Optical imaging of activation patterns in rabbit myocardium

Rashida A. Abbas, Shien Fong Lin, John P. Wikswo

Research output: Contribution to journalConference articlepeer-review


The distribution of cardiac transmembrane potential during extracellular point stimulation reveals complex patterns of activation that cannot be explained by traditional cable theory. Simultaneous regions of depolarization and hyperpolarization exist surrounding the stimulating electrode. Epifluorescence images of cathodal stimulation in rabbit myocardium are presented here. Activation occurs from the site of depolarization called the virtual cathode.

Original languageEnglish (US)
Pages (from-to)63-64
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Issue number1
StatePublished - Dec 1 1995
Externally publishedYes
EventProceedings of the 1995 IEEE Engineering in Medicine and Biology 17th Annual Conference and 21st Canadian Medical and Biological Engineering Conference. Part 2 (of 2) - Montreal, Can
Duration: Sep 20 1995Sep 23 1995

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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