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

Content Provider	IEEE Xplore Digital Library
Author	Yu-Te Wu Po-Lei Lee Li-Fen Chen Tzu-Chen Yeh Jen-Chuen Hsieh Low-Tone Ho
Copyright Year	2003
Description	Author affiliation: Inst. of Radiol. Sci., Nat. Yang-Ming Univ., Taipei, Taiwan (Yu-Te Wu)
Abstract	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).
Starting Page	396
Ending Page	398
File Size	443216
Page Count	3
File Format	PDF
ISBN	0780375793
DOI	10.1109/CNE.2003.1196844
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-03-20
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hospitals Magnetic sensors Magnetic separation Fingers Laboratories Independent component analysis Magnetic modulators Frequency synchronization Biomedical imaging Magnetic shielding
Content Type	Text
Resource Type	Article

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