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Updated: Jun 1, 2026
12:51
Investigating the Neural Mechanisms of Aware and Unaware Fear Memory with fMRI
Published on: October 6, 2011
Learning to fear obstructed breathing: comparing interoceptive and exteroceptive cues
Meike Pappens1, Omer Van den Bergh, Debora Vansteenwegen
1Research Group on Health Psychology, University of Leuven, Tiensestraat 102 box 3726, B-3000 Leuven, Belgium.
Biological Psychology
|June 7, 2011
Summary
This study shows that respiratory load can condition fear responses. Both internal (interoceptive) and external (exteroceptive) cues effectively predicted the load, influencing physiological and self-reported fear.
Area of Science:
- Psychology
- Neuroscience
- Physiology
Background:
- Fear conditioning is a fundamental learning process.
- Interoceptive fear conditioning (IFC) explores fear responses to internal bodily sensations.
- Understanding IFC is crucial for anxiety and phobia research.
Purpose of the Study:
- To investigate interoceptive fear conditioning (IFC) using both interoceptive and exteroceptive cues.
- To examine physiological and self-reported fear responses to a respiratory load.
- To compare conditioning effects between internal and external conditional stimuli (CS).
Main Methods:
- Two studies were conducted: intero-IFC (N=74) with a weak respiratory load as CS, and extero-IFC (N=42) with a neutral picture as CS.
- A severe respiratory load served as the unconditional stimulus (US).
- Measures included startle blink electromyography (EMG), self-reported fear, and respiration (rate, tidal volume).
Main Results:
- In intero-IFC, the CS-load predicted larger startle blinks and reduced respiratory rate/tidal volume compared to unpaired controls.
- In extero-IFC, the CS-picture elicited increased tidal volume and self-reported fear only in the paired group.
- Startle potentiation was greater for the CS-picture in the paired group.
Conclusions:
- Interoceptive fear conditioning is achievable with respiratory load as the US.
- Both internal and external cues can effectively predict aversive respiratory sensations.
- Findings contribute to understanding how bodily sensations influence fear learning and anxiety.
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