Conscious control of action involves the voluntary initiation and the conti
nuous adjustment of motor activity. Neuroimaging data provide evidence that
the plan for a movement is developed with respect to the behavioral contex
t in prefrontal cortex, while the synergies of a motor program are coded by
premotor cortex and the specific movement parameters by the motor cortex.
It is suggested that the initiational aspects of conscious motor activity a
re implemented in a medial system of information flow and the integrative a
spects in a lateral system of the human frontal lobe.