[Sensory input to neurons of the motor area of the biceps in cat cortex]

Correlation between activity of cortical neurons in the biceps motor area and a conditioning movement of the contralateral forelimb was studied in chronic experiments of two male cats. In the group of neurons related to the movement sensory inputs were not found in 68.1% of neurons, in the group not related to the movement in 97.9% of neurons. 24.2% of neurons from the first group had cutaneous receptive fields on the dorsal surface of the distal part of the moving forelimb, in this group 5 neurons had inputs from the forelimb joints.