With regard to its spinal motor functions, the reticular formation in the brainstem is primarily concerned with which of the following functions?
Rapid compensatory (feedback) responses to postural instabilities detected by the vestibular labyrinth.
Postural adjustments mediated by direct synaptic connection onto on alpha motor neurons within the lateral aspect of the ventral horn.
Postural adjustments mediated by descending projections within the lateral column of white matter in the spinal cord.
Fractionation of digit movements during skilled manual behaviors.
Modulations of the gain of segmental reflexes in the spinal cord.