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Interoception and embodiment in patients with bilateral vestibulopathy
Estelle Nakul1, Charles Dabard1, Michel Toupet2,3
1Aix Marseille Univ, CNRS, LNSC, Marseille, France.
Journal of Neurology
|October 13, 2020
Summary
Long-term bilateral vestibulopathy (BVP) does not affect cardiac interoception or sense of self. However, greater self-body closeness correlates with improved cardiac interoception in both patients and controls.
Area of Science:
- Neuroscience
- Psychology
- Physiology
Background:
- The vestibular and interoceptive systems are functionally and anatomically linked, underpinning emotional processes and the sense of bodily self.
- The impact of long-term bilateral vestibulopathy (BVP) on interoception, embodiment, and selfhood remains unexplored.
Purpose of the Study:
- To investigate how long-term BVP affects cardiac interoceptive accuracy, confidence, and body awareness.
- To examine the relationship between BVP, interoception, embodiment, and the sense of self.
Main Methods:
- Compared 25 BVP patients and healthy controls using a heartbeat tracking task.
- Assessed interoceptive awareness, self-localization, and self-body closeness via self-reports.
- Analyzed cardiac interoceptive accuracy and confidence in performance.
Main Results:
- No significant differences were found between BVP patients and controls in cardiac interoceptive accuracy, confidence, or body awareness.
- Self-location and self-body closeness did not differ between the patient and control groups.
- A positive correlation was observed between interoceptive accuracy and self-body closeness across all participants.
Conclusions:
- Long-term BVP does not appear to impair cardiac interoception or alter the sense of embodiment.
- Increased self-body closeness is associated with enhanced cardiac interoception, supporting its role in the sense of embodiment.
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