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Fitting autoregressive models to EEG time series: An empirical comparison of estimates of the order

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3 Author(s)
Steinberg, H.-W. ; Universität Heidelberg, Heidelberg, Germany ; Gasser, T. ; Franke, J.

A parametrization of the spectral structure of time series data is of great interest in many fields of science such as eleetroencephalography (EEG). Autoregressive processes offer such a representation. The problem is to find a parsimonious representation which fits the data well. Three criteria for determining the order of autoregressive models are, therefore, compared. A simulation is done for studying the consistency of these criteria. A goodness-of-fit test derived from the runs test judges the adequacy of the autoregressive representation of the spectral structure of EEG data. For neurophysiological and statistical reasons, autoregressive modeling in a restricted frequency domain is introduced.

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Acoustics, Speech and Signal Processing, IEEE Transactions on  (Volume:33 ,  Issue: 1 )