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    Spectral synchronicity in brain signals

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    Type
    Article
    Authors
    de Jesus Euan Campos, Carolina cc
    Ombao, Hernando cc
    Ortega, Joaquín
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Statistics Program
    Date
    2018-05-03
    Online Publication Date
    2018-05-03
    Print Publication Date
    2018-08-30
    Permanent link to this record
    http://hdl.handle.net/10754/627863
    
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    Abstract
    This paper addresses the problem of identifying brain regions with similar oscillatory patterns detected from electroencephalograms. We introduce the hierarchical spectral merger (HSM) clustering method where the feature of interest is the spectral curve and the similarity metric used is the total variance distance. The HSM method is compared with clustering using features derived from independent-component analysis. Moreover, the HSM method is applied to 2 different electroencephalogram datasets. The first was recorded at resting state where the participant was not engaged in any cognitive task; the second was recorded during a spontaneous epileptic seizure. The results of the analyses using the HSM method demonstrate that clustering could evolve over the duration of the resting state and during epileptic seizure.
    Citation
    Euán C, Ombao H, Ortega J (2018) Spectral synchronicity in brain signals. Statistics in Medicine. Available: http://dx.doi.org/10.1002/sim.7695.
    Sponsors
    The authors thank the referees for their comments that led to a significant improvement of this work. This work was partially supported by (1) CONACYT, México, scholarship AS visiting research student; (2) CONACYT, México, Proyectos 169175Análisis Estadístico de Olas Marinas, Fase II, and 234057Análisis Espectral, Datos Funcionales y Aplicaciones; and (3) Centro de Investigación en Matemáticas (CIMAT). A.C. Euán wishes to thank the UC Irvine Space Time Modeling Group for the invitation to collaborate as a visiting scholar in their research group. This research was initiated at UC Irvine and completed at the King Abdullah University of Science and Technology (KAUST). The authors thank Dr Steven C. Cramer of the UC Irvine Department of Neurology for sharing the EEG data used in this paper. This work was done while J.O. was visiting, on sabbatical leave from CIMAT and with support from CONACYT, México, and the Departamento de Estadística e I.O., Universidad de Valladolid. Their hospitality and support are gratefully acknowledged.
    Publisher
    Wiley
    Journal
    Statistics in Medicine
    DOI
    10.1002/sim.7695
    PubMed ID
    29726025
    arXiv
    1507.05018
    Additional Links
    https://onlinelibrary.wiley.com/doi/full/10.1002/sim.7695
    http://arxiv.org/pdf/1507.05018
    ae974a485f413a2113503eed53cd6c53
    10.1002/sim.7695
    Scopus Count
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    Articles; Statistics Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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