resolved modeling in future studies.

The takeaway

This study suggests that building cognitive flexibility and using coping strategies like paced breathing and self-talk can help people become more resilient to stress, which has important implications for training and preparing individuals for high-stress environments.