title: A low-cost high-efficiency fiber-optic coupler for recording action potentials within the myocardial wall.
abstract: We present a high-efficiency, low-cost wavelength division multiplexer to record cardiac optical action potentials (APs) within the myocardial wall using optical fibers. APs with signal-to-noise ratio as high as 60, without spatial or temporal averaging, and as high as 200, with median-filtering, were recorded in rabbit ventricle.
authors.affiliation: Division of Pediatric Cardiology, Department of Pediatrics, Duke University Medical Center, Durham, NC 27710, USA. salim.idriss@duke.edu
authors.forename: Salim F
authors.initials: SF
authors.lastname: Idriss
authors.forename: Ann M
authors.initials: AM
authors.lastname: Pitruzzello
mesh_terms: D000200:Action Potentials / Q000502:physiology*; D000818:Animals; D018780:Body Surface Potential Mapping / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006329:Heart Conduction System / Q000502:physiology*; D066298:In Vitro Techniques; D008856:Microscopy, Fluorescence / Q000295:instrumentation* / Q000379:methods; D011817:Rabbits; D013050:Spectrometry, Fluorescence / Q000295:instrumentation* / Q000379:methods; D016276:Ventricular Function