Electroencephalogram (eeg) factory small make up today to explain some several classification of electroencephalogram (eeg).
The first: the routine eeg examination.

The second: sleep eeg examination.
In the case of routine eeg examination can not be sure, sleep eeg can help further thorough check.While you are awake, only a small number of patients can check out in a single check epileptiform discharge,While most of the patients, in a sleep eeg can capture the epileptiform activity.Nearly half of the patients with epilepsy routine eeg is normal, but in sleep eeg examination record to the epileptiform discharge. 
The third: sleep deprivation eeg examination.
This is targeted at awake electroencephalogram (eeg) is normal, it is difficult to record to the sleep eeg of the patients, can be induced by sleep deprivation, help to improve the epileptiform discharge detection rate of the part of the patient.
Fourth: invasive eeg examination.
Such a thing to need surgical operation patients as a preoperative assessment, specific operation: the deep electrodes placed directly to the surface of the brain to the patient, help determine the location and number of the source epilepsy.
Fifth: video synchronization of eeg monitoring.
This is with the camera eeg recorder, mainly attacks and attacks in patients break record electroencephalogram (eeg), for a long time taken to the clinical symptoms of patients at the same time, to help determine the nature of the patients with paroxysmal attack.Which is very important in epilepsy surgery before evaluation of an inspection program.