CHAPTER VI. SOMNAMBULISM.

Causes of somnambulism--Physiology of somnambulism-- Varieties of the disorder--Maury’s classification-- Classification of Ball and Chambard--Diagrammatic representation of their classification--Somnambulic lethargy--Illustrative cases--Somnambulic dreams--Night terrors--Somnolentia or sleep-drunkenness--Sleep-walking-- Illustrative cases--Condition of the special senses in somnambulism--Relation of memory to the somnambulic paroxysm--Illustrative cases--Occasional recollection of incidents connected with the somnambulic dream-- Resemblances between the somnambulic state and the condition of post-epileptic mania--Somnambulic visions--J. P. Frank’s case--Mesnet’s case--Somnambulic life--Its likeness with the double-consciousness of certain forms of epilepsy--Illustrative cases--General theory of somnambulism. 166