Magnitude Squared of Coherence to Detect ImaginaryMovement

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dc.contributor.author Santos Filho, Sady Antonio
dc.contributor.author Tierra-Criollo, Carlos Julio
dc.contributor.author Souza, Ana Paula
dc.contributor.author Silva Pinto, Marcos Antonio
dc.contributor.author Cunha Lima, Maria Luiza
dc.contributor.author Manzano, Gilberto Mastrocola [UNIFESP]
dc.date.accessioned 2016-01-24T13:52:00Z
dc.date.available 2016-01-24T13:52:00Z
dc.date.issued 2009-01-01
dc.identifier http://dx.doi.org/10.1155/2009/534536
dc.identifier.citation Eurasip Journal On Advances in Signal Processing. New York: Hindawi Publishing Corporation, 12 p., 2009.
dc.identifier.issn 1687-6172
dc.identifier.uri http://repositorio.unifesp.br/handle/11600/31116
dc.description.abstract This work investigates the Magnitude Squared of Coherence (MSC) for detection of Event Related Potentials (ERPs) related to left-hand index finger movement. Initially, ERP presence was examined in different brain areas. To accomplish that, 20 EEG channels were used, positioned according to the 10-20 international system. the grand average, resulting from 10 normal subjects showed, as expected, responses at frontal, central, and parietal areas, particularly evident at the central area (C3, C4, Cz). the MSC, applied to movement imagination related EEG signals, detected a consistent response in frequencies around 0.3-1 Hz (delta band), mainly at central area (C3, Cz, and C4). Ability differences in control imagination among subjects produced different detection performance. Some subjects needed up to 45 events for a detectable response, while for some others only 10 events proved sufficient. Some subjects also required two or three experimental sessions in order to achieve detectable responses. for one subject, response detection was not possible at all. However, due to brain plasticity, it is plausible to expect that training sessions (to practice movement imagination) improve signal-noise ratio and lead to better detection using MSC. Results are sufficiently encouraging as to suggest further exploration of MSC for future BCI application. Copyright (C) 2009 Sady Antonio Santos Filho et al. en
dc.description.sponsorship Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)
dc.description.sponsorship Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorship Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent 12
dc.language.iso eng
dc.publisher Hindawi Publishing Corporation
dc.relation.ispartof Eurasip Journal On Advances in Signal Processing
dc.rights Acesso aberto
dc.title Magnitude Squared of Coherence to Detect ImaginaryMovement en
dc.type Artigo
dc.contributor.institution Universidade Federal de Minas Gerais (UFMG)
dc.contributor.institution Universidade Federal de São Paulo (UNIFESP)
dc.description.affiliation Univ Fed Minas Gerais, Dept Elect Engn, Biomed Engn Studies & Res Grp NEPEB, BR-31270010 Belo Horizonte, MG, Brazil
dc.description.affiliation Univ Fed Minas Gerais, Dept Arts & Social Sci, BR-31270010 Belo Horizonte, MG, Brazil
dc.description.affiliation Universidade Federal de São Paulo, Dept Neurol, BR-04023062 São Paulo, Brazil
dc.description.affiliationUnifesp Universidade Federal de São Paulo, Dept Neurol, BR-04023062 São Paulo, Brazil
dc.identifier.file WOS000270479300001.pdf
dc.identifier.doi 10.1155/2009/534536
dc.description.source Web of Science
dc.identifier.wos WOS:000270479300001



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