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Breathlessness amplifies amygdala responses during affective processing.

M Cornelia Stoeckel1, Roland W Esser1, Matthias Gamer1,2

  • 1Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

Psychophysiology
|April 19, 2018
PubMed
Summary
This summary is machine-generated.

Breathlessness amplifies amygdala responses to affective stimuli. This brain region, the amygdala, plays a key role in how breathlessness interacts with emotional states.

Keywords:
affectamygdalabreathlessnessdyspneathreat

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Area of Science:

  • Neuroscience
  • Psychology
  • Medical Research

Background:

  • Breathlessness is a distressing symptom in many illnesses, often linked to negative emotions.
  • The neural mechanisms connecting breathlessness and affect are not well understood.

Purpose of the Study:

  • To investigate how breathlessness affects neural processing of emotional visual stimuli.
  • To examine the role of the amygdala, insula, and anterior cingulate cortex (ACC) in this process.

Main Methods:

  • fMRI scans were conducted on 42 healthy volunteers.
  • Participants viewed affective images (negative, neutral, positive) under normal breathing and breathlessness conditions (induced by resistive load).
  • Self-reported breathlessness intensity and unpleasantness were recorded.

Main Results:

  • Breathlessness was successfully induced, with significantly higher self-reported intensity and unpleasantness.
  • The amygdala showed increased activation during breathlessness when viewing both negative and positive images compared to neutral images.
  • No significant effects were observed in the insula or ACC.

Conclusions:

  • Breathlessness intensifies amygdala responses to emotional visual stimuli.
  • The amygdala is crucial for mediating the interplay between breathlessness and emotional experiences.