presentation/237 1st BioSim Conference - Presentation

1st BioSim Conference

Presentation

Wavelet Based Synchronization Analysis of Thalamocortical Signals

Author: Carolina Figueroa, Nonlinear Dynamics Group, Institute of Physics, University of Potsdam.

Names and affiliation of other authors:
Maria Carmen Romano, Marco Thiel, Udo Schwarz, Jürgen Kurths
Nonlinear Dynamics Group, Institute of Physics, University of Potsdam

Oral or poster: Poster

Abstract:
The study of the interaction between the thalamus and the cortex in the human brain is of fundamental importance in the investigation of cognitive function and neurophysiological disease. The complexity of EEG recordings calls for the application of systematic means of analysis that could contribute to the understanding of brain dynamics and ultimately to the improvement of clinical diagnostics. In this study we rely on the theory of synchronization of dynamical systems in combination with wavelet methods for a quantitative assessment of the interaction between brain regions. By using wavelets to decompose brain signals into different frequency bands we proceed to apply the concept of synchronization of oscillators as a mean to quantify the interaction reported in experimental studies. The significance of the results is evaluated and a comparison with alternative coherence analysis is presented. The limitations of the analysis as well as potential solutions are then outlined.

1st BioSim Conference. October 6th to October 8th, 2005. Palma de Mallorca, Spain.