Short-window spectral analysis of cortical event-related potentials by adaptive multivariate autoregressive modeling: data preprocessing, model validation, and variability assessment

Biol Cybern. 2000 Jul;83(1):35-45. doi: 10.1007/s004229900137.


In this article we consider the application of parametric spectral analysis to multichannel event-related potentials (ERPs) during cognitive experiments. We show that with proper data preprocessing, Adaptive MultiVariate AutoRegressive (AMVAR) modeling is an effective technique for dealing with nonstationary ERP time series. We propose a bootstrap procedure to assess the variability in the estimated spectral quantities. Finally, we apply AMVAR spectral analysis to a visuomotor integration task, revealing rapidly changing cortical dynamics during different stages of task processing.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Cerebral Cortex / physiology*
  • Cognition / physiology
  • Evoked Potentials / physiology*
  • Macaca
  • Models, Neurological*
  • Multivariate Analysis
  • Pattern Recognition, Visual / physiology
  • Psychomotor Performance / physiology
  • Reproducibility of Results