And now potassium ions where the stimulus actually took place, the potassium channels will begin to open up and our potassium ions will begin to move down the electrochemical gradient from the inside of the cell to the outside of the cell. And this is known as our repolarization period. Now, we're going to once again change the polarity of the cell. And so the inside will become negatively charged, because we have these positively charged sodium potassium irons leaving. So that means the inside will become negatively charged, the outside will become positively charged, but at the same exact time, the concentration of charge, of positive charge increases in the adjacent region. And that causes our sodium voltage gated channels to open up in the adjacent region.