Total and partial coherence analysis of spontaneous and evoked EEG by means of multi-variable autoregressive processing

D. Liberati, M. Cursi, T. Locatelli, G. Comi, S. Cerutti

Research output: Contribution to journalArticlepeer-review

Abstract

The joint use of total and partial coherence between pairs of EEGs simultaneously recorded in a standard set, is shown to enhance what is caused by direct correlation between cortical subsystems and what is instead related to the spread of the electromagnetic field. A multi-variable autoregressive approach is employed in the computation, giving results even for a very short time window, thus allowing coherence to be investigated at the main cortical latencies of evoked potentials. In particular, when a combined visual and somatosensory stimulation is applied, cortical interactions are captured in the frequency domain.

Original languageEnglish
Pages (from-to)124-130
Number of pages7
JournalMedical and Biological Engineering and Computing
Volume35
Issue number2
Publication statusPublished - 1997

Keywords

  • Autoregressive processing
  • Coherence analysis
  • EEG

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management
  • Computer Science Applications
  • Computational Theory and Mathematics

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