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. And so we have an influx of sodium ions into the cell around this region. And in this manner we can see that the action potential moves from this initial position where the stimulus took place, to the next position along the cell membrane of our axon. So once again, at around the same time as the sodium channels begin to close and the potassium channels begin to open in the stimulus region, in this region here, the sodium channels in the adjacent region will begin to open, causing depolarization to take place here.