Multivariate and wavelet techniques of spontaneous electroencephalography and event related potentials during children maturation
—The role of phase resetting

Catarina I. Barriga-Paulino, Angélica B. Flores, Elena I. Rodríguez-Martínez, Carlos Chinchilla, Carlos M. Gómez

Human Psychobiology Laboratory, Department of Experimental Psychology, University of Seville, Seville, Spain.

DOI: 10.4236/jbise.2013.66082                

Abstract

The purpose of this study is to analyze whether the maturation of spontaneous EEG occurs at the same rate as Late Positive Component (LPC) maturation. To that end, the spontaneous EEG rhythms power spectral density (PSD) and the LPC component in a group of children and a group of young adults were obtained and analyzed by means of Spearman’s correlation coefficients, hierarchical clustering, Principal Component Analysis (PCA) and topographical analysis. The multivariate analysis revealed a co-maturation of LPC with the delta band. This co-maturation was more evident in the more posterior region. The multivariate analysis results suggest that the maturation of the two components is temporally closely associated. The LPC in both children and young adults was produced by a combination of increase of Event Related Spectral Perturbation (ERSP) and phase resetting in the delta band. It can be suggested that the maturations of delta and LPC are functionally interdependent due to a possible origin of LPC as a delta phase resetting and/or because both processes depend on the same fraction of synaptic pruning.

Keywords

Cerebral Maturation; Late Positive Component; P300; Delta; Spontaneous EEG

Conflicts of Interest

The authors declare no conflicts of interest.

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