Detection of early cognitive processing by event-related phase synchronization analysis

In order to investigate the temporal characteristics of cognitive processing, we apply multivariate phase synchronization analysis to event-related potentials. The experimental design combines a semantic incongruity in a sentence context with a physical mismatch (color change). In the ERP average, these result in an N400 component and a P300-like positivity, respectively. The synchronization analysis shows an effect of global desynchronization in the theta band around 288ms after stimulus presentation for the semantic incongruity, while the physical mismatch elicits an increase of global synchronization in the alpha band around 204ms. Both of these effects clearly precede those in the ERP average. Moreover, the delay between synchronization effect and ERP component correlates with the complexity of the cognitive processes.

Metadaten
Author details:	Carsten Allefeld ORCiD GND, Stefan Frisch, Matthias Schlesewsky
URN:	urn:nbn:de:kobv:517-opus-20126
Publication series (Volume number):	Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (paper 074)
Publication type:	Postprint
Language:	English
Publication year:	2005
Publishing institution:	Universität Potsdam
Release date:	2008/09/10
Tag:	N400; P300; alpha; coherence; color change; phase synchronization; semantic incongruity; theta
Source:	Neuroreport. - 16 (2005), 1, pp. 13 - 16. ISSN (print) 0959-4965, ISSN (online) 1473-558X
Organizational units:	Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
	Extern / Extern
DDC classification:	5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
License (German):	Keine öffentliche Lizenz: Unter Urheberrechtsschutz
External remark:	This is a preprint of the article first published in: Neuroreport. - 16 (2005), 1, pp. 13 - 16 ISSN (print) 0959-4965 ISSN (online) 1473-558X It is not the final version published by Lippincott, Williams & Wilkins.