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Updated: May 11, 2026
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Psychophysically-anchored, Robust Thresholding in Studying Pain-related Lateralization of Oscillatory Prestimulus Activity
Published on: January 21, 2017
Individual differences in pain sensitivity vary as a function of precuneus reactivity
Philippe Goffaux1, Lydia Girard-Tremblay, Serge Marchand
1Département de chirurgie, Neurochirurgie, Faculté de Médecine, Université de Sherbrooke, 3001, 12e avenue nord, Sherbrooke, QC, J1H 5N4, Canada, Philippe.Goffaux@USherbrooke.ca.
Brain Topography
|May 3, 2013
Summary
Individual differences in pain sensitivity are linked to brain activity in the precuneus, not pain representation itself. Understanding pain sensitivity is crucial for preventing chronic pain conditions.
Area of Science:
- Neuroscience
- Pain Research
- Human Variability
Background:
- Individual differences in pain sensitivity are significant but poorly understood.
- Baseline pain sensitivity is linked to the risk of developing chronic pain.
Purpose of the Study:
- To investigate the neural correlates of pain sensitivity variability in humans.
- To differentiate the neural systems underlying pain sensitivity from those involved in pain representation.
Main Methods:
- Utilized a matched perception paradigm to control for subjective experiences.
- Measured subjective pain reports, nociceptive flexion reflexes, and somatosensory evoked brain potentials.
- Applied source localization analysis to map brain responses to pain.
Main Results:
- Pain sensitivity in healthy adults strongly correlated with pain-evoked neural responses in the contralateral precuneus.
- The precuneus was not involved in the direct representation of pain within the brain.
Conclusions:
- Pain sensitivity and pain representation are mediated by distinct neuronal sub-systems.
- The contralateral precuneus plays a key role in modulating pain sensitivity, not in the conscious perception of pain itself.
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