Innervation

n.	1.	The act of innerving or stimulating.
	2.	(Physiol.) Special activity excited in any part of the nervous system or in any organ of sense or motion; the nervous influence necessary for the maintenance of life, and the functions of the various organs.
	3.	(Anat.) The distribution of nerves in an animal, or to any of its parts.

Noun	1.	innervation - the neural or electrical arousal of an organ or muscle or gland Synonyms: excitation, irritation
	2.	innervation - the distribution of nerve fibers to an organ or body region

arousal, excitation, irritation