<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The aim of this study was to estimate spectral properties and propagation of the EEG signals registered during sevoflurane anaesthesia between individual EEG recording channels. The intensities of activity flows were calculated for delta, theta, alpha and beta waves using the Directed Transfer Function integration procedure. It was found that delta waves played the dominant role in the EEG signal propagation during anesthesia and it was suggested that theta and alpha waves propagation could be related to the processes participating in the wakefulness control. Data obtained with DTF method were compared with data received from the analysis of cerebral blood flow with the use of PET in other laboratory. This study showed that analysis of the EEG signal propagation is useful for better understanding and thus safer induction of anaesthesia procedure.</p></abstract>

The aim of this study was to estimate spectral properties and propagation of the EEG signals registered during sevoflurane anaesthesia between individual EEG recording channels. The intensities of activity flows were calculated for delta, theta, alpha and beta waves using the Directed Transfer Function integration procedure. It was found that delta waves played the dominant role in the EEG signal propagation during anesthesia and it was suggested that theta and alpha waves propagation could be related to the processes participating in the wakefulness control. Data obtained with DTF method were compared with data received from the analysis of cerebral blood flow with the use of PET in other laboratory. This study showed that analysis of the EEG signal propagation is useful for better understanding and thus safer induction of anaesthesia procedure.

Estimation of the propagation direction and spectral properties of the EEG signals registered during sevoflurane anaesthesia using Directed Transfer Function method

Institute of Biocybernetics and Biomedical Engineering PAS, Trojdena 4 st., 02-109 Warszawa, Poland

Department of Biomedical Physics, Institute of Experimental Physics, Warsaw University, Hoza 69 st., 00-681 Warszawa, Poland

Department of Anaesthesiology, Intensive Therapy and Emergency Medicine, Medical University of Silesia, Medykow 1, 41-200 Sosnowiec, Poland

Department of Neurology and Epileptology CMKP, Czerniakowska 231 st., 00-416 Warszawa, Poland

Polish Journal of Medical Physics and Engineering

The aim of this study was to estimate spectral properties and propagation of the EEG signals registered during sevoflurane anaesthesia between individual EEG...

Estimation of the propagation direction and spectral properties of the EEG signals registered during sevoflurane anaesthesia using Directed Transfer Function method

Online veröffentlicht: 15. Feb. 2012

Seitenbereich: 95 - 104

DOI: https://doi.org/10.2478/v10013-011-0010-7

Schlüsselwörter
EEG signal, volatile anaesthesia, fluorinated inhalation anaesthetics, sevoflurane, Directed Transfer Function method

This content is open access.

Estimation of the propagation direction and spectral properties of the EEG signals registered during sevoflurane anaesthesia using Directed Transfer Function method

Online veröffentlicht: 15. Feb. 2012

Seitenbereich: 95 - 104

DOI: https://doi.org/10.2478/v10013-011-0010-7

SchlüsselwörterEEG signal, volatile anaesthesia, fluorinated inhalation anaesthetics, sevoflurane, Directed Transfer Function method

This content is open access.

Schlüsselwörter
EEG signal, volatile anaesthesia, fluorinated inhalation anaesthetics, sevoflurane, Directed Transfer Function method