Abstract
Indicators of the activity of acetylcholinesterase (ACE), 5′-nucleotidase (NT), adenylate cyclase (AC) in the sensorimotor cortex and the neostriatum (NS) of the right and left cerebral hemispheres of control rats and rats trained to perform a food-procuring movement by pressing against an obstacle with the forelimb. An identical level of the averaged bilateral values of the activity of NT and AC in both of the structures in question and an increased ACE activity in the NS were found in the control animals. After the development of a manipulatory skill, the activity of AC decreased in the cortex and the NS in the presence of unchanged ACE activity, while NT activity decreased in the cortex and increased in the NS. The bilateral values of the activity of the enzymes differed significantly in well and poorly trained rats. At the same time, the activity of the enzymes was similar in character in the dominant and subdominant hemispheres for each group of animals. Overall the neurochemical changes obtained can be regarded as specific correlates of the developed unilateral manipulatory reactions that are characteristic for the structures in question of both cerebral hemispheres.
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Laboratory of Comparative Physiology, Laboratory of Comparative Biochemistry of the Nervous System, and Laboratory of the Evolution of Biochemical Communication Systems, I. M Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences. I. P. Pavlov Department of Physiology of the Institute of Experimental Medicine, Russian Academy of Medical Sciences, Saint Petersburg. Translated from Fiziologicheskii Zhurnal imeni I. M. Sechenova, Vol. 80, No. 1, pp. 115–120, January, 1994.
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Zhuravin, I.A., Nalivaeva, N.N., Plesneva, S.A. et al. Neurochemical characteristics of the rat neostriatum and motor cortex after the development of a unilateral manipulatory reflex. Neurosci Behav Physiol 25, 117–121 (1995). https://doi.org/10.1007/BF02358578
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DOI: https://doi.org/10.1007/BF02358578