The routine EEG is the most common test for epilepsy. The actual recording usually lasts only 20 to 40 minutes, and the same amount of time is generally needed to prepare for it.

The routine EEG is the most common test for epilepsy. The Archer Medical EEG Technologist first measures the patient’s head so that the electrodes, which are small, metal, cup-shaped disks attached to wires, can be placed in the correct position. A wax crayon, which can be easily washed off later, is used to mark the points on the scalp. Next, the Archer Medical EEG Technologist applies the electrodes, usually using a paste that holds them in place for up to several hours.

The Archer Medical EEG Technologist often scrubs each position on the scalp with a mildly abrasive cream before applying the electrodes. This will help improve the quality of the recording.the brain waves as a series of waveforms called traces.

The electrodes only record the brain waves. They do not stimulate the head with electricity, and pose no danger to the patient. The EEG equipment then digitally records the brain waves as a series of waveforms called traces.