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. So we have depolarization taking place here and repolarization taking place here. Now in this same effect, so we basically have a domino effect taking place. And so each adjacent consecutive region will basically be depolarized as our action potential moves along our cell membrane.