Electroencephalography (EEG) is the gold standard electrophysiological test that is routinely used for presurgical evaluation and differential diagnosis and prognosis of epilepsy [1]. However, it is a dynamic test and specific EEG abnormalities, such as interictal spike waves, sharp waves, which can be combined as interictal epileptiform discharges (IEDs), may not be obtained initially because only 29%–56% of patients with epilepsy have IED during the initial recording [1,2]. Therefore, an EEG needs to be repeated to obtain diagnostic data because the detection of IED can increase to 92% by the fourth EEG recording [2].

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