This paper aims to discuss the control of a neuron’s firing. It is desired to control the neuron by injecting a current, whichallows the voltage of the neuron membrane to reach what is called the threshold voltage. When a neuron reaches this voltage,the potassium and sodium ion gates open allowing for the neuron to fire an action potential, observed as a voltage spike.Controlling this effect is helpful for those with certain diseases or disabilities. Four types of controllers are designed andsimulated on both the nonlinear system of the neuron and its linearized form, and all are found to meet specifications.