bjects is lost as a result of organic brain disease. His final work in neurology, an article, Infantile Cerebral Paralysis, was written in 1897 for an encyclopedia, since by this time Freud was occupied largely with psychological rather than physiological explanations for mental disorder.He recorded his valuation and constructed his theories in 24 volumes published between 1888 and 1939.
             While exploring the possible psychological roots of nervous disorders, Freud spent several months in Paris, studying with Jean Charcot, a French neurologist from whom he learned hypnosis. On return to Vienna, Freud began to hypnotize patients and encouraging them while under hypnosis to speak openly about themselves and the onset of their symptoms. It was in this way that Freud discovered what he termed the "unconscious." Freud's new orientation which he named Psychoanalysis in 1896 was heralded by his collaborative work on hysteria with Viennese physician Josef Breuer. The work was presented in 1893 in a preliminary paper and two years later in
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