DocumentCode :
380939
Title :
Accurate identification of evoked potentials by waveform decomposition using discrete cosine transform modeling
Author :
Bai, O. ; Nakamura, M. ; Shibasak, H.
Author_Institution :
Dept. of Adv. Syst. Control Eng., Saga Univ., Japan
Volume :
2
fYear :
2001
fDate :
2001
Firstpage :
2076
Abstract :
This paper introduces a method for decomposing the component responses of the evoked potentials. The decomposition was realized by zero-pole modeling of the evoked potentials in the discrete cosine transform (DCT) domain. It was found that the DCT coefficients of a component response in the evoked potentials could be modeled sufficiently by a second order transfer function in the DCT domain. The decomposition of the component responses was approached by using partial expansion of the estimated model for the evoked potentials, and the effectiveness of the decomposition method was evaluated both qualitatively and quantitatively. Because of the overlap between the component responses, the proposed method enables an accurate identification of the component responses in the evoked potentials, which is useful for clinical and neurophysiological investigations.
Keywords :
bioelectric potentials; discrete cosine transforms; electroencephalography; medical signal processing; physiological models; poles and zeros; waveform analysis; EEGs; accurate evoked potentials identification; clinical investigations; component responses; discrete cosine transform modeling; estimated model; evoked potentials; exogenous excitation; healthy subjects; neuronal diseases assessment; neurophysiological investigations; pain stimulus; partial expansion; peripheral nerves; precise stimulus; second order transfer function; shallow cup electrodes; Control engineering; Delay; Discrete cosine transforms; Diseases; Electrodes; Electroencephalography; Pain; Parameter estimation; Scalp; Transfer functions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
ISSN :
1094-687X
Print_ISBN :
0-7803-7211-5
Type :
conf
DOI :
10.1109/IEMBS.2001.1020643
Filename :
1020643
Link To Document :
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