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Know thyself: Exploring interoceptive sensitivity in Parkinson's disease.

Lucia Ricciardi1, Gina Ferrazzano2, Benedetta Demartini3

  • 1Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, University College London, London, UK.

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|April 17, 2016
PubMed
Summary
This summary is machine-generated.

Parkinson's disease patients exhibit reduced interoceptive sensitivity, impacting their perception of internal bodily sensations. This finding may offer new insights into the emotional and affective symptoms associated with Parkinson's disease.

Keywords:
EmotionFatigueInteroceptionNon-motor symptomsParkinson's disease

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Area of Science:

  • Neuroscience
  • Psychology

Background:

  • Parkinson's disease (PD) is characterized by motor symptoms, but cognitive, affective, and emotional impairments are also prevalent.
  • The pathophysiology of non-motor symptoms (NMS) in PD is unclear, with recent focus on limbic areas like the insula.
  • The insula is crucial for interoception, the perception of internal bodily sensations.

Purpose of the Study:

  • To assess interoceptive sensitivity (IS) in Parkinson's disease patients using the heartbeat perception task.
  • To explore correlations between IS and psychological, affective, and disease-related factors in PD patients.

Main Methods:

  • Twenty Parkinson's disease patients and 20 healthy subjects participated.
  • Participants underwent the heartbeat perception task to measure IS.
  • Comprehensive assessments of motor, non-motor, affective, and emotional domains were conducted.

Main Results:

  • Parkinson's disease patients demonstrated significantly lower IS compared to healthy subjects (0.58 vs. 0.72, p=0.04).
  • PD patients reported higher levels of depression, anhedonia, and apathy.
  • No significant correlations were found between IS and motor, non-motor, affective, or emotional symptoms.

Conclusions:

  • Parkinson's disease is associated with diminished interoceptive sensitivity.
  • Further research is warranted to understand the role of interoception in the affective and emotional disturbances seen in PD.