The nerves play a central role in registering, controlling, and managing the body’s well-being, and human perception in a variety of sensory capabilities enabling a comparison between the current state of well-being and how it should be, whether inside the tissues themselves (intrinsic factors) or in the environment (extrinsic factors). This helps you react to changes from inside and outside the body, and manage how you react.

Disorders in these important sensory, motor and control roles have a significant impact on mental state (pain, discomfort, sensory impairment) and ability to respond as appropriate (such as with motor control and response speed).