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British Journal of Anaesthesia 2004 93(4):596-597; doi:10.1093/bja/aeh612
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© The Board of Management and Trustees of the British Journal of Anaesthesia 2004

CORRESPONDENCE

Does bispectral analysis add anything but complexity? BIS sub-components may be superior to BIS for detection of awareness

The first 10% of the full text of this article appears below.

Editor—We read with interest the analysis of Miller and colleagues1 who found that SyncFastSlow, the bispectral parameter of the bispectral index score (BIS), is not superior to the analogous power spectral parameter. In their study, they calculated PowerFastSlow, the logarithmic ratio of the power of high frequency components (40–47 Hz) and total frequency content (1–47 Hz). In their analysis, prediction of an awake or anaesthetized state was mainly attributable to the change in high frequency content of the EEG. We wish to congratulate the . . . [Full Text of this Article]

G. Schneider, S. Schöniger and E. Kochs

Munich, Germany

J. Sleigh

Hamilton, New Zealand


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