A Machine Learning Approach to Classify Vigilance States in Rats

doi:10.1016/j.eswa.2011.02.076

淡江大學機構典藏 > 工學院 > 電機工程學系暨研究所 > 期刊論文 > Item 987654321/55829

請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/55829

題名:	A Machine Learning Approach to Classify Vigilance States in Rats
作者:	Yu, Zong-En;Kuo, Chung-Chih;Chou, Chien-Hsing;Yen, Chen-Tung;Chang, Fu
貢獻者:	淡江大學電機工程學系
關鍵詞:	Vigilance stages;Pattern classification;EEG;Machine learning;PCA;k-NN
日期:	2011-08
上傳時間:	2011-08-28 17:04:47 (UTC+8)
出版者:	Kidlington: Pergamon
摘要:	Identifying mammalian vigilance states has recently become an important topic in biological science research. The vigilance states are usually categorized in at least three states, including slow wave sleep (SWS), rapid eye movement sleep (REM), and awakening. To identify different vigilance states, even a well-trained expert must spend a lot of time analyzing a mass of physiological recording data. This study proposes an automatic vigilance stages classification method for analyzing EEG signals in rats. The EEG signals were transferred by fast Fourier transform before extracting features. These extracted features were then used as training patterns to construct the proposed classification system. The proposed classification system contains two functional units. The first unit is principle component analysis (PCA) method, which is used to project the high dimensional features into the lower dimensional subspace. The second unit is the k-nearest neighbor (k-NN) method, which identifies the physiological state in each EEG signal epoch. Based on the results of analyzing 810 epochs of EEG signal, the proposed classification method achieves satisfactory classification accuracy for vigilance states. Based on machine-learning algorithms, the classifier learns to approach the configuration that best fits the categorization task. Therefore, additional training in searching best parameters and thresholds can be avoided. Moreover, the PCA algorithm projects data instances into a 3-D space, making it possible to visualize state-changing dynamics. Experimental results show that the proposed machine-learning based classifier performs better than conventional vigilance state classification algorithms. The results also suggest that it is possible to identify the vigilance states with only EEG signals using the proposed pattern recognition technique.
關聯:	Expert Systems and Applications 38(8), pp.10153-10160
DOI:	10.1016/j.eswa.2011.02.076
顯示於類別:	[電機工程學系暨研究所] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	297	檢視/開啟

在機構典藏中所有的資料項目都受到原著作權保護.

TAIR相關文章

資料載入中.....