Cortical surface (ECoG sites)
Gyral recordings for language, motor and seizure mapping.
“Anatomy” here is electrode anatomy: grids on gyral surfaces, strips in sulci and depth leads targeting deep nodes like hippocampus or insula.
Signal sources are local field potentials summing synaptic currents — not single spikes unless dedicated microelectrodes are used.
Structures
Hippocampus / MTL (depth)
Common SEEG targets for temporal lobe epilepsy and memory tasks.
Insula
Deep coverage for seizures and interoceptive paradigms.
Sensorimotor cortex
High-gamma mapping of movement and somatotopy.
Language cortex (STG / IFG)
Eloquent-area mapping before resection.
Thalamic / deep nuclei (selected)
Occasional depth targets for network seizures or DBS planning.
Pathways
Local cortical circuits
Primary generators of high-gamma task responses.
Cortico-cortical white matter
Propagates seizures and task-related coherence.
Hippocampal–neocortical loops
Memory encoding dynamics visible on depth leads.
Thalamocortical relays
Contribute to rhythms and some seizure networks.
Landmarks
Grid implantation surgery
Clinical gateway to surface recordings.
SEEG trajectory planning
MRI-guided paths through networks of interest.
Cortical stimulation mapping
Causal probe of language and motor sites.
High-gamma task epochs
Analytic window for cognitive iEEG studies.
Open atlas neighbours: cortex, hippocampus, insula, thalamus.
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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