Methods Perform optical measurements of transmembrane potential using voltage sensitive dye.
Identify and map gastric electrical activity in normal and diabetic subjects. Correlate optical measurements with extracellular electrodes. Activate green light filters to induce the fluorescence of the dye. Record data into a CCD array using an AstroCamera. Results Under Construction Platinum Electrode Recordings Goal Characterize the propagation of gastric electrical activity in normal and diseased tissue.