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Related Experiment Video

Updated: Jun 19, 2026

Recording Human Electrocorticographic (ECoG) Signals for Neuroscientific Research and Real-time Functional Cortical Mapping
13:32

Recording Human Electrocorticographic (ECoG) Signals for Neuroscientific Research and Real-time Functional Cortical Mapping

Published on: June 26, 2012

Automated electrocorticographic electrode localization on individually rendered brain surfaces.

Dora Hermes1, Kai J Miller, Herke Jan Noordmans

  • 1Rudolf Magnus Institute of Neuroscience, University Medical Center Utrecht, Department of Neurology and Neurosurgery, Section Brainfunction and Plasticity, Utrecht, The Netherlands.

Journal of Neuroscience Methods
|October 20, 2009
PubMed
Summary

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Accurate brain surface electrocorticography (ECoG) electrode localization is crucial. This study presents a novel method using MRI and CT scans to correct for brain shift, improving electrode mapping for neurophysiology studies.

Area of Science:

  • Neuroscience
  • Medical Imaging
  • Electrophysiology

Background:

  • Electrocorticography (ECoG) offers high-resolution human brain electrophysiology.
  • Precise electrode localization is essential for accurate brain function mapping.
  • Challenges include incomplete surgical photos and brain shift post-implantation.

Purpose of the Study:

  • To develop and validate a method for accurate ECoG electrode localization.
  • To automatically correct for brain shift using preoperative MRI and postoperative CT scans.
  • To enable direct comparison of fMRI and ECoG data.

Main Methods:

  • Coregistration of preoperative MRI with postoperative CT scans.
  • Automatic correction of brain shift by projecting electrodes onto the cortical surface.

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Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings
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Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings

Published on: June 6, 2015

Related Experiment Videos

Last Updated: Jun 19, 2026

Recording Human Electrocorticographic (ECoG) Signals for Neuroscientific Research and Real-time Functional Cortical Mapping
13:32

Recording Human Electrocorticographic (ECoG) Signals for Neuroscientific Research and Real-time Functional Cortical Mapping

Published on: June 26, 2012

Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings
08:20

Brain Source Imaging in Preclinical Rat Models of Focal Epilepsy using High-Resolution EEG Recordings

Published on: June 6, 2015

  • Visualization of electrode positions on individual subject brain surface renderings.

    • Main Results:

    • The method accurately localizes ECoG electrodes, correcting for brain shift.
    • Validation showed a median difference of 2.6mm compared to surgical photographs across 6 subjects.
    • Demonstrated utility in comparing functional MRI and ECoG findings.

    Conclusions:

    • The presented method provides robust and accurate ECoG electrode localization.
    • It effectively addresses the challenge of brain shift in neurosurgical and research contexts.
    • Facilitates integrated analysis of multimodal neuroimaging data.