

Comorbid psychiatric disorders in patients with epilepsy were not reported in nonlinear EEG analysis except for one case series of comorbid psychotic disorders. We identified 60 studies from the public data of Andrzejak 2001 and two studies that did not use the data of Andrzejak 2001. We examined only about English language studies of nonlinear EEG analysis that compared normal EEG and interictal EEG and reported the accuracy. Thus, nonlinear EEG analysis may be useful for clinical application. EEG exhibits nonlinearity and weak stationarity.

An electroencephalogram (EEG) adds useful information for the diagnosis of epilepsy when epileptic abnormalities emerge. Diagnosis of epilepsy usually involves interviewing the patients and the individuals who witnessed the seizure.
