Ok so for a bit of a background, I am doing a science project looking at the action potentials of the earthworm. I anaesthatized the worms then hooked them up to a spiker box (http://backyardbrains.com/products/spikerbox) and stimulated them. This is an average result:
What I am confused about is why the action potential goes negative first before then going back up. From my readings online, I thought that the action potentials were meant to go up first then travel down and then continue on its course. If it helps I used a program called audacity to record the action potentials.
Thanks very much guys. Sorry if I'm not being clear. Just ask anything if you need more information!