EEG
How electrical brain activity is recorded, analyzed, and interpreted—from scalp electrodes to study results.
The starting point
Electroencephalography, or EEG, records the brain’s electrical activity using electrodes. Reading the result takes more than recognizing a wavy line. This section follows the measurement itself: the recording setup, signal quality, analysis, and interpretation.
Questions in focus
- How was the signal recorded, referenced, and processed?
- Could movement, eye activity, or another artifact explain the result?
- What does this recording support—and what would require other evidence?
Further context
- EEG: what the test measuresMedlinePlus · National Library of Medicine
This is a topic introduction. In-depth articles will appear here after source and editorial review. Educational information is not personal medical advice.