A statistical technique for measuring synchronism between cortical regions in the EEG during rhythmic stimulation

  • De Sá A
  • Infantosi A
  • Simpson D
  • 22

    Readers

    Mendeley users who have this article in their library.
  • 13

    Citations

    Citations of this article.

Abstract

The coherence function has been widely applied in quantifying the degree of synchronism between electroencephalogram (EEG) signals obtained from different brain regions. However, when applied to investigating synchronization resulting from rhythmic stimulation, misleading results can arise from the high correlation of background EEG activity. We, thus propose a modified measure, which emphasizes the synchronized stimulus responses and reduces the influence of the spontaneous EEG activity. Critical values for this estimator are derived and tested in Monte Carlo simulations. The effectiveness of the method is illustrated on data recorded from 12 young normal subjects during rhythmic photic stimulation.

Author-supplied keywords

  • Coherence
  • EEG
  • Rhythmic stimulation
  • Synchrony measure

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • Antonio Mauricio F.L.Miranda De Sá

  • Antonio Fernando C. Infantosi

  • David M. Simpson

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free