[The ontogenetic characteristics of the coordination relationships between the hemicenters of the spinal motor pacemaker in rat pups].
In experiments on rat puppies of the first month of postnatal life, under the conditions of real motor behaviour (spontaneous periodic motor activity) and the evoked motor reactions (late prolonged motor discharges), studies have been made on the development of coordination relationships between antagonists of the same extremity and between homologous muscles of the hindlimbs. In was found that irrespectively of the early onset of reciprocal excitation of antagonists, the mechanisms of this activity are not mature. Maturation of bilateral coordinations takes place at later stages. It was noted that one of the hemicenters of the spinal motor pacemaker is capable of producing rhythmic or constant activity which is not related to the pattern of the activity in the other hemicenters of the pacemaker of the same extremity or hemicenters of pacemaker of homologous extremity. Administration of DOPA causes the disturbance of coordination relationships.
Kuznetsov
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D000375:Aging / Q000187:drug effects / Q000502:physiology*; D000818:Animals; D000831:Animals, Newborn; D001683:Biological Clocks / Q000187:drug effects / Q000502:physiology*; D004295:Dihydroxyphenylalanine / Q000494:pharmacology; D004576:Electromyography / Q000187:drug effects; D005071:Evoked Potentials / Q000187:drug effects / Q000502:physiology; D006614:Hindlimb / Q000187:drug effects / Q000502:physiology; D009043:Motor Activity / Q000187:drug effects / Q000502:physiology*; D009132:Muscles / Q000187:drug effects / Q000502:physiology; D051381:Rats; D017208:Rats, Wistar; D017983:Receptors, Catecholamine / Q000187:drug effects / Q000502:physiology; D013116:Spinal Cord / Q000187:drug effects / Q000502:physiology*; D013979:Tibial Nerve / Q000187:drug effects / Q000502:physiology
D017983:Receptors, Catecholamine; D004295:Dihydroxyphenylalanine
Ontogeneticheskie osobennosti koordinatsionnykh otnosheniĭ mezhdu polutsentrami spinal'nogo motornogo generatora u krysiat.