The Cardiac Action Potential Imaging System (CAPIS) is an optical mapping tool designed to show the propagation of action potential in a small heart. The input to the system is an in-vitro baby rabbit heart, treated with a potentiometric dye and chemically simulated to mimic the conditions of JET arrhythmia. When development is complete, CAPIS will be able to generate images showing the intensity of the action potential in various locations of the heart across the time frame in which the experiment is conducted. 
