 An electroencephalogram is a test that records the electrical activity of the brain and brain wave patterns. For a clear recording during the procedure, your scalp needs to be oil-free and you need to remove your ornaments, accessories, purse, belt, etc. The technologist places electrodes on your head and chest after cleaning the area with gel. The doctor might administer mild sedatives if necessary. You will be asked to do different things like looking at the flashing light or breathe in and out deeply and quickly while being monitored through the console. Post procedure, the technician will remove the electrodes as well as clean the gel with cotton and tissue. This procedure is absolutely painless and you can resume your daily routine activities after it. Your reports will be issued in an hour at the reception after the procedure.