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May 1939

Klinische Untersuchungen über motorische Erscheinungen bei Psychosen und organischen Hirnkrankheiten.

Arch NeurPsych. 1939;41(5):1085-1086. doi:10.1001/archneurpsyc.1939.02270170223018

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Abstract

The author of this monograph is a student of Kleist and attempts to apply Kleist's terminology to clinical syndromes. Kleist, in his "Gehirnpathologie," listed a hierarchic arrangement of psychomotor phenomena, the scale ranging from the purely reflex decerebrate rigidity through the "myotatic reaction" to the psychokinetic and catatonic manifestations. The myotatic reaction is analogous to paralysis agitans; it is largely of a reflex character, but is occasionally accessible to "psychic" influences (paradoxic kinesis of the patient with paralysis agitans). The psychokinetic reactions are farther from the reflex and closer to the "psychic" sphere. Finally, the catatonic reaction is hardly reflex at all.

In his attempt to explain clinical phenomena by means of this fourfold terminology, the author is obliged to balance closely to avoid stumbling over the pitfalls of his overlapping and interlocking designations. The terms as such are known from Kleist's "Gehirnpathologie": the magnet reaction; the associative performance (Mitmachen

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