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Area of Science:

  • Neuroscience
  • Psychology
  • Medical Imaging

Background:

  • Interoceptive information processing is crucial, involving brain regions like the insula and anterior cingulate cortex.
  • The specific brain functional connectivity patterns underlying interoceptive sensibility (IS) and their link to bodily symptoms are not well understood.

Purpose of the Study:

  • To investigate intrinsic functional connectivity patterns associated with IS.
  • To determine how these patterns modulate the relationship between IS and self-reported bodily symptoms.

Main Methods:

  • Resting-state functional magnetic resonance imaging (fMRI) was employed on 459 healthy participants.
  • Interoceptive sensibility (IS) and self-reported bodily symptoms were assessed using validated questionnaires.

Main Results:

  • Greater IS was associated with a higher tendency to report bodily symptoms.
  • Increased IS correlated with reduced connectivity in specific pathways, including the ventral anterior insula-superior temporal gyrus.
  • Functional connectivity between large-scale brain networks (e.g., CON-DMN) moderated the IS-bodily symptom association.

Conclusions:

  • Interoceptive sensibility (IS) may be linked to impaired functional connectivity in brain areas involved in sensory integration and cognitive-affective control.
  • This altered connectivity could lead to heightened attention towards bodily signals.
  • Findings provide empirical support for understanding the complex relationship between interoception and symptom reporting.