When a neuron is depolarized the inside of the neuron becomes more thereby decreasing the difference between the outside and the inside when the neuron was at rest.

When a neuron is depolarized the inside of the neuron becomes more positive by decreasing the difference between the outside and the inside when the neuron was at rest.

This is due to more Na+ influx into the axoplasm with  the positive charges which reverses the negative charges left behind by the K+ leaking out of the axoplasm, which makes it to be  deficient in positive charges and therefore negative.However, depolarization with the influx of Na+ with its positive ions, reverses this and makes the inside positive,

Explanation:

oxygen +1 most likely