And what we believe the U wave actually describes is the repolarization of all the cells found within the wall separating our two ventricles. So this wall is known as our interventricular wall. And what the uWave is believed to describe is the repolarization of all the cells found within this particular segment. So these are some of the segments and waves that one would normally find on a normal cardiogram. And this is exactly what they describe. They describe the propagation, the movement of our electrical signal as we have a change in voltage.