Clinical mapping
Localise seizure onset and eloquent cortex.
Darker cells mean a higher score for this topic on that metric.
Research82
Awareness45
Complexity85
Clinical weight75
Plasticity40
Live debate60
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Last reviewed Sources & creditsMedia creditsMethodology
Quick answers
What is intracranial EEG iEEG/ECoG?
Electrodes on or in the brain during clinical mapping — millimetre-scale timing that scalp EEG blurs. Teaching description of published methods.
When did Penfield-era cortical stimulation map speech?
Mid-20th-century Montreal work made awake mapping famous. Modern grids and stereo-EEG continue the classroom story without copying an OR checklist.
Is this a guide to implant surgery or dosing?
No. Educational methods atlas. Not a diagnosis, implant protocol, or medication dose.
What can iEEG resolve that scalp methods smear?
When and where populations engage during perception, speech, memory or movement — at scales scalp EEG averages away.
Research score 82 — a clinic ranking?
No. Editorial 0-100 in this methods field. Compare with EEG, fMRI and MEG neighbours.
Why do overview pages get clicks?
They name ECoG sites and cortical surface mapping early. Keep reading Overview, Anatomy, Function; do not self-schedule a procedure.
iEEG sits at the intersection of epilepsy surgery and cognitive neuroscience: clinical necessity enables millimetre–millisecond human data.
This page maps promises and hard limits without selling consumer brain implants.
Pillars
High-frequency dynamics
High-gamma and ripple-band windows onto population activity.
Task neuroscience
Perception, language and memory paradigms in surgical patients.
Ethical constraints
Sparse coverage, consent and no healthy-volunteer implant.
Key facts
Spatial scale
Millimetres near cortical generators.
Temporal bandwidth
Kilohertz sampling captures high-gamma.
ECoG vs SEEG
Surface grids versus depth trajectories.
Clinical first
Research piggybacks on indicated monitoring.
Sparse sampling
Electrodes follow surgical plans, not whole-brain maps.
Decoding limits
Task-linked signals ≠ reading private thoughts.
Pair with Epilepsy, Language, Motor Control and Methods neighbours.
Sources & research
- Promises and limitations of human intracranial electroencephalographyPromises and limits of human iEEG.DOI
- High-frequency neural activity and human cognition: past, present and possible future of intracranial EEG researchHigh-frequency activity and cognition review.DOI
- High-frequency gamma oscillations and human brain mapping with electrocorticographyHigh-gamma mapping with ECoG.DOI
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