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Blind Source Separation of Sparse, Overcomplete Mixtures and Application to Neural Recordings
Zitatschlüssel Natora2009a
Autor Natora, M., Franke, F., Munk, M.H., and Obermayer, K.
Buchtitel In Proceedings ICA'2009
Seiten 459-466
Jahr 2009
DOI 10.1007/978-3-642-00599-2_58
Journal Lecture Notes in Computer Science
Jahrgang 5441/2009
Zusammenfassung We present a method which allows for the blind source separation of sparse overcomplete mixtures. In this method, linear filters are used to find a new representation of the data and to enhance the signal-to-noise ratio. Further, “Deconfusion”, a method similar to the independent component analysis, decorrelates the filter outputs. In particular, the method was developed to extract neural activity signals from extracellular recordings. In this sense, the method can be viewed as a combined spike detection and classification algorithm. We compare the performance of our method to those of existing spike sorting algorithms, and also apply it to recordings from real experiments with macaque monkeys.
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