Summary
Alterations of conditioned reflexes which we studied takes place in dogs after 3–4 combinations. In the neurosis which appears, the stimulus, which was formerly differential, enhances the disorder of the heart activity while the one that was formerly positive normalizes it.
Neurosis is maintained only for 14–17 days if the animals are removed from the room where experiments of alteration of reflexes were conducted. One 3-year-old dog completely recovered from neurosis in a fortnight.
The environment in which alteration of reflexes took place maintained disturbances of the heart activity for 5 months in a 9 year old dog, without administration of additional stimulation.
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Sapov, I.A. Reflex effects on the heart from the proprioceptors. Bull Exp Biol Med 44, 1287–1291 (1957). https://doi.org/10.1007/BF00830616
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DOI: https://doi.org/10.1007/BF00830616