# Electroencephalography **Entity class:** Concept or analytic term **Domain:** Neurophysiology / Neural Interfaces **Doc Type:** Scientific Concept Node **Maturity:** Established **Related:** [[Non-Invasive BCI]], [[wiki/BIDS-EEG|BIDS-EEG]], [[Polysomnography]], [[DICOM Working Group 32]] --- ## Definition **Electroencephalography (EEG)** records voltage fluctuations at the scalp produced by coordinated neural activity. EEG offers millisecond-scale temporal resolution, relatively accessible hardware, and direct relevance to BCI control, sleep studies, epilepsy monitoring, evoked potentials, and longitudinal neurophysiology. ## Data requirements Interpretation depends on electrode montage and positions, reference scheme, sampling rate, impedance, vigilance state, filters, events, medications, and acquisition device. [[wiki/BIDS-EEG|BIDS-EEG]] and [[wiki/ISO-IEC TS 27571-2026|ISO/IEC TS 27571:2026]] address complementary parts of that descriptive structure. ## Neurotech source route **Collection:** [[collections/Neurotech|Neurotech]] **Source article:** [[articles/The Organic-Synthetic Brain Atlas|The Organic-Synthetic Brain Atlas]] ## Relationships [[wiki/Electroencephalography|Electroencephalography]] is related to [[wiki/Brain-Computer Interfaces|Brain-Computer Interfaces]] as scalp-level electrical brain-signal acquisition. <!-- BEGIN HUMANIZED RELATIONSHIPS 2026-09-11 --> This entry's documented connections are expressed in its definition and related-work routes, with provenance retained in the source-linked material. <!-- END HUMANIZED RELATIONSHIPS 2026-09-11 --> ## Neurotech cluster route **Collection:** [[collections/Neurotech|Neurotech]] **Source articles:** [[articles/The Architecture of Continuity and Emerging Neuroinformatics Standards|The Architecture of Continuity and Emerging Neuroinformatics Standards]] · [[articles/The Organic-Synthetic Brain Atlas|The Organic-Synthetic Brain Atlas]] ## Related Work in the Corpus <!-- BEGIN HUMANIZED CORPUS ROUTES 2026-09-11 --> - In [[articles/The Organic-Synthetic Brain Atlas|The Organic-Synthetic Brain Atlas]], **VII.2 — Wearable EEG and the Consumer Brain-Signal Layer** provides the narrative context for **Electroencephalography**: Conventional electroencephalography uses scalp electrodes to record the summed electrical activity of large populations of cortical neurons, with millisecond-scale temporal resolution but centimeter-scale spatial blur due to… - In [[articles/The Architecture of Continuity and Emerging Neuroinformatics Standards|The Architecture of Continuity and Emerging Neuroinformatics Standards]], ****3\. Standardization of Brain-Computer Interfaces (BCI)**** provides the narrative context for **Electroencephalography**: Acquisition modalities: EEG · ECoG · MEG · fNIRS · fMRI · EMG · EOG · PSG. <!-- END HUMANIZED CORPUS ROUTES 2026-09-11 -->