Title :
Coherence in depth electrodes during induction of deep anesthesia
Author :
Silfverhuth, Minna J. ; Kortelainen, Jukka ; Sonkajärvi, Eila ; Suominen, Kalervo ; Alahuhta, Seppo ; Jäntti, Ville ; Seppänen, Tapio
Author_Institution :
Dept. of Electr. & Inf. Eng., Univ. of Oulu, Oulu, Finland
fDate :
Aug. 31 2010-Sept. 4 2010
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.
Keywords :
biomedical electrodes; coherence; drugs; electroencephalography; medical signal processing; alpha coherence; bipolar derivations; burst-suppression level; deep anesthesia; depth electrodes; electrode contact referencing; electrode contact spacing; human encephalographic data; induction; propofol anesthesia; scalp EEG; thalamic level; time-varying coherence values; Anesthesia; Coherence; Electrodes; Electroencephalography; Monitoring; Scalp; Time frequency analysis; Aged; Anesthesia; Electrodes, Implanted; Electroencephalography; Female; Humans; Male; Middle Aged; Propofol; Time Factors;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE
Conference_Location :
Buenos Aires
Print_ISBN :
978-1-4244-4123-5
DOI :
10.1109/IEMBS.2010.5627573