Imaging cardiac dynamics using low-cost ultra-high-power light emitting diodes and voltage-sensitive dyes

Abstract

We describe the characteristics of low-cost ultra-high-power light emitting diodes (LEDs) for use in optical imaging experiments. We use the LEDs in experiments with bullfrog cardiac tissue and find that the signal-to-noise ratio is comparable to other commonly used illumination sources.

A practical description of the use of high-power light emitting diodes for advanced imaging methods