Minimum electrode spacing for mapping ventricular fibrillation using spatial sampling theory

Conference Paper

Electrode arrays are commonly used to study spatial patterns during ventricular fibrillation (VF) where the choice of spacing between electrodes is an important decision. The Nyquist criterion states that an electrode spacing smaller than half the smallest significant wavelength is required to avoid spatial aliasing. The authors select a minimum interelectrode spacing on the basis of band-limited wavenumber power spectra of high-resolution VF data. Data were simultaneously recorded from a square 11-11 array of unipolar electrodes spaced 0.28 mm part. 140 Wavenumber spectra were calculated using the zero delay wavenumber spectrum method. Insignificant power was associated with almost all wavelengths shorter than 2.8 mm, suggesting that, for unipolar electrodes, spacing of 1 mm is adequate to study early VF.

Full Text

Duke Authors

Cited Authors

  • Bayly, PV; Johnson, EE; Ideker, IRE; Smith, WM

Published Date

  • January 1, 1992

Published In

  • Proceedings Computers in Cardiology, Cic 1992

Start / End Page

  • 5 - 8

International Standard Book Number 10 (ISBN-10)

  • 0818635525

International Standard Book Number 13 (ISBN-13)

  • 9780818635526

Digital Object Identifier (DOI)

  • 10.1109/CIC.1992.269461

Citation Source

  • Scopus