[Rearrangement of efferent activity of a locomotor generator controlling forelimb movements during electric stimulation of descending systems]

Data on reorganization of the efferent activity parameters of the forelimb locomotor generators during electrical stimulation of the descending systems were obtained during experiments on immobilized decerebrate cats. It has been found that a generator controlling the forelimb locomotor movement is characterized by existence of such a stable state when total influence of different descending systems on this generator is extremely limited. A conclusion is made that the sense of the activity reorganization in the locomotor generator of a forelimb under the effect of signals from descending systems brings the motor program to such a dynamic relation with a supraspinal inflow which provides sufficiently limitation and balancing of the influences of corresponding descending systems on the interneuronal nets, determining time and phase characteristics of the activity of these generators.