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Title: 一種基於外傷性腦和脊隨損傷P300腦機介面F3和F4腦波IMFs時頻特徵分析
IMFs-based Time Frequency Features for
Authors: Cheng, Shiue-Li
鄭學力
Contributors: NTOU:Department of Electrical Engineering
國立臺灣海洋大學:電機工程學系
Keywords: 希爾伯特-黃轉換;外傷性腦和脊髓損傷;P300;腦機介面;本質模態函數;邊際頻率
Hilbert Huang Transform;Traumatic Brain and Spinal-cord Injury;P300;Brain-computer Interface;Intrinsic Mode Function;Marginal Frequency
Date: 2015
Issue Date: 2018-08-22T07:09:56Z
Abstract: 本論文中應用希爾伯特-黃轉換時頻分析方法進行外傷性腦和脊髓損傷者與正常者P300 腦機介面F3、F4 腦波訊號分析。本質模態函數和邊際頻率特徵是研習的主題。正常者F3 IMF6、IMF7、IMF8、RF 分別占了參考總能量之13.93%、23.79%、22.44%、20.95%,參考總能量為 3.71 x1011 V 2;外傷性腦和脊髓損傷者F3 IMF6、IMF7、IMF8、RF 分別占了參考總能量之27.16%、26.57%、3.56%、25.52%,參考總能量為2.60x1012 V 2;正常者F4 IMF6、IMF7、IMF10、RF分別占了參考總能量之11.87%、12.21%、15.05%、38.62%,參考總能量為2.48x1011 V 2,外傷性腦和脊髓損傷者 F4 之 IMF6、IMF7、IMF8、RF分別占了參考總能量之 9.67%、22.52%、20.20%、25.52%,參考總能量為 2.07x1012 V 2。外傷性腦和脊髓損傷者和正常者F3 之MF6、MF7 能量主要分布在δ頻段上,外傷性腦和脊髓損傷者在δ頻段的能量大於正常者。外傷性腦和脊髓損傷者和正常者F3 之MF8 能量能量主要分布在小於0.5 赫茲和δ頻段上,外傷性腦和脊髓損傷者在小於0.5 赫茲的能量大於正常者,在δ頻段則是正常者能量大於外傷性腦和脊髓損傷者。外傷性腦和脊髓損傷者和正常者F3 之RF 能量主要分布在小於0.5 赫茲,外傷性腦和脊髓損傷者在小於0.5 赫茲的能量大於正常者。外傷性腦和脊髓損傷者和正常者F4 之MF6 能能量主要分布在δ頻段上,外傷性腦和脊髓損傷者在δ頻段的能量大於正常者。正常者F4 之MF7 能量表,能量主要分布在δ頻段上,外傷性腦和脊髓損傷者F4 之MF7 能量主要分布在小於0.5 赫茲和δ頻段上,可觀察外傷性腦和脊髓損傷者在小於0.5 赫茲和δ頻段的能量大於正常者。外傷性腦和脊髓損傷者和正常者F4 之MF8 能量主要分布在小於0.5 赫茲和δ頻段上,可以觀察出外傷性腦和脊髓損傷者在小於0.5 赫茲的能量大於正常者,在δ頻段的能量大於正常者。外傷性腦和脊髓損傷者正常者F4 之殘餘函數MF能量主要分布在小於0.5 赫茲,可以觀察出外傷性腦和脊髓損傷者在小於0.5赫茲的能量大於正常者。
In the thesis, the Hilbert Huang Transform time-frequency analysis method was used to analyze the P300-based brain–computer interface (BCI) with F3 and F4 electroencephalography (EEG) signals in subjects with Traumatic Brain and Spinal-cord Injury(TBSCI). The intrinsic mode functions (IMFs) and marginal frequency (MF) were studied. Our analysis results showed that the ratios of the energy of the P300-based BCI with the F3 EEG signals of a normal observer to its refereed total energy for IMF6, IMF7, IMF8, and the residual function (RF) were 13.93%, 23.79%, 22.44%, and 20.95%, respectively, and that the refereed total energy was 3.71 x1011 . The ratios of the energy of P300-based BCI with the F3 EEG signals of a TBSCI observer to its refereed total energy for IMF6, IMF7, IMF8, and the RF were 27.16%, 26.57%, 3.56%, and 25.52%, respectively, and that the refereed total energy was 2.60x1012 . The ratios of the energy of P300-based BCI with the F4 EEG signal of a normal observer to its refereed total energy for IMF6, IMF7, IMF8, and the RF were 11.87%, 12.21%, 15.05%, and 38.62%, respectively, and that the refereed total energy was 2.48x1011 .The ratios of the energy of P300-based BCI with the F4 EEG signal of a TBSCI observer to its refereed total energy for IMF6, IMF7, IMF8, and the RF were 9.67%, 22.52%, 20.20%, and 25.52%, respectively, and that the refereed total energy was 2.07x1012 . The energies of IMF6, and IMF7 in the δ band in the F3 signals of the normal observer were smaller than those of IMF6, and IMF7 in the δ band in the F3 signals of the observer with a TBSCI. The energies of IMF8, and RF in the 0-0.5 Hz band in the F3 signal of the normal observer were smaller than those of IMF8, and RF in the 0-0.5 Hz band in the F3 signal of the observer with a TBSCI. The energies of IMF8, and RF in the δ band in the F3 signal of the normal observer were larger than those of IMF8, and RF in the δ band in the F3 signal of the observer with a TBSCI. The energies of IMF6 in the δ band in the F4 signal of the normal observer were smaller than that of IMF6 in the δ band in the F4 signal of the observer with a TBSCI. The energies of IMF7, IMF8, and RF in the 0-0.5 Hz band in the F4 signal of the normal observer were smaller than that of IMF7 and IMF8 in the 0-0.5 Hz band in the F4 signal of the observer with a TBSCI.
URI: http://ethesys.lib.ntou.edu.tw/cgi-bin/gs32/gsweb.cgi?o=dstdcdr&s=G0010253067.id
http://ntour.ntou.edu.tw:8080/ir/handle/987654321/49681
Appears in Collections:[電機工程學系] 博碩士論文

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