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Intracerebrally recorded high frequency oscillations: Simple visual assessment versus automated detection
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SYSNO ASEP 0397630 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Intracerebrally recorded high frequency oscillations: Simple visual assessment versus automated detection Author(s) Pail, M. (CZ)
Halámek, Josef (UPT-D) RID, ORCID, SAI
Daniel, P. (CZ)
Kuba, R. (CZ)
Tyrlíková, I. (CZ)
Chrastina, J. (CZ)
Jurák, Pavel (UPT-D) RID, ORCID, SAI
Rektor, I. (CZ)
Brázdil, M. (CZ)Number of authors 9 Source Title Clinical Neurophysiology. - : Elsevier - ISSN 1388-2457
Roč. 124, č. 10 (2013), s. 1935-1942Number of pages 8 s. Publication form Print - P Language eng - English Country IE - Ireland Keywords High frequency oscillations ; Spikes ; Ripples ; Temporal lobe epilepsy ; Extratemporal lobe epilepsy ; Seizure onset zone ; Epileptogenic zone Subject RIV FH - Neurology R&D Projects GAP103/11/0933 GA ČR - Czech Science Foundation (CSF) ED0017/01/01 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UPT-D - RVO:68081731 UT WOS 000324531400006 EID SCOPUS 84883055571 DOI 10.1016/j.clinph.2013.03.032 Annotation Objective: We compared the possible contribution (in the detection of seizure onset zone -SOZ) of simple visual assessment of intracerebrally recorded high-frequency oscillations (HFO) with standard automated detection. Methods: We analyzed stereo-EEG (SEEG) recordings from 20 patients with medically intractable partial seizures (10 temporal/10 extratemporal). Independently using simple visual assessment and automated detection of HFO, we identified the depth electrode contacts with maximum occurrences of ripples (R) and fast ripples (FR). The SOZ was determined by independent visual identification in standard SEEG recordings, and the congruence of results from visual versus automated HFO detection was compared. Results: Automated detection of HFO correctly identified the SOZ in 14 (R)/10 (FR) out of 20 subjects; a simple visual assessment of SEEG recordings in the appropriate frequency ranges correctly identified the SOZ in 13 (R)/9 (FR) subjects. Conclusions: Simple visual assessment of SEEG traces and standard automated detection of HFO seem to contribute comparably to the identification of the SOZ in patients with focal epilepsies. When using macroelectrodes in neocortical extratemporal epilepsies, the SOZ might be better determined by the ripple range. Significance: Standard automated detection of HFO enables the evaluation of HFO characteristics in whole data. This detection allows general purpose and objective evaluation, without any bias from the neurophysiologist's experiences and practice. (C) 2013 Published by Elsevier Ireland Ltd. on behalf of International Federation of Clinical Neurophysiology. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2014
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