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http://hdl.handle.net/11154/1178
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Title: | Exploration of event-induced EEG phase synchronization patterns in cognitive tasks using a time-frequency-topography visualization system |
Authors: | Alba, A Marroquin, JL Pena, J Harmony, T González-Frankenberger, B |
Issue Date: | 2007 |
Abstract: | In this paper, we present a method for the study of synchronization patterns measured from EEG scalp potentials in psychophysiological experiments. This method is based on various techniques: a time-frequency decomposition using sinusoidal filters which improve phase accuracy for low frequencies, a Bayesian approach for the estimation of significant synchrony changes, and a time-frequency-topography visualization technique which allows for easy exploration and provides detailed insights of a particular experiment. Particularly, we focus on in-phase synchrony using an instantaneous phase-lock measure. We also discuss some of the most common methods in the literature, focusing on their relevance to long-range synchrony analysis this discussion includes a comparison among various synchrony measures. Finally, we present the analysis of a figure categorization experiment to illustrate our method. (c) 2006 Elsevier B.V. All rights reserved. |
URI: | http://hdl.handle.net/11154/1178 |
ISSN: | 1650270 |
Appears in Collections: | Departamento de Biología Celular
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