Which statement is correct regarding teaching for an electroencephalogram (EEG)?

Which statement is correct regarding teaching for an electroencephalogram (EEG)?

• A. The test is not painful, as electrodes are placed on the head
• B. You must avoid washing your hair before the test
• C. The test requires anesthesia
• D. Electrodes are implanted

Answer: (A)

Electroencephalography records the brain’s electrical activity using small sensors placed on the scalp, so nothing enters the body and there are no needles or incisions. That noninvasive setup is why the test is painless—the sensors sit on the surface of the head rather than being inserted. Hair care supports good signal quality, so washing the hair beforehand is typically fine and helpful to ensure the electrode paste or gel adheres well; you don’t need to avoid washing. Anesthesia isn’t used for a routine EEG, and implanted electrodes would indicate invasive monitoring rather than a standard EEG.

Electroencephalography records the brain’s electrical activity using small sensors placed on the scalp, so nothing enters the body and there are no needles or incisions. That noninvasive setup is why the test is painless—the sensors sit on the surface of the head rather than being inserted. Hair care supports good signal quality, so washing the hair beforehand is typically fine and helpful to ensure the electrode paste or gel adheres well; you don’t need to avoid washing. Anesthesia isn’t used for a routine EEG, and implanted electrodes would indicate invasive monitoring rather than a standard EEG.