What is Electroencephalography (EEG)?

EEG is a test that can be taken at any time regardless of whether the patient is asleep or awake. For the accuracy of the EEG, it may be necessary to take the EEG both while sleeping and awake. The hair of the individual who will undergo EEG should be clean. Your hair can prevent dirty signals from being transmitted to the brain and prevent getting the correct result. No substance (cream, oil, gel) should be applied to the hair except clean hair. The waves of the brain are measured with the help of tools called electrodes, which are glued to the patient’s scalp with a special adhesive, and these waves are transferred to the monitor through the cables and thus the waves of the brain are visualized. Placing the electrodes at the right points on the scalp is important to obtain clearer and more accurate data. In routine EEG, these data are available for an average of 20 to 40 minutes.

This time is longer in other EEGs and may vary in each patient. When performing EEG, the patient should be placed on the stretcher and the eyes should be closed and kept quiet and stable during EEG. Personnel may ask you to open and close your eyes, look at a picture or a blinking light, or take deep breaths during EEG. These are required for EEG. The patient whose EEG was taken on the sleep EEG while the patient was sleeping should be insomniac. Because the patient should sleep while the EEG is performed. If the patient is not sleepless, this can be achieved with the help of a drug.

Why is Electroencephalography (EEG) Performed?

  • Seizure disorders (Epilepsy)
  • Head injuries
  • Encephalitis
  • Tumor of the brain
  • Encephalopathy (cause of brain dysfunction)
  • Memory problems
  • Sleep Disorders
  • Stroke
  • Senility (Alzheimer’s)

Dormant EEG

Sleep helps develop abnormal electrical activity in the brain. In cases where the EEG performed for 20 minutes while awake does not provide sufficient information for the diagnosis of epilepsy, an EEG is taken during sleep. Sleep EEG is one of the most commonly used activation methods. Anesthetic agent should not be preferred because it affects brain activity and suppresses possible electrical discharges in order to put the person to sleep.

It is beneficial for the patient to be sleepless the night before coming to this type of shooting, as it will both facilitate daytime sleep and increase the likelihood of abnormal brain waves occurring.

The information on this page has been prepared by the Moodist Psychiatry and Neurology Hospital Medical Team.

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