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科技與工程學院
機電工程學系
學位論文
學位論文
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http://rportal.lib.ntnu.edu.tw/handle/20.500.12235/73894
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search.filters.author.Shi-Ping Shen
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search.filters.author.沈世評
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search.filters.subject.BCI
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search.filters.subject.EEG
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search.filters.subject.LDA
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search.filters.subject.大腦人機介面
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search.filters.subject.線性鑑別分析法
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用線性鑑別分析法做冥想四個方向的分類
(
2005
)
沈世評
;
Shi-Ping Shen
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大腦人機介面(Brain-computer interface)是一種利用腦部訊號跟外界溝通的新技術,其目的是能夠幫助因神經肌肉損傷而行動受阻礙的人。對於內部刺激—想像左右手和腳動—已經有研究過了,但冥想四個方向是值得去研究。有鑑於此,本研究建立一套系統,它以冥想四個方向實驗的腦波訊號作為輸入訊號並利用快速傅立葉分析法找出腦波的特徵,然後利用線性鑑別分析法來分辨這些特徵。最後找出一組可以分辨冥想四個方向的腦波。 經由實驗結果得知,此系統可以利用實驗中分辨率最高的資料做為參考腦波,最佳的分辨率可達80%以上。未來可預計將此運用於人機介面上以造福神經疾病患者或行動不便人士。
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