Abstract Introduction In the words of Michel Salmon, " Between anatomy and physiology there is room for a functional physiologic “. This concept was applied to analyze our (1) Sleep Research 21, 1992,341 (2) 22, 1993, 363, (3) SLEEP 31, 2008, A219 publications on patients with Hypersomnia who had intracranial extracranial blood flow evaluations. Methods For “Functional Anatomy”, Intracranial ce...