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KMID : 1137820070280060750
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의공학회지
2007 Volume.28 No. 6 p.750 ~ p.755
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Development for the Evaluation Index of an Anesthesia Depth using the Bispectrum Analysis
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Park Jun-Mo
Ye Soo-Young
Nam Gi-Gon
Jeon Gye-Rok
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Abstract
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The linear SEF (Spectral Edge Frequency) parameter and spectrum analysis method can not reflect the non-linear of EEG. This method can not contribute to acquire real time analysis and obtain a high confidence in the clinic due to low discrimination. To solve the problems, the development of a new index is carried out using the bispectrum analyzing the EEG including the non-linear characteristic. At the bispectrum analysis of the 2 dimension, the most significant’s power spectrum density peaks appeared much at the specific area in awake and anesthesia state. Because many peaks are showed at the specific area in the frequency coordinate, these points are used to create the new index. Range of the index is 0-100. At the anesthesia, the index is 20-50 and at the awake, the index is 90-60. New index can discriminate the awake and anesthesia state.
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KEYWORD
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anesthesia, bispctrum, spectral edge frequency, electroencephalogram
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