Fig. 2. Warwick's arrangement of the III cranial nerve subnuclei, illustrating the pattern of motor cells in the brain stem that sends fibers to each of the extraocular muscles in the oculomotor nuclei of the monkey. The medial rectus subnuclei has been divided into three disparate regions. The cells of the nucleus identified by Warwick represent those called “A” motor neurons by Büttner-Ennever.5 (Warwick R: Representation of the extraocular muscles in the oculomotor nuclei of the monkey. J Comp Neurol 98:449, 1953)