title: Anticipating the unobserved: prediction of subclinical seizures.
abstract: Subclinical seizures (SCS) have rarely been considered in the diagnosis and therapy of epilepsy and have not been systematically analyzed in studies on seizure prediction. Here, we investigate whether predictions of subclinical seizures are feasible and how their occurrence may affect the performance of prediction algorithms. Using the European database of long-term recordings of surface and invasive electroencephalography data, we analyzed the data from 21 patients with SCS, including in total 413 clinically manifest seizures (CS) and 3341 SCS. Based on the mean phase coherence we investigated the predictive performance of CS and SCS. The two types of seizures had similar prediction sensitivities. Significant performance was found considerably more often for SCS than for CS, especially for patients with invasive recordings. When analyzing false alarms triggered by predicting CS, a significant number of these false predictions were followed by SCS for 9 of 21 patients. Although currently observed prediction performance may not be deemed sufficient for clinical applications for the majority of the patients, it can be concluded that the prediction of SCS is feasible on a similar level as for CS and allows a prediction of more of the seizures impairing patients, possibly also reducing the number of false alarms that were in fact correct predictions of CS. This article is part of a Supplemental Special Issue entitled The Future of Automated Seizure Detection and Prediction.
authors.affiliation: Bernstein Center Freiburg, University of Freiburg, Freiburg, Germany. feldwisch@bcf.uni-freiburg.de
authors.forename: Hinnerk
authors.initials: H
authors.lastname: Feldwisch-Drentrup
authors.forename: Matthias
authors.initials: M
authors.lastname: Ihle
authors.forename: Michel Le Van
authors.initials: Mle V
authors.lastname: Quyen
authors.forename: Cesar
authors.initials: C
authors.lastname: Teixeira
authors.forename: Antonio
authors.initials: A
authors.lastname: Dourado
authors.forename: Jens
authors.initials: J
authors.lastname: Timmer
authors.forename: Francisco
authors.initials: F
authors.lastname: Sales
authors.forename: Vincent
authors.initials: V
authors.lastname: Navarro
authors.forename: Andreas
authors.initials: A
authors.lastname: Schulze-Bonhage
authors.forename: Björn
authors.initials: B
authors.lastname: Schelter
mesh_terms: D000293:Adolescent; D000328:Adult; D000465:Algorithms; D002648:Child; D002675:Child, Preschool; D004569:Electroencephalography; D004828:Epilepsies, Partial / Q000175:diagnosis* / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D055815:Young Adult