EEG Frequency and Phase Coupling during Human Information Processing

B. Schack; P. Rappelsberger; N. Vath; S. Weiss; E. Möller; G. Grießbach; H. Witte

doi:10.1055/s-0038-1634470

Methods of Information in Medicine, Inhaltsverzeichnis

Methods Inf Med 2001; 40(02): 106-111
DOI: 10.1055/s-0038-1634470

Original Article

Schattauer GmbH

EEG Frequency and Phase Coupling during Human Information Processing

B. Schack

¹Institute of Medical Statistics, Computer Science and Documentation, University of Jena, Germany

,

P. Rappelsberger

²Brain Research Institute (Neurophysiology), University of Vienna, Austria, Germany

,

N. Vath

³Institute of Psychology, University of Göttingen, Germany

,

S. Weiss

²Brain Research Institute (Neurophysiology), University of Vienna, Austria, Germany

,

E. Möller

¹Institute of Medical Statistics, Computer Science and Documentation, University of Jena, Germany

,

G. Grießbach

⁴Department of Biomedical Engineering, Technical University of Ilmenau, Germany

,

H. Witte

¹Institute of Medical Statistics, Computer Science and Documentation, University of Jena, Germany

› Institutsangaben

Abstract

Neuronal activity during information processing is represented by oscillations within local or widespread neuronal networks. These oscillations may be recorded by the EEG (electroencephalogram). The oscillatory interaction between neuronal ensembles may be at one single frequency or at different frequencies due to non-linear coupling. The investigation of momentary coherence and phase enables the examination of synchronized oscillatory network activity during fast-changing cognitive processes. On this basis information transfer from occipital areas towards frontal areas could be described during processing of visual presented words. Non-linear phase coupling between oscillations with different frequencies during memory processing was detected by means of cross-bicoherence.

Keywords

EEG (Electroencephalogram) - Phase Coupling - Coherence and Phase - Bispectral Analysis - Information Processing

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Referenzen

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