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- W1978952813 abstract "A single channel EEG recording was made in 25 patients undergoing cardiac surgery and analysed using 5 different techniques — amplitude, cerebral function monitor, Fourier, Hjorth, and zero-crossing analyses. The results of the analyses were plotted as trend information on paper. These trends were studied for changes in the EEG during surgery. In the majority of cases changes were noted simultaneously by all 5 techniques. There were, however, some cases in which an amplitude-only technique showed no changes while frequency contributions were changing, and a frequency-only technique showed no changes while amplitudes were changing. The conclusion drawn is that major EEG changes are observed with any of the techniques studied, but that for improved sensitivity a technique analysing both frequency and amplitude information should be used. Un enregistrement EEG mono-canal a été effectué chez 25 patients subissant une intervention cardiaque et a été analysé selon 5 techniques différentes: analyse de — l'amplitude, moniteur des fonctions cérébrales, Fourier, Hjorth et passages au zéro. Les résultats de ces analyses ont été tracés sur papier en tant qu'informations de tendances. Ces tendances furent appliquées aux modifications de l'EEG pendant l'intervention. Dans la majorité des cas ces modifications furent enregistrées simultanément par les 5 techniques. Il y eut cependant certains cas pour lesquels l'analyse de l'amplitude seule ne montrait pas de modifications alors que les distributions de fréquences changeaient; d'autres aussi, pour lesquels l'analyse en fréquence seule ne montrait pas de modifications alors que celle de l'amplitude présentait des changements. On en conclut que les modifications majeures de l'EEG sont observées, quelle que soit la technique analysée ici, mais que pour accroître la sensibilité, il est utile d'utiliser une analyse conjointe de la fréquence et de l'amplitude." @default.
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- W1978952813 date "1985-10-01" @default.
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- W1978952813 title "Comparison of EEG monitoring techniques: An evaluation during cardiac surgery" @default.
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- W1978952813 doi "https://doi.org/10.1016/0013-4694(85)91099-5" @default.
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