excitation

noun4

1. •
   The act of exciting or putting in motion; the act of rousing up or awakening.
2. •
   The act of producing excitement (stimulation); also, the excitement produced.

   • These women are experts at flattery, cajolery and sexual excitation, and also possess unusual talents for stirring up quarrels, stimulating jealousies and spreading slander and malicious rumors. — 1965
3. •
   A transition of a nucleus, atom or molecule to an excited state by the absorption of a quantum of energy; the opposite of relaxation.
4. •
   The activity produced in an organ, tissue, or part, such as a nerve cell, as a result of stimulation.