What do we call it when contrast between two poles of a neuron?

The contrast between two poles of a neuron is typically referred to as the "polarization" of the neuron. This involves the difference in charge between the inside and outside of the neuron's membrane, which is crucial for the generation and propagation of action potentials. The two poles are commonly described as the axon (which conducts impulses away from the cell body) and the dendrites (which receive signals). This polarization is essential for the neuron's ability to transmit electrical signals efficiently.