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Authors: Marco Balsi 1 ; Giuseppe Filosa 1 ; Roberto Sigismondi 1 ; Giancarlo Valente 1 ; Giulia Barbati 2 ; Filippo Zappasodi 3 ; Sara Graziadio 1 ; Camillo Porcaro 2 and Franca Tecchio 3

Affiliations: 1 Università “La Sapienza”, Italy ; 2 AFaR – Center of Medical Statistics & IT, Fatebenefratelli Hospital, Italy ; 3 ISTC-CNR, Italy

Abstract: A constraint function expressing a priori information about the structure of data recorded in a MEG experiment is used to bias ICA towards a more realistic decomposition. To do so, a function measuring sensitivity to the stimulation considered is added to the usual contrast function to be optimized. Experiments show that the proposed algorithm effectively succeeds in separating physiologically significant activities that standard ICA fails to distinguish in half of the cases.

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Paper citation in several formats:
Balsi, M.; Filosa, G.; Sigismondi, R.; Valente, G.; Barbati, G.; Zappasodi, F.; Graziadio, S.; Porcaro, C. and Tecchio, F. (2005). Functional Constraints Added to an ICA Separating Algorithm: an Example on Magnetoencephalographic Signals. In Proceedings of the 1st International Workshop on Biosignal Processing and Classification (ICINCO 2005) - BPC; ISBN 972-8865-35-X, SciTePress, pages 35-41. DOI: 10.5220/0001196300350041

@conference{bpc05,
author={Marco Balsi. and Giuseppe Filosa. and Roberto Sigismondi. and Giancarlo Valente. and Giulia Barbati. and Filippo Zappasodi. and Sara Graziadio. and Camillo Porcaro. and Franca Tecchio.},
title={Functional Constraints Added to an ICA Separating Algorithm: an Example on Magnetoencephalographic Signals},
booktitle={Proceedings of the 1st International Workshop on Biosignal Processing and Classification (ICINCO 2005) - BPC},
year={2005},
pages={35-41},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001196300350041},
isbn={972-8865-35-X},
}

TY - CONF

JO - Proceedings of the 1st International Workshop on Biosignal Processing and Classification (ICINCO 2005) - BPC
TI - Functional Constraints Added to an ICA Separating Algorithm: an Example on Magnetoencephalographic Signals
SN - 972-8865-35-X
AU - Balsi, M.
AU - Filosa, G.
AU - Sigismondi, R.
AU - Valente, G.
AU - Barbati, G.
AU - Zappasodi, F.
AU - Graziadio, S.
AU - Porcaro, C.
AU - Tecchio, F.
PY - 2005
SP - 35
EP - 41
DO - 10.5220/0001196300350041
PB - SciTePress