A statistical technique for measuring synchronism between cortical regions in the EEG during rhythmic stimulation
A statistical technique for measuring synchronism between cortical regions in the EEG during rhythmic stimulation
The coherence function has been widely applied in quantifying the degree of synchronism between electroencephalogram (EEG) signals obtained from different brain regions. However, when applied to investigating synchronization resulting from rhythmic stimulation, misleading results can arise from the high correlation of background EEG activity. The authors, thus propose a modified measure, which emphasizes the synchronized stimulus responses and reduces the influence of the spontaneous EEG activity. Critical values for this estimator are derived and tested in Monte Carlo simulations. The effectiveness of the method is illustrated on data recorded from 12 young normal subjects during rhythmic photic stimulation.
1211-15
Miranda de Sa, A.M.F.L.
fa98bd24-529c-407a-ba6d-9cddf8554991
Infantosi, A.F.C.
35b46937-63c6-421a-ab26-dc950c194bbd
Simpson, D.M.
53674880-f381-4cc9-8505-6a97eeac3c2a
2001
Miranda de Sa, A.M.F.L.
fa98bd24-529c-407a-ba6d-9cddf8554991
Infantosi, A.F.C.
35b46937-63c6-421a-ab26-dc950c194bbd
Simpson, D.M.
53674880-f381-4cc9-8505-6a97eeac3c2a
Miranda de Sa, A.M.F.L., Infantosi, A.F.C. and Simpson, D.M.
(2001)
A statistical technique for measuring synchronism between cortical regions in the EEG during rhythmic stimulation.
IEEE Transactions on Biomedical Engineering, 48 (10), .
(doi:10.1109/10.951526).
Abstract
The coherence function has been widely applied in quantifying the degree of synchronism between electroencephalogram (EEG) signals obtained from different brain regions. However, when applied to investigating synchronization resulting from rhythmic stimulation, misleading results can arise from the high correlation of background EEG activity. The authors, thus propose a modified measure, which emphasizes the synchronized stimulus responses and reduces the influence of the spontaneous EEG activity. Critical values for this estimator are derived and tested in Monte Carlo simulations. The effectiveness of the method is illustrated on data recorded from 12 young normal subjects during rhythmic photic stimulation.
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Published date: 2001
Organisations:
Human Sciences Group
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Local EPrints ID: 10859
URI: http://eprints.soton.ac.uk/id/eprint/10859
ISSN: 0018-9294
PURE UUID: 9e4a910c-a915-4b7f-bb18-b9baaf11c6e3
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Date deposited: 13 Feb 2006
Last modified: 16 Mar 2024 03:29
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Author:
A.M.F.L. Miranda de Sa
Author:
A.F.C. Infantosi
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