| Summary: | 碩士 === 建國科技大學 === 機電光系統研究所 === 94 === The purpose of this research is to study the effect for acupuncture by analysis of EEG using technology of continuous wavelet transform (CWT). According to definition of EEG, the signal was decomposed into a combination of delta(0.5-4Hz), theta(5-8Hz), alpha(8-13Hz), and beta(13-30Hz). There are 24 male normal subjects were enrolled in this study, and their age is between 20 and 24 years old. Electrode points measured are at the position of T3 and T4 in temporal areas. All the measuring time is 30 minutes. Subjects are eyes-closed in 5 minutes before acupuncture. Then, the EEG signal is continuously recorded for 20 minutes. During this time, subjects keep eyes-closed and conscious. The EEG keeps on recording for 5 minutes after acupuncture. A continuous wavelet transform maps a time function into a two-dimensional function of time and frequency. For characteristic and quantitative analysis, we proposed a analytic time-frequency method to obtain energy from each wave band of EEG, and a Wilcoxon signed rank test is employed to see if acupuncture is significant. The results show that: 1. After deep acupuncture, left beta wave decline (12~16%) statistically between 9th and 20th minutes, and so does right beta wave between 10th and 20th minutes (10~14%). 2. After minimal acupuncture, left alpha wave decline (6-13%) statistically between 7th and 14th minutes, and so does right alpha wave (12-18%). Left beta wave decline (17~20%) statistically between 10th and 20th minutes, and so does right beta wave between 9th and 18th minutes (13~21%). 3. There is no significant variation between 21th~25th minutes the time no acupuncture.
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