EEG/elektroencephalography
It is a method that records the electrical activity of the cerebral cortex from the surface of the scalp. It is used as a supportive diagnostic tool for various conditions and disorders, such as epilepsy, impaired consciousness, headaches, neurodegenerative diseases, neuroinfections, tumors, consequences of brain injury, and after brain surgery. The examination is performed by a trained nurse in our EEG laboratory. The procedure is not painful.
The examination consists of placing a cap with electrodes on the head and applying a special gel to the scalp. A standard (resting) EEG takes approximately 30 minutes including preparation. A sleep‑deprived EEG recording takes about 45 minutes. The examination is performed while lying down. The nurse will instruct you when to close or open your eyes and when to breathe through your nose or mouth. Photostimulation is also used (with the patient's eyes closed, flashing light is applied).
EEG can be safely performed on pregnant women as well as patients with a pacemaker.
Before the EEG examination, we recommend:
Wash your hair and scalp the evening before the examination; do not use hairspray, mousse, or gel.
Do not take sleeping medication the night before the examination.
You must arrive sober and well‑rested.
Bring a towel with you on the day of the examination.
Wash your hair and scalp the evening before the examination; do not use hairspray, mousse, or gel.
Do not take sleeping medication the night before the examination.
You must arrive sober and well‑rested.
Bring a towel with you on the day of the examination.
For patients scheduled for a sleep‑deprived EEG, the preparation is as follows: the patient must remain awake throughout the entire day. Sleep is allowed only between 00:00 and 04:00. If you experience significant fatigue or drowsiness, please inform the nurse before the examination.
