Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Spectral synchronicity in brain signals
AU - Carolina, Euán
AU - Hernando, Ombao
AU - Joaquin, Ortega
PY - 2018/8/30
Y1 - 2018/8/30
N2 - 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.
AB - 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.
KW - brain signals
KW - EEG data
KW - hierarchical spectral merger
KW - spectral synchronicity
KW - time series clustering
KW - total variation distance
U2 - 10.1002/sim.7695
DO - 10.1002/sim.7695
M3 - Journal article
SP - 1
EP - 19
JO - Statistics in Medicine
JF - Statistics in Medicine
SN - 0277-6715
ER -