How many times will the following loop run? 
Definitions:
Neuron Polarity
The structural and functional difference between the axon and dendrites of a neuron, which determines the direction of nerve impulse transmission.
Potential Difference
The difference in electric potential energy per unit charge between two points in a circuit.
Voltage-Gated Channels
Protein channels in cell membranes that open or close in response to changes in electrical potential, allowing ions to pass in and out of the cell.
Repolarization
The process by which cells, particularly nerve and muscle cells, restore their membrane potential to a resting state after depolarization.
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