Every thought we have, every sensation we experience, and every action we take requires our brains. While the brain is an incredibly complex tissue, involving ~86 BILLION neurons, with TRILLIONS of connections between neurons, communication between neurons starts with the action potential. In this class, we will go over the basics of the action potential! Content will dabble in physics, chemistry, and biology to explain how neurons generate potential differences across the membranes, and use flow of ions into or out of the cell to communicate!