Master of Sciences
SIGNALS AND IMAGE IN BIOLOGY AND MEDICINE
Experimental neuronal signal processing
Analyze of Action Potentials trains
Xavier GODIVIER.

Training course carried out at the Theoretical Institute of Biology of the University of Angers
February 1 at June 30, 1994, under the direction of  Dr. F Chapeau-Blondeau


Abstract

This study relates to the activity of neurons exchanging trains of action potentials, in which we seek to detect possible structures, for a better comprehension of the informational capacities of the neural networks. The studied trains were recorded in vivo at the Laboratory of Neurophysiology (URA CNRS 611), University of Angers.
To analyze them we use traditional techniques of signal processing and others more recent which, in their new uses in electrophysiology, make it possible to obtain richer characterizations.
We thus implemented techniques resulting from the dynamics of the nonlinear systems, study of deterministic chaos, fractal geometry, or of the models of fractional Brownian movements. These methods made it possible in certain cases to highlight, in the studied signals, behaviors which do not appear by means of conventional analyses.



return to Curiculum vitae

return to first page