. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. p. K. ANOKHIN 219 reticular formation (Magoun, 1952; Moruzzi, 1956, ct al.), the local limb lifting, the local conditioned motor act is cftcctcd by the pyramidal tract and has a definite cortical localization. The question is: how do both these organic components integrate in the animal's integral conditioned motor act? We endeavoured to answer this question by means of a number of variations of conditioned reflex experiments. In order to trace the very fact of the shift in the centre of the body's gr
. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. p. K. ANOKHIN 219 reticular formation (Magoun, 1952; Moruzzi, 1956, ct al.), the local limb lifting, the local conditioned motor act is cftcctcd by the pyramidal tract and has a definite cortical localization. The question is: how do both these organic components integrate in the animal's integral conditioned motor act? We endeavoured to answer this question by means of a number of variations of conditioned reflex experiments. In order to trace the very fact of the shift in the centre of the body's gravity during the stage of formation of tlie positional excitation we. Fig. 13 Stand designed with four separately recorded stages. In addition to recording the spread of positiiinal excitation this stand permits of recording the secretion of sahva and the vegetative components. designed a stand by means of which we could record the pressure exerted by each of the four limbs (Fig. 13). The experiment showed that the moment the conditioned stmiulus was applied there was a rapid and rather complex redistribution of muscular efforts, which could be easily recorded kymographically and elcctromyographically (Koryakin, 1958). It also showed that, if the conditioned motor defensive act was effected, say, by the right hinci limb, the lifting of the paw was always preceded by an uncommonly stable complex of relations in the excitations of the brain stem. Now, if both sensomotor areas of the cerebral cortex are removed, an interesting dissociation between the positional and local. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Council for International Organizations of Medical Sciences; Fessard, A. (Alfred); Delafresnaye, J. F. (Jean Francisque), 1919-. Springfield, Ill. , Thomas
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