Effect of data segmentation on coherence estimates of cardiac rhythms

Kristina M. Ropella*, Alan Varteres Sahakian, Jeffrey M. Baerman, Steven Swiryn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Both fibrillatory and nonfibrillatory cardiac rhythms were analyzed for coherence spectra while varying the segmentation of finite records of data. Results indicate that although the magnitude and mean of the magnitude-squared coherence function do not change significantly for nonfibrillatory rhythms, these same parameters show a marked decrease for fibrillatory rhythms. These findings are explained in terms of the bias and variance of the coherence estimate.

Original languageEnglish (US)
Pages (from-to)16-17
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume11 pt 1
StatePublished - Nov 1 1989

ASJC Scopus subject areas

  • Bioengineering


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