Westmoreland B F
Neurol Clin. 1985 Aug;3(3):599-613.
The EEG is useful in evaluating seizure disorders by establishing or confirming the diagnosis of a seizure disorder, determining the type and focus of origin of the seizure, and helping make the distinction between an epileptic attack and a nonepileptic condition. The EEG also may show other abnormalities, such as focal slowing, that give a clue about the underlying disease process. A negative EEG does not exclude the diagnosis of epilepsy. Activating procedures such as hyperventilation, photic stimulation, and recording during sleep may help bring out epileptiform activity. Occasionally, repeated or more prolonged recordings are necessary to demonstrate the epileptiform abnormalities. On the other hand, epileptiform-like activity may be present in the EEG without being associated with a seizure disorder. As the diagnosis of epilepsy is a clinical one, the EEG, like any test, should not be used independently in making the diagnosis of epilepsy but should be interpreted in the context of the whole clinical setting.
脑电图在评估癫痫疾病方面很有用，可用于确立或确认癫痫疾病的诊断、确定癫痫发作的类型和起源部位，并有助于区分癫痫发作和非癫痫性疾病。脑电图还可能显示其他异常，如局灶性慢波，这可为潜在的疾病过程提供线索。脑电图结果为阴性并不能排除癫痫的诊断。诸如过度换气、闪光刺激和睡眠期间记录等激活程序可能有助于引出癫痫样活动。偶尔，需要重复或延长记录时间才能显示出癫痫样异常。另一方面，脑电图中可能出现类似癫痫样的活动，但与癫痫疾病无关。由于癫痫的诊断是临床诊断，脑电图与任何检查一样，不应单独用于癫痫的诊断，而应结合整个临床情况进行解读。
