Figure 12.

Distribution of rabies-positive premotor neurons labeled 76 hours after an injection into the left ciliary body. The cells that are just rabies-positive (green diamonds), just choline acetyltransferase (ChAT)-positive (red dots), and double labeled (blue squares) are found rostral to the oculomotor nucleus (A, B), in the supraoculomotor area (SOA) above the oculomotor nucleus (III) (C–J), and at the level of the caudal central subdivision (CC) (H–J). The ChAT-positive, rabies-negative motoneurons (red dots) are located bilaterally in the preganglionic Edinger-Westphal nucleus (EWpg) and in the C-group (C) (E–G). The ChAT-positive, rabies-positive preganglionic motoneurons (blue squares) are found in the ipsilateral EWpg. Rabies-positive, ChAT-negative premotor neurons (green diamonds) are present bilaterally. While they were present throughout the entire region (A–J), they are particularly prominent caudally (J), where they form a band in SOA.