Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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The Estimation of the Depth of Anesthetic Using Higher-Order Spectrum Analysis of EEG Signals

  • Park, Jong-Duk (Dept. of Biomedical Engr., College of Medicine, Pusan National University) ;
  • Ye, Soo-Young (BK21 Medical Science Education Center, College of Medicine, Pusan National University) ;
  • Jeon, Gye-Rok (Dept. of Biomedical Engr., School of Medicine, Pusan National University) ;
  • Huh, Young (Korea Electrotechnology Research Institute)
  • Published : 2007.04.30
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Abstract

The researchers have studied for a long time about the depth of anesthesia but they don't make criteria for the depth of anesthesia. Anesthetists can't make a prediction about patient's reaction. Therefore, patients have potential risk such as poisonous side effect, late-awake, early-awake and strain reaction. In this study, the distributed characteristics on the bispectrum and bicoherence, the type of nonlinear signal processing, as a result of the coupling of EEG were presented according to depth of anesthesia. These results were consistent with a trend of delta ratio that the index of evaluation for the depth of anesthesia. The higher-order spectrum (HOS), the bispectrum and bicoherence, gives the useful information about depth of anaesthesia than other indexes.

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References

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