An automated system using spatial oversampling for optical mapping in murine atria. Development and validation with monophasic and transmembrane action potentials

Ting Yue Yu, Fahima Syeda, Andrew P Holmes, Benjamin Osborne, Hamid Dehghani, Keith L Brain, Paulus Kirchhof, Larissa Fabritz

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)
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Abstract

We developed and validated a new optical mapping system for quantification of electrical activation and repolarisation in murine atria. The system makes use of a novel 2nd generation complementary metal-oxide-semiconductor (CMOS) camera with deliberate oversampling to allow both assessment of electrical activation with high spatial and temporal resolution (128 × 2048 pixels) and reliable assessment of atrial murine repolarisation using post-processing of signals. Optical recordings were taken from isolated, superfused and electrically stimulated murine left atria. The system reliably describes activation sequences, identifies areas of functional block, and allows quantification of conduction velocities and vectors. Furthermore, the system records murine atrial action potentials with comparable duration to both monophasic and transmembrane action potentials in murine atria.

Original languageEnglish
Pages (from-to)340-348
Number of pages9
JournalProgress in Biophysics and Molecular Biology
Volume115
DOIs
Publication statusPublished - 15 Aug 2014

Bibliographical note

Copyright © 2014. Published by Elsevier Ltd.

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