Electroencephalography
E873101
Electroencephalography is a noninvasive neurophysiological technique that records electrical activity of the brain via scalp electrodes to study brain function and diagnose neurological conditions.
Statements (60)
| Predicate | Object |
|---|---|
| instanceOf |
brain imaging modality
ⓘ
diagnostic test ⓘ neurophysiological technique ⓘ noninvasive procedure ⓘ |
| abbreviation | EEG ⓘ |
| analyzes | brain waves ⓘ |
| canBe |
ambulatory home monitoring
ⓘ
continuous for intensive care monitoring ⓘ routine outpatient study ⓘ |
| canDetect |
epileptiform discharges
ⓘ
focal slowing ⓘ generalized spike-and-wave patterns ⓘ periodic discharges ⓘ sleep stages ⓘ |
| canRecordFrom | intracranial electrodes in special cases ⓘ |
| contraindications | very few absolute contraindications ⓘ |
| dataAnalyzedBy |
clinical neurophysiologist
ⓘ
neurologist with EEG training ⓘ |
| developedIn | early 20th century ⓘ |
| firstHumanEEGRecordedBy | Hans Berger GENERATED ⓘ |
| firstHumanEEGRecordedInYear | 1924 GENERATED ⓘ |
| hasAdvantage |
high temporal resolution
ⓘ
relatively low cost ⓘ tolerance of movement compared to some imaging methods ⓘ |
| hasRhythm |
alpha waves
ⓘ
beta waves ⓘ delta waves ⓘ gamma waves ⓘ theta waves ⓘ |
| hasSpatialResolution | low compared to fMRI ⓘ |
| hasTypicalTemporalResolution | milliseconds ⓘ |
| isNoninvasive | true ⓘ |
| isPortable | sometimes ⓘ |
| limitation |
poor spatial localization of deep sources
ⓘ
sensitivity to artifacts from muscles and eyes ⓘ |
| measures | electrical activity of the brain ⓘ |
| oftenCombinedWith |
event-related potential analysis
ⓘ
functional magnetic resonance imaging ⓘ magnetoencephalography ⓘ |
| oftenUses | 10–20 system for electrode placement NERFINISHED ⓘ |
| pioneer | Hans Berger NERFINISHED ⓘ |
| primarilyReflects | postsynaptic potentials of cortical pyramidal neurons GENERATED ⓘ |
| records | voltage fluctuations resulting from ionic current within neurons ⓘ |
| recordsFrom | scalp ⓘ |
| requires | conductive gel or paste ⓘ |
| safetyProfile | generally safe ⓘ |
| usedFor |
brain death assessment
ⓘ
brain–computer interface research ⓘ cognitive neuroscience experiments ⓘ diagnosis of encephalopathy ⓘ diagnosis of epilepsy ⓘ diagnosis of seizure disorders ⓘ diagnosis of sleep disorders ⓘ evaluation of altered mental status ⓘ evaluation of focal brain lesions ⓘ localization of epileptic foci ⓘ monitoring coma patients ⓘ monitoring depth of anesthesia ⓘ neurophysiological research ⓘ |
| uses | scalp electrodes ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.