Now, these changes in ion concentration create a difference in voltage or something called a cell voltage. And this difference in voltage creates electrical signals. Now, these electrical signals travel from one cell to another, and this is how cells communicate. Now let's look at something called a resting electrical potential resell. Now, our cells within our body, specifically neuron cells, establish electrical potentials or cell voltages at rest. And what this guy simply means, it's the cell voltage produced by our cell when no signals are being transducted or conducted from one cell to another.