What is the ElettroEncefaloGramma?
The EEG records the electrical activity of the cerebral cortex through surface electrodes positioned on the head. Since each of these electrodes reflects in the first line the activity of the nearest cerebral part, this examination provides information not only on anomalous electrical activities but also on their location.
How is the EEG performed?
The electrodes, once covered with electroconductive paste, are assembled according to a fixed scheme (system 10-20) on all parts of the scalp and held in place by a rubber cap. The average duration of the exam is about 30 minutes for a vigil recording. During this time the spontaneous activity is evaluated and the onset of possible EEGrafic signals, both spontaneous and favored by activation tests such as: opening / closing of the eyes, hyperventilation (deep breathing for at least 3 minutes), intermittent bright stimulations (mink bright flashes).
Who performs the test?
The Neurophysiopathology Technician is the one who performs the EEG, along with other neurological examinations. He is trained during a specific three-year degree course at the Faculty of Medicine and Surgery.
What happens after the exam?
At the end of the examination, the hair remains decomposed with traces of gel used on the electrodes but easily removable with a brush or with a little warm water.
There may be temporary redness on the skin at the application of the electrodes or for the cuff tension.
The patient can go home alone and drive without any problem.