| Nonlinear Dynamics, Psychology, and Life Sciences, Vol. 3, Iss. 2, Apr, 1999, pp. 129-142 @1999 Society for Chaos Theory in Psychology & Life Sciences Progressive Coherence Patterns for Electroencephalographic Phenomenology Abstract: The analysis of the EEG rhythm synchronism, based on a limited channel sampling, is a hazardous challenge notwithstanding the success of the pioneer results obtained by Takens. Although the correlation dimension remains the principal method for an estimate of the neuron synchronization degree from a single time series, the spectral coherence is an instrument largely used in the clinical analysis of the EEG-channel synergy. A wavelet extension of this instrument has been set up and tested on dynamical models endowed with synchronization and on clinical EEG time series. Keywords: human electroencephalogram (EEG), brain waves, spectral coherence, wavelets, synchronization, nonlinear models, neurodynamics |