Electrocorticogram (ECoG)
Positives
- Resolution considerably better than EEG
- Provides opportunity for multi-channel control
- More direct correlation to activity
- Less artifact than EEG
- Event-related potentials (ERPs) easily found
Negatives
- Moderately invasive
- Limited study opportunities
Subjects
- University of Michigan Epilepsy Surgery Program
- Henry Ford Hospital Epilepsy Surgery Program
- Epilepsy surgery patients with electrodes implanted for monitoring
purposes only.(not for direct brain interface investigation )
Signal Source
- Subdural implantation
- Location selected for epilepsy monitoring
- Macro electrodes
- 4 mm diameter
- 1 cm center-to-center
- Grids and/or strips
- 4 - 126 electrodes
Electrodes Placed for Epilepsy Monitoring
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Titles and
Participants
Preliminary Work--University of Michigan
and Henry Ford Hospitals
Preliminary
Work--Technical University Graz
Future
Work: NIH Bioengineering Research Partnership