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    • Dpto. Teoría de la Señal y Comunicaciones e Ingeniería Telemática
    • DEP71 - Artículos de revista
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    Por favor, use este identificador para citar o enlazar este ítem:http://uvadoc.uva.es/handle/10324/21744

    Título
    Analysis of the Non-stationarity of Neural Activity during an Auditory Oddball Task in Schizophrenia
    Autor
    Núñez Novo, PabloAutoridad UVA
    Poza Crespo, JesúsAutoridad UVA Orcid
    Gómez Pilar, Javier
    Bachiller Matarranz, Alejandro
    Gómez Peña, CarlosAutoridad UVA Orcid
    Lubeiro Juárez, Alba
    Molina Rodríguez, VicenteAutoridad UVA Orcid
    Hornero Sánchez, RobertoAutoridad UVA Orcid
    Año del Documento
    2016
    Editorial
    IEEE Conference Publications
    Descripción
    Producción Científica
    Documento Fuente
    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2016, p. 3724 - 3727
    Abstract
    The aim of this study was to characterize brain dynamics during an auditory oddball task. For this purpose, a measure of the non-stationarity of a given time-frequency representation (TFR) was applied to electroencephalographic (EEG) signals. EEG activity was acquired from 20 schizophrenic (SCH) patients and 20 healthy controls while they underwent a three-stimulus auditory oddball task. The Degree of Stationarity (DS), a measure of the non-stationarity of the TFR, was computed using the continuous wavelet transform. DS was calculated for both the baseline [-300 0] ms and active task [150 550] ms windows of a P300 auditory oddball task. Results showed a statistically significant increase (p<0.05) in non-stationarity for controls during the cognitive task in the central region, while less widespread statistically significant differences were obtained for SCH patients, especially in the beta-2 and gamma bands. Our findings support the relevance of DS as a means to study cerebral processing in SCH. Furthermore, the lack of statistically significant changes in DS for SCH patients suggests an abnormal reorganization of neural dynamics during an oddball task.
    Materias (normalizadas)
    Schizophrenia
    ISSN
    1557-170X
    Revisión por pares
    SI
    DOI
    10.1109/EMBC.2016.7591537
    Patrocinador
    Ministerio de Economía y Competitividad (TEC2014-53196-R)
    Junta de Castilla y León (VA059U13)
    Version del Editor
    http://ieeexplore.ieee.org/servlet/opac?punumber=1000269
    Idioma
    eng
    URI
    http://uvadoc.uva.es/handle/10324/21744
    Derechos
    openAccess
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    • DEP71 - Artículos de revista [158]
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    Attribution-NonCommercial-NoDerivatives 4.0 InternationalExcept where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International

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