title: Coherence in depth electrodes during induction of deep anesthesia.
abstract: Our aim was to explore time-varying coherence values versus spacing and referencing of electrode contacts in thalamic level from human encephalographic (EEG) data. Data has been acquired during induction of propofol anesthesia until burst-suppression level in scalp EEG. Results are shown from coherence analysis applied to EEG signals from selected depth electrode contacts pair-wise of three subjects. Alpha coherence is the most prominent behavior in all channel pairs. It is persistent throughout the time period followed and in coherence calculated between bipolar derivations in depth electrodes.
authors.affiliation: Department of Electrical and Information Engineering, BOX 4500, FIN-90014 University of Oulu, Finland. minna.silfverhuth@ee.oulu.fi
authors.forename: Minna J
authors.initials: MJ
authors.lastname: Silfverhuth
authors.forename: Jukka
authors.initials: J
authors.lastname: Kortelainen
authors.forename: Eila
authors.initials: E
authors.lastname: Sonkajärvi
authors.forename: Kalervo
authors.initials: K
authors.lastname: Suominen
authors.forename: Seppo
authors.initials: S
authors.lastname: Alahuhta
authors.forename: Ville
authors.initials: V
authors.lastname: Jäntti
authors.forename: Tapio
authors.initials: T
authors.lastname: Seppänen
mesh_terms: D000368:Aged; D000758:Anesthesia / Q000379:methods*; D004567:Electrodes, Implanted; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015742:Propofol / Q000008:administration & dosage / Q000494:pharmacology; D013997:Time Factors
chemical_list: D015742:Propofol