KnowraElectroencephalographyLinked fromLinked fromThe 69 pages that link to Electroencephalography, each with the reason it gives.All 69Broader topic 2Related 59Narrower topic 4Compared with 4Functional magnetic resonance imagingCompared with: EEG tracks electrical activity directly and quickly, unlike fMRI's indirect, delayed vascular signal.PolysomnographyCompared with: Polysomnography includes EEG but adds respiratory, movement, and other channels.ElectroretinographyCompared with: Unlike EEG, ERG measures retinal responses directly, before signals travel through the optic nerve.MagnetoencephalographyCompared with: EEG detects the same broad class of neural currents, but measures scalp voltage rather than magnetic fields.