Quantification of movement-related modulation on beta activity of single-trial magnetoencephalographic measurement using independent component analysis (ICA)

Yu Te Wu, Po Lei Lee, Li Fen Chen, Tzu Chen Yeh, Jen Chuen Hsieh, Low Tone Ho

研究成果: Conference contribution同行評審

2 引文 斯高帕斯(Scopus)

摘要

An ICA-based method is proposed to quantify the single-trial response of beta-band activities of sensorimotor rhythm in the right index finger lifting task. The magnetic fields of four right-handed subjects (2 males and 2 females) were recorded by a whole-head magnetoencephalography. ICA was applied to separate each rhythmic epoch into temporally independent components by means of an un-mixing matrix. According to the temporal and spatial characteristics of the decomposed components, task-related ones are selected for data reconstruction. Compared with the conventional Amplitude Modulation (AM) method with 100 averaged trials, the ICA-based method not only preserved the trial-by-trial variabilities of rhythmic activities, but also significantly improves the decreased amplitudes in event-related desynchronization (ERD) and the rebounds in event-related synchronization (ERS).

原文English
主出版物標題Conference Proceedings - 1st International IEEE EMBS Conference on Neural Engineering
編輯Laura J. Wolf, Jodi L. Strock
發行者IEEE Computer Society
頁面396-398
頁數3
ISBN(電子)0780375793
DOIs
出版狀態Published - 2003
事件1st International IEEE EMBS Conference on Neural Engineering - Capri Island, Italy
持續時間: 20 3月 200322 3月 2003

出版系列

名字International IEEE/EMBS Conference on Neural Engineering, NER
2003-January
ISSN(列印)1948-3546
ISSN(電子)1948-3554

Conference

Conference1st International IEEE EMBS Conference on Neural Engineering
國家/地區Italy
城市Capri Island
期間20/03/0322/03/03

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