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Description
  • Surgical treatment of epilepsy is based on exact localization of “epileptogenic area”. During presurgical examination tracing of interictal discharges (spikes) propagation is used as additional information about location of this area. The tracking may be done by estimation of delay between spikes in EEG channels. Medical EEG recordings are not recorded with high sampling frequency. That may cause problem, because sometimes the speed of spike propagation is so high, that the delay lies under sampling resolution. The main goal of this preliminary study is to use coherence method on intracranial EEG data and examine if it is able to estimate delay between (IED) even under sampling resolution with reasonable error. For examination simulated EEG signals, with known delays are used. The simulation is done by using IED pattern made from “golden standard” epileptic discharges. Preliminary result made on simulated data shows that this coherence based method is able to examine delays even under sampling resolution for signals with amplitude signal-to-noise ratio (SNR) higher than 10 dB. Such high values of SNR are reached in real EEG recording only by the biggest spikes. Therefore this method is not better for purposes of spike propagation tracking than for example cross-correlation based methods.
  • Surgical treatment of epilepsy is based on exact localization of “epileptogenic area”. During presurgical examination tracing of interictal discharges (spikes) propagation is used as additional information about location of this area. The tracking may be done by estimation of delay between spikes in EEG channels. Medical EEG recordings are not recorded with high sampling frequency. That may cause problem, because sometimes the speed of spike propagation is so high, that the delay lies under sampling resolution. The main goal of this preliminary study is to use coherence method on intracranial EEG data and examine if it is able to estimate delay between (IED) even under sampling resolution with reasonable error. For examination simulated EEG signals, with known delays are used. The simulation is done by using IED pattern made from “golden standard” epileptic discharges. Preliminary result made on simulated data shows that this coherence based method is able to examine delays even under sampling resolution for signals with amplitude signal-to-noise ratio (SNR) higher than 10 dB. Such high values of SNR are reached in real EEG recording only by the biggest spikes. Therefore this method is not better for purposes of spike propagation tracking than for example cross-correlation based methods. (en)
Title
  • Mutual Phase Spectrum Based Method for Epileptic Spike Tracking
  • Mutual Phase Spectrum Based Method for Epileptic Spike Tracking (en)
skos:prefLabel
  • Mutual Phase Spectrum Based Method for Epileptic Spike Tracking
  • Mutual Phase Spectrum Based Method for Epileptic Spike Tracking (en)
skos:notation
  • RIV/68407700:21230/13:00207178!RIV14-MSM-21230___
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
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  • P(NT11460), P(NT13357), S
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 90250
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  • RIV/68407700:21230/13:00207178
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  • Epilepsy; Intracranial EEG; Interictal Epileptiform Discharges; Coherence; Delay Estimation (en)
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http://linked.open...ontrolniKodProRIV
  • [75678930CCA7]
http://linked.open...v/mistoKonaniAkce
  • Prague
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  • Prague
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  • POSTER 2013 - 17th International Student Conference on Electrical Engineering
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  • Janča, Radek
  • Schneider, Jakub
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number of pages
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  • České vysoké učení technické v Praze
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  • 978-80-01-05242-6
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  • 21230
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