Figure 4.
Photomicrographs of the feline oculomotor (III) region. Note that the ChAT-positive motoneurons of EWpg do not form a discrete nucleus in the cat (D–F), and are instead scattered dorsal, rostral and ventral to somatic motoneurons in III. The Ucn1-positive EWcp neurons do form a discrete nucleus dorsal to III that extends as a paired column at the most rostral levels (AC). As shown in the Nissl sections (G–I), this nucleus was formerly termed EW. However a few neurons are scattered in the supraoculomotor area (SOA) and amongst the myelinated bundles lateral to III. Scale bar: 1mm.