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Article: Time-frequency analysis of somatosensory evoked potentials for intraoperative spinal cord monitoring

TitleTime-frequency analysis of somatosensory evoked potentials for intraoperative spinal cord monitoring
Authors
Issue Date2011
PublisherLippincott Williams & Wilkins. The Journal's web site is located at http://www.clinicalneurophys.com
Citation
Journal of Clinical Neurophysiology, 2011, v. 28 n. 5, p. 504-511 How to Cite?
AbstractPURPOSE: To evaluate the potential use of time-frequency analysis and its reliability in intraoperative somatosensory evoked potential (SEP) monitoring. METHODS: One hundred ninety-one patients undergoing thoracic and/or lumbar spinal surgery were studied retrospectively. The SEP signals were recorded during different stages of surgery. Averaged SEP was analyzed by short-time Fourier transform. The main peak in the time-frequency interpretation of SEP was measured in peak power, peak time, and peak frequency. The variability of these parameters was compared with that of amplitude and latency during different stages of surgery. The reliability of these parameters was also compared in true-positive and false-positive cases. RESULTS: During different surgical stages for the posterior tibial nerve SEP, the intrasubject variability of peak power was found to be more stable than that of amplitude, while the intrasubject variability of peak time did not show any difference compared with that of latency. The peak frequency presented stable during surgery. Moreover, the true-positive SEP case showed that peak power may detect the potential injury earlier than amplitude does. The false-positive outcomes could be reduced by the proposed method. CONCLUSIONS: The SEP peak component was found stable and reliable during the different stages of surgery. For clinical application purpose, time-frequency analysis was suggested to be an additional monitoring method besides the conventional amplitude/latency measurement since it provided a more reproducible and prompt response to the potential injury in intraoperative SEP monitoring. Copyright © 2011 by the American Clinical Neurophysiology Society.
Persistent Identifierhttp://hdl.handle.net/10722/159740
ISSN
2015 Impact Factor: 1.337
2015 SCImago Journal Rankings: 0.578
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHu, Yen_HK
dc.contributor.authorLiu, Hen_HK
dc.contributor.authorLuk, KDen_HK
dc.date.accessioned2012-08-16T05:55:26Z-
dc.date.available2012-08-16T05:55:26Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal of Clinical Neurophysiology, 2011, v. 28 n. 5, p. 504-511en_HK
dc.identifier.issn0736-0258en_HK
dc.identifier.urihttp://hdl.handle.net/10722/159740-
dc.description.abstractPURPOSE: To evaluate the potential use of time-frequency analysis and its reliability in intraoperative somatosensory evoked potential (SEP) monitoring. METHODS: One hundred ninety-one patients undergoing thoracic and/or lumbar spinal surgery were studied retrospectively. The SEP signals were recorded during different stages of surgery. Averaged SEP was analyzed by short-time Fourier transform. The main peak in the time-frequency interpretation of SEP was measured in peak power, peak time, and peak frequency. The variability of these parameters was compared with that of amplitude and latency during different stages of surgery. The reliability of these parameters was also compared in true-positive and false-positive cases. RESULTS: During different surgical stages for the posterior tibial nerve SEP, the intrasubject variability of peak power was found to be more stable than that of amplitude, while the intrasubject variability of peak time did not show any difference compared with that of latency. The peak frequency presented stable during surgery. Moreover, the true-positive SEP case showed that peak power may detect the potential injury earlier than amplitude does. The false-positive outcomes could be reduced by the proposed method. CONCLUSIONS: The SEP peak component was found stable and reliable during the different stages of surgery. For clinical application purpose, time-frequency analysis was suggested to be an additional monitoring method besides the conventional amplitude/latency measurement since it provided a more reproducible and prompt response to the potential injury in intraoperative SEP monitoring. Copyright © 2011 by the American Clinical Neurophysiology Society.en_HK
dc.languageengen_US
dc.publisherLippincott Williams & Wilkins. The Journal's web site is located at http://www.clinicalneurophys.comen_HK
dc.relation.ispartofJournal of Clinical Neurophysiologyen_HK
dc.rightsThis is a non-final version of an article published in final form in Journal of Clinical Neurophysiology, 2011, v. 28 n. 5, p. 504-511-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subject.meshAdolescenten_HK
dc.subject.meshAdulten_HK
dc.subject.meshAgeden_HK
dc.subject.meshChilden_HK
dc.subject.meshElectric Stimulationen_HK
dc.subject.meshElectroencephalographyen_HK
dc.subject.meshEvoked Potentials, Somatosensoryen_HK
dc.subject.meshFalse Positive Reactionsen_HK
dc.subject.meshFemaleen_HK
dc.subject.meshFourier Analysisen_HK
dc.subject.meshHong Kongen_HK
dc.subject.meshHumansen_HK
dc.subject.meshLumbar Vertebrae - surgeryen_HK
dc.subject.meshMaleen_HK
dc.subject.meshMiddle Ageden_HK
dc.subject.meshMonitoring, Intraoperative - methodsen_HK
dc.subject.meshOrthopedic Procedures - adverse effectsen_HK
dc.subject.meshReaction Timeen_HK
dc.subject.meshReproducibility of Resultsen_HK
dc.subject.meshRetrospective Studiesen_HK
dc.subject.meshSignal Processing, Computer-Assisteden_HK
dc.subject.meshSpinal Cord - physiopathologyen_HK
dc.subject.meshSpinal Cord Injuries - diagnosis - etiology - physiopathologyen_HK
dc.subject.meshThoracic Vertebrae - surgeryen_HK
dc.subject.meshTibial Nerve - physiopathologyen_HK
dc.subject.meshTime Factorsen_HK
dc.subject.meshYoung Adulten_HK
dc.titleTime-frequency analysis of somatosensory evoked potentials for intraoperative spinal cord monitoringen_HK
dc.typeArticleen_HK
dc.identifier.emailHu, Y:yhud@hku.hken_HK
dc.identifier.emailLuk, KD:hcm21000@hku.hken_HK
dc.identifier.authorityHu, Y=rp00432en_HK
dc.identifier.authorityLuk, KD=rp00333en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1097/WNP.0b013e318231c15cen_HK
dc.identifier.pmid21946365-
dc.identifier.scopuseid_2-s2.0-80053617184en_HK
dc.identifier.hkuros202312en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80053617184&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume28en_HK
dc.identifier.issue5en_HK
dc.identifier.spage504en_HK
dc.identifier.epage511en_HK
dc.identifier.isiWOS:000295409100012-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHu, Y=7407116091en_HK
dc.identifier.scopusauthoridLiu, H=35976455700en_HK
dc.identifier.scopusauthoridLuk, KD=7201921573en_HK

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