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Applying Advanced In Vitro Culturing Technology to Study the Human Gut Microbiota
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Human threat learning is associated with gut microbiota composition.

Javiera P Oyarzun1,2, Thomas M Kuntz3, Yoann Stussi1

  • 1Department of Psychology, Harvard University, Cambridge, MA 02138, USA.

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PubMed
Summary
This summary is machine-generated.

The gut microbiome influences threat learning in humans, but not extinction learning. This suggests a link between gut bacteria and how we perceive danger, a finding consistent across species.

Keywords:
anxietygut microbiotahumanslearningthreat conditioning

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Area of Science:

  • Neuroscience
  • Microbiology
  • Behavioral Science

Background:

  • Learning about threats and safety is crucial for survival.
  • Rodent studies indicate the gut microbiota can influence these behaviors.
  • Human data linking gut microbiota to threat or extinction learning is limited.

Purpose of the Study:

  • To investigate the relationship between individual gut microbiota composition and threat/extinction learning in healthy adults.
  • To determine if gut bacteria variability is associated with differences in learning about threats and safety.

Main Methods:

  • Assessed individual differences in threat and extinction learning in human participants.
  • Analyzed the composition of the gut microbiota in the same participants.
  • Correlated behavioral learning measures with microbiome data.

Main Results:

  • Significant association found between gut microbiota composition and threat learning variability.
  • No significant association was observed between gut microbiota and extinction learning.
  • Threat learning, unlike extinction learning, showed individual differences linked to microbiome profiles.

Conclusions:

  • The gut microbiota is associated with excitatory threat learning in humans.
  • Findings extend across species, suggesting a conserved role for the gut microbiome in threat perception.
  • Individual gut microbiome composition may contribute to variations in threat learning.