I'm interested in developing an in-class demonstration of the resting
membrane potential of a cell and was wondering if anyone has ever
developed such a demonstration. This is for a class in physiological
psychology that I will be teaching (lecture only - no lab). Ideally it
would be accomplished with very simple materials - to make the point about
a semipermeable membrane and the right ion distribution really resulting
in a voltage gradient! If anyone has suggestions for what may have worked
for them in the past I'd be most grateful.