Skip to main content


Modern Quality Neurology Care

About Us
EEG/ Ambulatory VIdeoEEG
Sleep Lab
FAQ Sleep Study
Contact Us
Site Map
Member Login
          An electroencephalogram (EEG) is a safe and painless test that measures and records the electrical activity of your brain by using sensors (electrodes) attached to your head and connected by wires to a computer. The computer records your brain's electrical activity on the screen or on paper as wavy lines. This test is performed to see how the different parts of the brain function. EEGs also help caregivers learn about sleeping
problems, brain injury, brain tumors, and many other problems. The machine records a graph of your brain waves.No electricity is transferred to your brain. This is performed by a specially trained technician

Patient Instructions:
          Tell your doctor if you are taking any medications. Certain medications (such as sedatives and tranquilizers, muscle relaxants, sleeping medications, or medications used to treat seizures) can affect your brain's usual electrical activity.
          Avoid foods that contain caffeine (such as coffee, tea, cola, and chocolate) for at least 8 hours before the test.

          Your hair should be clean and free of sprays, oils, creams, lotions, and other hair preparations. Shampoo your hair and rinse with clear water the evening before or the morning of the test. Do not apply any hair conditioners or oils after shampooing. Do not braid or tease the hair.

          Your EEG will be done in a room that is dark and quiet. You will either lie in a bed or sit in a reclining chair during the test. 

          A caregiver will measure your head and scrubs (cleans) 20 to 21 areas of your scalp. Then, a cream will be placed on these areas. Electrodes will be placed on the cream. The electrodes will be connected with wires to a computer. An electrode may be put on each earlobe. Lie still with your eyes closed. The EEG machine will record your brain waves on a computer. 

          You may be asked to hyperventilate (hi-per-VEN-ti-late). This means you may need to breathe deeply and quickly for three to four minutes. You may be asked to look into a bright flashing light. Caregivers watch to see how these activities change your brain waves. Make sure you are comfortable before the test begins. Do not talk during the test.

          After the EEG the paste and electrodes will be removed by the technician. Small reddened areas may be noted on the scalp which will disappear in a short period of time.

          Allow an hour and a half for this procedure.

          Sometimes you will be asked to stay awake the night before, since it can enhance abnormalities.



          Continuous Audio Visual EEG recording is a standard of care in establishing an accurate diagnosis in epilepsy. The technicians will attach about 22 electrodes to your scalp using a special adhesive. Each electrode is connected to a wire which eventually connects to a computer system. Your brain emits very weak electrical discharges which the electrodes are able to collect. During various activities, such as a seizure, the electrodes over the active areas receive more electrical stimulation than the other electrodes. Your doctor is able to study this information to help determine the area in the brain responsible for the seizures. These electrodes will remain attached for the entire duration of the study which is typically from 24 hours to 72 hours.General instructions are the same sa above for a routine EEG.
          In addition to EEG monitoring, you will be monitored on an audio-video camera. Your image, along with simultaneous EEG recordings, is saved. When you have a seizure, the doctor will be able to review the EEG and see exactly how you responded. This will help determine the location of the seizures, and their severity.