[Features of the reaction of the rat to intraventricular administration of the cerebrospinal fluid of patients with manic-depressive psychosis].

Following injection of liquor of patients with maniacal-depressive psychosis into the lateral ventriculi of rats brain, the testing of the animals by the method of "emotional resonance" revealed neurosis-like behaviour changes in some of them. It has been shown that the emergence and the character of these disorders are connected with individual features of the rats and do not depend on the phase of psychosis when the liquor was taken. Administration of the liquor of psychically healthy people and intact rats had no analogous effect.