ECoG grids / strips
Surface sampling for mapping and research.
Methods include implantation planning, continuous video-EEG, cortical stimulation, high-gamma analytics and careful statistics under sparse sampling.
Triangulate with imaging and behaviour; do not overclaim from a few contacts.
Tools
SEEG depth electrodes
3D network coverage with smaller openings.
Video-EEG monitoring units
Capture seizures with behavioural context.
Cortical stimulation systems
Causal mapping of language and motor function.
High-gamma / time-frequency toolkits
Extract task-related broadband power.
MRI co-registration
Locate contacts in individual anatomy.
Protocols
Pre-implant multimodal conference
Align hypotheses before electrode placement.
Ictal onset review boards
Consensus reading of seizure starts.
Cognitive task batteries (optional)
Only when clinically compatible and consented.
Sham / control contrasts in research
Guard against arousal confounds in high-gamma.
Limits
Sampling bias
Clinical targets ≠ random brain coverage.
Pathology confounds
Epileptic tissue may alter “normal” dynamics.
Generalisation limits
Findings from few patients need replication.
Preregister cognitive analyses when possible; clinical care comes first.
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
Keep exploring
More in Methods
🧲
fMRI
Blood-oxygen signals that map task and resting-state networks.
Research 70 📈EEG
Millisecond electrical rhythms from scalp and intracranial arrays.
Research 95 💉PET
Molecular imaging of metabolism, receptors and pathology tracers.
Research 79 📡TMS
Noninvasive magnetic pulses that briefly perturb cortical circuits.
Research 70 💡Optogenetics
Light-gated control of genetically defined neuron populations.
Research 58 🕸️Connectomics
Mapping wiring diagrams from synapse to whole-brain networks.
Research 79 📡MEG
Millisecond magnetic fields that map cortical dynamics noninvasively.
Research 83 🧭Diffusion MRI
Water diffusion that reveals white-matter pathways in vivo.
Research 51