為了進行神經訊號的分群，學者們提出許多新的方法或演算法，
然而主成份分析依舊是最為普遍及廣為採用的工具。在本論文中
將探討spike alignment以及"sampling" method如何影響基於主
成份分析之神經訊號分群，而達成以程式快速並較佳地實現主成
份分析進行胞外及胞內神經訊號之分群。

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