Restructuring of the efferent activity of the scratching generator due to cyclic shifting of the position of the hindlimb in the decerebrate immobilized cat

The influence of the afferent inflow conditioned by passive cyclic movement of the ipsilateral hindlimb tip along a trajectory near to that of real scratching on the scratching generator activity was studied in decerebrated immobilized cat. This inflow caused significant rebuilding of the scratching generator efferent activity aimed to bring efferent activity into a definite phase correlation with the afferent inflow. Synchronization of fictitious scratching with passive moving occurred at the first movement cycle, the phase correlation between them being contrary to that of real scratching.