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Descripción
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| In this paper we study the structural properties of a functional network of the human brain during the evaluation of mental tasks using the concept of betweenness centrality. We carry out the experiments involving the alternating trials of mental task evaluation with simultaneous registration of electroencephalographic (EEG) data. Using the wavelet phase coherence we reconstruct the functional multiplex network of the brain considering the different typical frequency bands of EEG activity as interconnected layers. We reveal that transition from a resting state to evaluation of a cognitive task leads to the strong outflow of shortest paths from low frequencies and strengthening of high-frequency connectivity in the brain. At the same time, we observe that mental activity shapes the shortest paths in a more uniform distribution across the brain, which implies the emergence of a more distributed functional network. Our results are in good agreement with recent studies of cognitive activity and can be implied in the design of brain-computer interfaces for the estimation of cognitive load or attention. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Physical Review e |
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ISSN
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2470-0045 |
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Factor de impacto JCR
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2,284 |
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Información de impacto
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Datos JCR del año 2017 |
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Volumen
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98 |
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DOI
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10.1103/PhysRevE.98.062413 |
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Número de revista
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Desde la página
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062413-1 |
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Hasta la página
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062413-9 |
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Mes
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SIN MES |
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Ranking
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Q1 |