Startseite
English
Erweiterte Suche
Durchblättern nach ...
Publikationen im Überblick
Ansprechpartner
Hilfe
DOI
PMC
 |
|
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Cross-frequency coupling in mesiotemporal EEG recordings of epileptic patients.
J. Physiol. 104, 197-202 (2010)
Semi-invasive foramen ovale (Fov) electrodes were used to record electrical activity in the vicinity of the inferior mesial temporal region of epileptic patients, in addition to standard scalp EEG. Third order cumulant analysis was used to measure the phase-coupled frequencies corresponding to non-linear coupling of spectral frequency components, somewhat analogous to frequencies of resonance. On the basis of the distribution of these frequencies, an index of resonance (IR) is defined as the ratio between the number of peaks in the gamma-band (40-55Hz) vs. the number of peaks in the beta-band (15-30Hz). The epileptogenic focus was located in the hemisphere with lower resonant frequencies because these frequencies were characteristic of a spread of the seizure over a broader area. In the case of Fov electrodes IR could differentiate a group of patients affected by a tumor compared to patients with mesial temporal sclerosis. The novel index IR appears as an interesting parameter to evaluate the level of interareal functional connectivity in Fov recordings in epileptic patients, but its usage is likely to be extended in electrophysiological studies.
Altmetric
Weitere Metriken?
Zusatzinfos bearbeiten
[➜Einloggen]
Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Mesiotemporal lobe epilepsy; Epileptic focus; Cortico-cortical resonances; Bispectrum; Bicoherence
ISSN (print) / ISBN
0928-4257
e-ISSN
1769-7115
Zeitschrift
Journal of Physiology - Paris
Quellenangaben
Band: 104,
Heft: 3-4,
Seiten: 197-202
Verlag
Elsevier
Nichtpatentliteratur
Publikationen
Begutachtungsstatus
Peer reviewed