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Adaptive Safety Coding in the Prefrontal Cortex.

Sarah M Tashjian1,2, Joseph Cussen1, Wenning Deng2

  • 1School of Psychological Sciences, University of Melbourne, Parkville, VIC 3052, Australia.

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Summary
This summary is machine-generated.

The brain dynamically encodes safety by integrating external threats and self-protection abilities. The ventromedial prefrontal cortex (vmPFC) plays a key role in this process, particularly in how protection influences safety perception.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Decision Making

Background:

  • Self-preservation relies on distinguishing safety from danger.
  • Prior research on safety estimation overlooked self-protection capabilities.
  • The brain's dynamic encoding of safety requires further investigation.

Purpose of the Study:

  • To investigate the neural systems underlying the online, dynamic encoding of safety.
  • To examine how the brain integrates external threats and self-protection for safety estimation.
  • To test four facets of safety estimation: Safety Prediction, Meta-representation, Recognition, and Value Updating.

Main Methods:

  • Utilized two novel tasks to experimentally manipulate safety estimation.
  • Varied levels of external threats and self-protection to assess their impact.
  • Collected data from two independent samples: behavioral (N=100) and fMRI (N=30).

Main Results:

  • Subjective sensitivity to safety conferred by protection consistently changed.
  • Neural responses in the ventromedial prefrontal cortex (vmPFC) tracked safety increases across all facets.
  • The vmPFC showed specific tuning to protection, with distinct hubs for threat and protection coding.

Conclusions:

  • The ventromedial prefrontal cortex (vmPFC) is central to coding safety.
  • Safety estimation dynamically integrates external threats and internal self-protection capacities.
  • Distinct vmPFC regions differentially process threat and protection information for safety.