Correcting for physiological ripples improves epileptic focus identification and outcome prediction

WJEM Zweiphenning, N von Ellenrieder, F Dubeau… - …, 2022 - Wiley Online Library
Objective The integration of high‐frequency oscillations (HFOs; ripples [80–250 Hz], fast
ripples [250–500 Hz]) in epilepsy evaluation is hampered by physiological HFOs, which …

Very high‐frequency oscillations: novel biomarkers of the epileptogenic zone

M Brázdil, M Pail, J Halámek, F Plešinger… - Annals of …, 2017 - Wiley Online Library
Objective In the present study, we aimed to investigate depth electroencephalographic
(EEG) recordings in a large cohort of patients with drug‐resistant epilepsy and to focus on …

Identifying the epileptogenic zone with the relative strength of high-frequency oscillation: a stereoelectroencephalography study

L Qi, X Fan, X Tao, Q Chai, K Zhang, F Meng… - Frontiers in Human …, 2020 - frontiersin.org
Background High-frequency oscillation (HFO) represents a promising biomarker of
epileptogenicity. However, the significant interindividual differences among patients limit its …

Automatic detection of high frequency oscillations during epilepsy surgery predicts seizure outcome

T Fedele, M van't Klooster, S Burnos… - Clinical …, 2016 - Elsevier
Abstract Objective High frequency oscillations (HFOs) and in particular fast ripples (FRs) in
the post-resection electrocorticogram (ECoG) have recently been shown to be highly …

High-frequency oscillations in epilepsy and surgical outcome. A meta-analysis

Y Höller, R Kutil, L Klaffenböck… - Frontiers in human …, 2015 - frontiersin.org
High frequency oscillations (HFOs) are estimated as a potential marker for epileptogenicity.
Current research strives for valid evidence that these HFOs could aid the delineation of the …

Focal resection of fast ripples on extraoperative intracranial EEG improves seizure outcome in pediatric epilepsy

T Akiyama, B McCoy, CY Go, A Ochi, IM Elliott… - …, 2011 - Wiley Online Library
Summary Purpose: High‐frequency oscillations (HFOs), termed ripples at 80–200 Hz and
fast ripples (FRs) at> 200/250 Hz, recorded by intracranial electroencephalography (EEG) …

Resection of high frequency oscillations predicts seizure outcome in the individual patient

T Fedele, S Burnos, E Boran, N Krayenbühl… - Scientific Reports, 2017 - nature.com
High frequency oscillations (HFOs) are recognized as biomarkers for epileptogenic brain
tissue. A remaining challenge for epilepsy surgery is the prospective classification of tissue …

Differentiation of specific ripple patterns helps to identify epileptogenic areas for surgical procedures

K Kerber, M Dümpelmann, B Schelter, P Le Van… - Clinical …, 2014 - Elsevier
Abstract Objective High frequency oscillations (HFOs) at 80–500 Hz are promising markers
of epileptic areas. Several retrospective studies reported that surgical removal of areas …

Resection of individually identified high‐rate high‐frequency oscillations region is associated with favorable outcome in neocortical epilepsy

JR Cho, DL Koo, EY Joo, DW Seo, SC Hong… - …, 2014 - Wiley Online Library
Objectives High‐frequency oscillations (HFO s) represent a novel electrophysiologic marker
of endogenous epileptogenicity. Clinically, this propensity can be utilized to more accurately …

Pathological and physiological high-frequency oscillations on electroencephalography in patients with epilepsy

H Ye, C Chen, SA Weiss, S Wang - Neuroscience Bulletin, 2024 - Springer
High-frequency oscillations (HFOs) encompass ripples (80 Hz–200 Hz) and fast ripples (200
Hz–600 Hz), serving as a promising biomarker for localizing the epileptogenic zone in …