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Related Experiment Video

Updated: May 14, 2026

Quantifying Pain Location and Intensity with Multimodal Pain Body Diagrams
09:00

Quantifying Pain Location and Intensity with Multimodal Pain Body Diagrams

Published on: July 7, 2023

Postural correlates with painful situations.

Thierry Lelard1, Benoît Montalan, Maria F Morel

  • 1EA 4559, Laboratoire de Neurosciences Fonctionnelles et Pathologies, UFR de Médecine, Université de Picardie Jules Verne Amiens, France ; Structure Fédérative de Recherche en Santé CAP-Santé, Université de Picardie Jules Verne, Amiens and Université de Reims-Champagne-Ardennes Reims, France.

Frontiers in Human Neuroscience
|February 7, 2013
PubMed
Summary
This summary is machine-generated.

Imagining painful situations alters body posture and leg muscle activity. This study shows that emotional context significantly impacts movement control and muscle responses.

Keywords:
affiliationembodimentempathy for painposturographysocioaffective neuroscience

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Area of Science:

  • Embodied cognition
  • Motor control
  • Psychophysiology

Background:

  • Emotional states are theorized to influence motor system function.
  • Simulation theories suggest that imagining an emotion activates similar neural and physiological systems as experiencing it.
  • Understanding the link between emotional context and movement is crucial for fields like rehabilitation and sports psychology.

Purpose of the Study:

  • To investigate the impact of imagined painful versus non-painful situations on postural control.
  • To compare electromyographic (EMG) activity in leg muscles during simulated emotional states.
  • To assess physiological responses, including heart rate and electrodermal activity, in relation to imagined emotional contexts.

Main Methods:

  • Twenty-nine healthy adults stood on a posturographic platform.
  • Participants were instructed to vividly imagine either a painful or a non-painful scenario.
  • Postural sway (center of pressure displacement) and leg muscle EMG (tibialis anterior, soleus) were recorded.

Main Results:

  • Imagining painful situations led to a shorter anteroposterior center of pressure path, indicating altered postural control.
  • Increased activity and variability were observed in the tibialis anterior and soleus muscles, respectively, during painful simulations.
  • No significant changes in heart rate or electrodermal activity were found between conditions.

Conclusions:

  • Simulating painful situations significantly alters postural control and leg muscle activation patterns.
  • The findings support the role of emotional context in modulating motor responses.
  • Increased postural stiffness in response to imagined pain aligns with previous research on aversive stimuli.