Electroencephalography in Anesthesiology |
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50 microvolts Adapted and reproduced alpha rhythm amplifier amplitude analgesia anesthesia in humans ANESTHESIOLOGY anesthetic agent anoxia arterial blood automatic control barbiturate Beecher and McDonough Bellville brain potentials brain waves burst suppression carbon dioxide chlorpromazine clinical co-workers concentration of ether cortex cortical activity Courtin curare cyclopropane decrease DEEP ANESTHESIA deeper levels demerol depth of anesthesia discharges dogs doses drugs E.E.G. LEVEL effect elec electric activity electric output electrode electroencephalo electroencephalographic changes electroencephalographic levels electroencephalographic patterns ether ether anesthesia fast activity Faulconer fluoromar fluothane frequency hypotension hypothermia hypoxia increase in amplitude interference intravenous Kiersey kind permission Level-I levels of anesthesia light anesthesia microvolts midbrain narcosis neurons nitrous oxide noted operating room oxygen patient pentothal pentothal anesthesia perfusion premedication publisher from Bickford rate of administration recording rhythms during anesthesia scalp seconds 10 Fig servoanesthesia servosystem slow waves studied superimposed synchronized thesia tion trichloroethylene troencephalographic UNITS/MIN viadryl