Resistance is the opposition to the flow of electric current. The lower the resistance, the easier it is for current to flow.

In a neuron, the speed of conduction is directly proportional to the square root of the ratio of the internal resistance of the neuron to the external resistance of the extracellular fluid.

Therefore, if the internal resistance is low, the conduction speed will be higher. This is because it means that the current will be able to flow more easily through the neuron, and the transmission of the electrical signal will be faster.