臺灣博碩士論文加值系統

本論文主要目的是研究禪定過程中視覺誘發電位（VEP）的變化，由於實驗組在禪定過程中必須閉眼專注，因此本研究採用閉眼閃光刺激產生視覺誘發電位，實驗組與控制組皆為健康且相同年齡範圍的受測者，並且以傳統的平均法與獨立成分分析法（ICA）對實驗組與控制組的VEP特徵進行分析，比較兩者之間的差異。
由實驗結果能得到四個結論：（1）在波峰III-IV-V的平均振幅分析上，實驗組隨著禪定過程增加，控制組隨著靜坐過程先增加再減少；（2）在波峰V-VI-VII的平均振幅分析上，實驗組與控制組皆隨著禪定（靜坐）過程增加，並且實驗組的增量較小。在獨立成分分析方面，實驗組的VEP成分波形一致性隨禪定過程持續增加，控制組則隨靜坐過程先減少再增加；而在權重空間分布的分析，實驗組在禪定過程中頭頂（Pz）的權重變化為先減少再增加，並且後腦（Oz）的權重變化則隨著禪定過程減少，與控制組的權重變化是相反的。
因此，造成實驗組與控制組VEP特徵的差異主要是禪定過程引起大腦皮質層的作用改變，並且國外研究指出背景腦電波的能量與視覺誘發電位的振幅有很高的相關性，所以禪定過程視覺誘發電位的變化可能是因為腦電波的改變。

中文摘要------I
英文摘要-----II
目錄----------V
表目錄-----VIII
圖目錄-------IX
第一章 前言---1
1.1研究背景---1
1.2研究動機---2
1.3章節安排---3
第二章 實驗流程與方法---4
2.1誘發電位介紹---4
2.2視覺誘發電位介紹---8
2.2.1圖形刺激---9
2.2.2閃光刺激---15
2.3實驗方法---17
2.3.1實驗設備簡介---17
2.3.2實驗流程---19
第三章 研究理論與方法---20
3.1平均法---20
3.2獨立成分分析法---21
3.2.1獨立成分分析簡介---21
3.2.2獨立成分分析架構---22
3.2.3前置處理方法---24
3.2.4快速ICA---27
3.3獨立成分分析應用於VEP分析---30
第四章 實驗結果---32
4.1平均法應用於VEP實驗結果---32
4.1.1波峰III-IV-V實驗結果---33
4.1.2波峰V-VI-VII實驗結果---36
4.2獨立成分分析應用於VEP（一）：成分間相關性之探討---40
4.2.1實驗結果---40
4.2.2討論---43
4.3獨立成分分析應用於VEP(二)：成分重組之特徵強化VEP總覽---45
4.3.1 P100振幅分布實驗結果與討論---45
4.3.2特徵與波形相關性強化---49
4.4獨立成分分析應用於VEP（三）：獨立成分空間分布---54
4.4.1實驗結果---55
4.4.2討論---61
第五章 結論與未來展望---62
5.1結論---62
5.2未來展望---63
參考文獻---64
附錄A---68
附錄B---69
附錄C---70

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