Stimulus-induced rhythmic, periodic, or ictal
discharges in comaincidence and interrater reliability of continuous EEG after a standard stimulation protocol: a prospective study.
Also we selected the EEG sample periods which had no ictal
changes or sleep disorder findings.
(ii) The detection of the preictal phase from studying the healthy and ictal
phase of each patient
In this study, we used three classes of EEG data consisting of EEG signals from epileptic subjects in the condition of seizures (ictal
), EEG signals in interictal conditions, and normal EEG signals from a healthy person with a closed eye condition.
Tang et al., "Using ictal
high-frequency oscillations (80-500 Hz) to localize seizure onset zones in childhood absence epilepsy: a MEG study," Neuroscience Letters, vol.
These sequences are derived from individual adjacency matrix corresponding to preictal, ictal
and postictal EEG sessions separately.
All the convulsions stopped abruptly after the psychologist firmly commanded that the ictal
The period right after the seizure ends is called the "post ictal
tachycardia and ictal
bradycardia occur most frequently in association with mesial temporal lobe sclerosis and both are associated with other brain abnormalities such as cortical dysplasia, heterotopia and cortical lesions [50-53].
Several studies revealed that most of the heterotopic nodules experience the epileptic activity of their own accord at seizure onset, which is synchronous with the overlying neocortex or ipsilateral hippocampus.[sup] The heterotopia usually give rise to synchronous ictal
or interictal epileptic discharges.
Therefore, postictal and ictal
psychosis occur immediately after or even during the seizure, whereas interictal psychosis occurs between seizures.
The inclusion criterion were as follows: (i) ictal
or interictal EEG evidence and consistent seizure semiology of clear onset in the frontal lobe (ii) MRI evidence of epileptogenic lesions of the frontal lobe (iii) normal intellectual function as measured by Standard Progressive Matrices.