TY - JOUR
T1 - Off-line removal of TMS-induced artifacts on human electroencephalography by Kalman filter
AU - Morbidi, Fabio
AU - Garulli, Andrea
AU - Prattichizzo, Domenico
AU - Rizzo, Cristiano
AU - Manganotti, Paolo
AU - Rossi, Simone
PY - 2007/5/15
Y1 - 2007/5/15
N2 - In this paper we present an off-line Kalman filter approach to remove transcranial magnetic stimulation (TMS)-induced artifacts from electroencephalographic (EEG) recordings. Two dynamic models describing EEG and TMS signals generation are identified from data and the Kalman filter is applied to the linear system arising from their combination. The keystone of the approach is the use of time-varying covariance matrices suitably tuned on the physical parameters of the problem that allow to model the nonstationary components of the EEG-TMS signal. This guarantees an efficient deletion of TMS-induced artifacts while preserving the integrity of EEG signals around TMS impulses. Experimental results show that the Kalman filter is more effective than stationary filters (Wiener filter) for the problem under investigation.
AB - In this paper we present an off-line Kalman filter approach to remove transcranial magnetic stimulation (TMS)-induced artifacts from electroencephalographic (EEG) recordings. Two dynamic models describing EEG and TMS signals generation are identified from data and the Kalman filter is applied to the linear system arising from their combination. The keystone of the approach is the use of time-varying covariance matrices suitably tuned on the physical parameters of the problem that allow to model the nonstationary components of the EEG-TMS signal. This guarantees an efficient deletion of TMS-induced artifacts while preserving the integrity of EEG signals around TMS impulses. Experimental results show that the Kalman filter is more effective than stationary filters (Wiener filter) for the problem under investigation.
KW - EEG-TMS combination
KW - Electroencephalography
KW - Kalman filter
KW - TMS-induced artifact
KW - Transcranial magnetic stimulation
UR - http://www.scopus.com/inward/record.url?scp=34047155462&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34047155462&partnerID=8YFLogxK
U2 - 10.1016/j.jneumeth.2006.12.013
DO - 10.1016/j.jneumeth.2006.12.013
M3 - Article
C2 - 17399798
AN - SCOPUS:34047155462
VL - 162
SP - 293
EP - 302
JO - Journal of Neuroscience Methods
JF - Journal of Neuroscience Methods
SN - 0165-0270
IS - 1-2
ER -