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Related Experiment Video

Updated: Jun 2, 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

Rapid online language mapping with electrocorticography.

Kai J Miller1, Taylor J Abel, Adam O Hebb

  • 1Department of Neurological Surgery, University of Washington, Seattle, Washington 98195, USA. kjmiller@uw.edu

Journal of Neurosurgery. Pediatrics
|May 3, 2011
PubMed
Summary
This summary is machine-generated.

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Broadband electrocorticography (ECoG) effectively maps brain language areas online. This new method aids in identifying crucial cortical functions during surgery and for chronic implant patients.

Area of Science:

  • Neuroscience
  • Neurosurgery
  • Brain-computer interfaces

Background:

  • Electrocorticography (ECoG) measures brain activity.
  • Broadband ECoG signals may reveal cortical functional organization.
  • Online functional mapping is crucial for neurosurgery.

Purpose of the Study:

  • To demonstrate online identification of receptive and expressive language areas using broadband ECoG.
  • To assess the efficacy of integrated broadband ECoG for functional mapping.

Main Methods:

  • Assessed broadband spectral change in ECoG signals (76-200 Hz) using band-pass filtering.
  • Integrated ECoG activity during a verb-generation task in 7 epilepsy patients.
  • Characterized baseline activity for <10 seconds before task performance.

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Functional Mapping with Simultaneous MEG and EEG

Published on: June 14, 2010

Related Experiment Videos

Last Updated: Jun 2, 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

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

Functional Mapping with Simultaneous MEG and EEG
06:04

Functional Mapping with Simultaneous MEG and EEG

Published on: June 14, 2010

Main Results:

  • Consistently identified cortical activation in language areas (Broca's, Wernicke's) and motor cortex.
  • Activation maps were robust within a mean of 47 seconds.
  • Correlation with electrocortical stimulation was stronger for noun reading than verb generation.

Conclusions:

  • Online capture of broadband ECoG changes can identify eloquent cortex.
  • This offers a powerful new tool for intraoperative and chronic implant functional mapping.