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A Free-breathing fMRI Method to Study Human Olfactory Function
Published on: July 30, 2017
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The impact of olfactory dysfunction on interoceptive awareness
Jacqueline Krajnik1, Kathrin Kollndorfer, Lisbeth A Notter
1Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria.
Psychophysiology
|August 12, 2014
Summary
Olfactory impairment negatively impacts interoception, the sense of one's internal bodily state. Longer olfactory loss correlates with poorer perception of bodily signals, affecting overall body awareness.
Area of Science:
- Neuroscience
- Sensory Processing
- Psychophysics
Background:
- Interoception involves processing internal body signals.
- Olfactory system impairment is common but its impact on interoception is not well understood.
Purpose of the Study:
- To investigate the relationship between olfactory system function and interoception.
- To determine if olfactory impairment affects the perception of internal bodily states.
Main Methods:
- Assessed interoceptive sensitivity and chemosensory performance in 77 participants.
- Included functional anosmics, hyposmics, and healthy controls.
- Measured odor detection thresholds and duration of olfactory loss.
Main Results:
- Interoceptive awareness was significantly predicted by odor detection threshold.
- Longer duration of olfactory loss correlated with diminished interoceptive awareness.
- Patients with reduced olfactory function showed poorer perception of bodily signals.
Conclusions:
- Olfactory system impairment has a detrimental effect on interoception.
- The degree of olfactory loss influences the ability to perceive internal body states.
- Findings contribute to understanding the complex effects of olfactory alterations on sensory processing.
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