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In addition to his original contribution to the problem of motility disorders in psychotic patients, Otto Kauders presents in this monograph a comprehensive review of the work of investigators responsible for the actual state of knowledge in this domain. The reader will find in this volume a thorough follow-up, in a necessarily condensed form, of the development of neuropsychiatric thought in regard to this problem. Wernicke, who coined the expression "psychomotor disturbances of the psychic arc-reflex," and Kleist, his closest follower as well as original investigator, represent the neurologic concept of psychomotility. In Wernicke's psychic arc-reflex, the latter does not differ fundamentally from any other primitive reflex, its passage through the psychic sphere being only an epiphenomenon. Kleist has enlarged greatly, on a descriptive level, Wernicke's work in studying the extreme polymorphism of hyperkinetic movements, in systematizing the concept of motility psychosis and in establishing the presence of typical motility
Zur Klinik und Analyse der psychomotorischen Störung.. Arch NeurPsych. 1933;30(3):701–703. doi:10.1001/archneurpsyc.1933.02240150231015