(in an anteroposterior somatotopic arrangement), as well as corticorubral fibres (passing from the frontal lobe to the red nucleus) that accompany the corticospinal tract.

The posterior third of the posterior limb contains:
# Third-order sensory neurons passing from the posterolateral nucleus of thalamus to the postcentral gyrus (in an anteroposterior somatotopic arrangement)
# Fibers of the optic radiation,