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Locating spatial patterns of waveforms during sensory perception in scalp EEG

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5 Author(s)
Brockmeier, A.J. ; Dept. of Electr. & Comput. Eng., Univ. of Florida, Gainesville, FL, USA ; Hazrati, M.K. ; Freeman, W.J. ; Lin Li
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The spatio-temporal oscillations in EEG waves are indicative of sensory and cognitive processing. We propose a method to find the spatial amplitude patterns of a time-limited waveform across multiple EEG channels. It consists of a single iteration of multichannel matching pursuit where the base waveform is obtained via the Hilbert transform of a time-limited tone. The vector of extracted amplitudes across channels is used for classification, and we analyze the effect of deviation in temporal alignment of the waveform on classification performance. Results for a previously published dataset of 6 subjects show comparable results versus a more complicated criteria-based method.

Published in:

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Date of Conference:

Aug. 28 2012-Sept. 1 2012