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Permalink: http://hdl.handle.net/1866/11727

Hemodynamic changes during posterior epilepsies: an eeg-fnirs study

Article [Accepted Manuscript]
Thumbnail
SPIR-OLE_14-02-12_dkn.pdf (2.204Mb)
Is part of
Epilepsy research ; vol. 108, no. 5, pp. 883-890.
Publisher(s)
Elsevier
2014
Author(s)
Pouliot, Philippe
Birca, Véronica
Vannasing, Phetsamone
Tremblay, Julie
Lassonde, Maryse
Nguyen, Dang Khoa
Tran, Thi Phuoc Yen
Affiliation
  • Université de Montréal. Faculté de médecine
  • Université de Montréal. Faculté de médecine. Centre de recherche du CHUM
Keywords
  • EEG-fNIRS
  • Hemodynamic response
  • Epileptic spikes
  • Seizures
  • Occipital lobe epilepsy
  • Crises épileptiques
  • Épilepsies partielles
Abstract(s)
Posterior epilepsies are relatively rare, mainly suspected clinically by the presence of visual auras. Functional near-infrared spectroscopy (fNIRS) is an emerging non-invasive imaging technique that has the potential to monitor hemodynamic changes during epileptic activity. Combined with electroencephalography (EEG), 9 patients with posterior epilepsies were recorded using EEG-fNIRS with large sampling (19 EEG electrodes and over 100 fNIRS channels). Spikes and seizures were carefully marked on EEG traces, and convolved with a standard hemodynamic response function for general linear model (GLM) analysis. GLM results for seizures (in 3 patients) and spikes (7 patients) were broadly sensitive to the epileptic focus in 7/9 patients, and specific in 5/9 patients with fNIRS deoxyhemoglobin responses lateralized to the correct lobe, and to plausible locations within the occipital or parietal lobes. This work provides evidence that EEG-fNIRS is a sensitive technique for monitoring posterior epileptic activity.
Other location(s)
https://doi.org/10.1016/j.eplepsyres.2014.03.007
Collections
  • Faculté de médecine – Travaux et publications [377]

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