Mathematical Distinction in Action Potential between Primo-Vessels and Smooth Muscle
Figure 4
Representative traces for the two types of action potential pulses from Primo-vessels and their derivatives. The derivative of Type I pulse had a shape with short, sharp positive and negative within depolarizing from the rest potential and repolarizing to the rest potential. For the Type II, the derivative consisted of short, sharp positive and broad, hill-like negative. There was no significant difference in amplitude of these two types, but huge difference existed in FW.
