Title :
The effect of filtering in the EEG correlation dimension estimation: experimental results
Author :
Lo, Pei-Chen ; Principe, Jose
Author_Institution :
Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA
Abstract :
The effect of linear filtering on the estimation of the correlation dimension of the electroencephalogram (EEG) is described. Three types of filters and several bandwidths are applied to the signal and to white noise sequences, in order to measure experimentally the effect in the correlation dimension. The results show that a reduction in bandwidth does affect the correlation exponent map of white noise sequences, so that the usual way of displaying the correlation dimension, comparing it to the theoretically straight line of the white noise, is misleading. It is suggested that the plot of the correlation exponent (of the EEG or any other bandlimited signal) should be graphed with the correlation exponent of white noise for the same measurement bandwidth
Keywords :
electroencephalography; signal processing; EEG correlation dimension estimation; correlation exponent map; linear filtering effect; measurement bandwidth; white noise; Bandwidth; Electroencephalography; Extraterrestrial measurements; Filtering; Finite impulse response filter; Maximum likelihood detection; Noise robustness; Nonlinear dynamical systems; Nonlinear filters; White noise;
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
DOI :
10.1109/IEMBS.1989.95911
