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Related Experiment Video

Updated: May 30, 2026

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
09:57

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy

Published on: September 20, 2024

Evaluation of the pain matrix using EEG source localization: a feasibility study.

Leslie S Prichep1, E Roy John, Bryant Howard

  • 1Brain Research Laboratories, Department of Psychiatry, NYU School of Medicine, New York City, NY 10016, USA. Leslie.Prichep@nyumc.org

Pain Medicine (Malden, Mass.)
|August 4, 2011
PubMed
Summary

Quantitative electroencephalography (QEEG) can measure brain activity in the pain matrix, reflecting pain intensity. This study shows QEEG feasibility for quantifying pain-related neural activity in chronic pain patients.

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Area of Science:

  • Neuroscience
  • Pain Research
  • Medical Imaging

Background:

  • Chronic pain is associated with altered brain activity in the
  • pain matrix,
  • shown by neuroimaging studies.
  • Specific regions within the pain matrix encode pain intensity.
  • Quantitative electroencephalography (QEEG) offers a potential method for assessing brain activity.

Purpose of the Study:

  • To demonstrate the feasibility of using QEEG source localization to reflect and quantify activity in the pain matrix.
  • To correlate QEEG findings with subjective pain ratings.

Main Methods:

  • Resting-state EEG was recorded from 19 scalp locations in five chronic neuropathic pain patients before and after pain reduction.
  • QEEG source localization was used to estimate neural generators of EEG potentials.

Related Experiment Videos

Last Updated: May 30, 2026

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
09:57

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy

Published on: September 20, 2024

  • QEEG sources were validated against established neuroimaging methods.

    • Main Results:

    • QEEG identified frequency-specific increased neuronal activity in pain matrix structures (thalamus, somatosensory cortex, insula, prefrontal cortex, cingulate) during high pain states.
    • Significant reductions in activation were observed in these regions when pain decreased by ≥50% subjectively.
    • Activated areas in high pain states corresponded to regions identified by other neuroimaging techniques.

    Conclusions:

    • QEEG successfully localized frequency- and region-specific brain activity within the pain matrix.
    • These findings suggest QEEG may reveal distinct pathophysiological patterns in chronic pain.
    • QEEG shows promise as a clinical tool for exploring and quantifying pain matrix activity.