Effect of data segmentation on coherence estimates of cardiac rhythms

Kristina M. Ropella; Alan Varteres Sahakian; Jeffrey M. Baerman; Steven Swiryn

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

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

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 language	English (US)
Pages (from-to)	16-17
Number of pages	2
Journal	Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume	11 pt 1
State	Published - Nov 1 1989

ASJC Scopus subject areas

Bioengineering

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Cite this

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title = "Effect of data segmentation on coherence estimates of cardiac rhythms",

abstract = "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.",

author = "Ropella, {Kristina M.} and Sahakian, {Alan Varteres} and Baerman, {Jeffrey M.} and Steven Swiryn",

year = "1989",

month = nov,

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language = "English (US)",

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T1 - Effect of data segmentation on coherence estimates of cardiac rhythms

AU - Ropella, Kristina M.

AU - Sahakian, Alan Varteres

AU - Baerman, Jeffrey M.

AU - Swiryn, Steven

PY - 1989/11/1

Y1 - 1989/11/1

N2 - 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.

AB - 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.

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