Introduction
Physiopathological basis of coma (introductory remarks)
Nervous structures necessary for consciousness
Periodic physiological dissolution of consciousness: sleep and coma
From experimental to clinical neurophysiology
Physiopathology of nervous lesions responsible for coma
Aetiological classification of comas and of disturbances of consciousness of organic origin
Symptomatological classification of coma
Tentative anatomoclinical classification
The contrast medium enters the internal carotid, but does not reach the distal part of the carotid artery system.