Existence of an excited state is not a prerequisite for the production of inhibition; inhibition can exist apart from excitation no less than, when called forth against an excitation already in progress, it can suppress or moderate it.
-- Charles Scott Sherrington
   
  Name:
Charles Scott Sherrington
Type:
Scientist
Nationality:
British
Birth day:
November 27
Birth year:
1857
http://www.nutquote.com/quote/Charles_Scott_Sherrington