EEG quality depends on preparation and on how clearly episodes are described.
Sleep requirements and timing often affect how the test should be planned.
An EEG preparation checklist
Hair washing, sleep instructions, medications, and symptom timing all matter.
Medical boundary: This content is for health education, test preparation, and care discussions only. It does not replace professional medical advice.
References
- MedlinePlus Medical Tests
Used for introductory lab and exam explanations.
- American Heart Association Risk Information
Used for cardiovascular risk factor framing.