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 I've learned about electrical and chemical signaling in the brain before-- on more than one occasion, actually. I knew the textbook explanation that I've learned in a series of bio classes... but, as always, Professor Grobstein has changed the way that I understand the intricacies and complexities of life.

Thinking of the electro-chemical gradient along the axon, of the negative/positive charges, as a series of batteries moving across and along the axonal membrane actually made the concept easier for me to grasp. I do have to admit that it took more than a good minute to wrap my mind around it. The idea of the batteries across the membrane and ALONG it, thereby propagating the action potential, made more sense than the idea of chemical and voltage gated channels and pumps... doing things...

Yeah.