About: Statistical evaluation of coherence estimated from optimally beamformed signals.

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In this paper we investigate a situation where we want to perform a coherence analysis of two signal sources, one of which is measured directly, and the other is measured through a sensor array affected by noise. To extract the latter signal, we suggest the use of the optimal beamforming with reference. We note, however, that this approach results in a coherence estimate that is noticeably biased, and cannot be evaluated by the known statistical tests. We therefore derive a new statistical test, that allows the evaluation of the biased coherence estimate. We illustrate the applicability of our methodology on the coherence analysis of EEG and EMG signals. We note that the suggested approach has several advantages over the surface Laplacian, which is a spatial filter commonly used in the EEG-EMG coherence analysis. In this paper we investigate a situation where we want to perform a coherence analysis of two signal sources, one of which is measured directly, and the other is measured through a sensor array affected by noise. To extract the latter signal, we suggest the use of the optimal beamforming with reference. We note, however, that this approach results in a coherence estimate that is noticeably biased, and cannot be evaluated by the known statistical tests. We therefore derive a new statistical test, that allows the evaluation of the biased coherence estimate. We illustrate the applicability of our methodology on the coherence analysis of EEG and EMG signals. We note that the suggested approach has several advantages over the surface Laplacian, which is a spatial filter commonly used in the EEG-EMG coherence analysis. (en)
Title	Statistical evaluation of coherence estimated from optimally beamformed signals. Statistical evaluation of coherence estimated from optimally beamformed signals. (en)
skos:prefLabel	Statistical evaluation of coherence estimated from optimally beamformed signals. Statistical evaluation of coherence estimated from optimally beamformed signals. (en)
skos:notation	RIV/68407700:21230/13:00209496!RIV14-GA0-21230___
http://linked.open...avai/predkladatel	Fakulta elektrotechnická
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GPP102/11/P109)
http://linked.open...iv/cisloPeriodika	9
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Sovka, Pavel Bortel, Radoslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta elektrotechnická
http://linked.open...dnocenehoVysledku	107766
http://linked.open...ai/riv/idVysledku	RIV/68407700:21230/13:00209496
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Beamforming; Cortico-muscular coherence; Magnitude squared coherence; Statistical distribution (en)
http://linked.open.../riv/klicoveSlovo	Beamforming Cortico-muscular coherence Magnitude squared coherence Statistical distribution
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[02CC4E9DD2D5]
http://linked.open...i/riv/nazevZdroje	Computers in Biology and Medicine
http://linked.open...in/vavai/riv/obor	FH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Spatial Filtering Techniques for High Density Electroencephalographic Recordings
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	43
http://linked.open...iv/tvurceVysledku	Bortel, Radoslav Sovka, Pavel
http://linked.open...ain/vavai/riv/wos	000324154700021
issn	0010-4825
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.compbiomed.2013.06.010
http://localhost/t...ganizacniJednotka	21230

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