Further research into the predicting of seizures has been reported to the annual meeting of the American Association for the Advancement of Science.
Researchers monitored the EEG recordings of patients for a continuous period of 10 days. In analysing their data, the scientists found that seizures are preceded by a gradual change in areas of the brain and the EEG recordings noted these changes.
The report also shows that this technique could aid the identification of the focal point of the seizure and be of use to determine which part of the brain to be removed for candidates for surgery.
"In five patients with epilepsy so severe that they were candidates for surgical treatment, epileptic seizures could be reliably predicted from 20 minutes to 43 minutes before the event using this system", said Dr. Leon D. Iasemidis of Arizona State University, a member of the research group.
This research in the wake of French research, reported in the medical journal The Lancet, where EEG signals allowed seizures to be predicted on average 7 minutes before it occurred.