...a considerable number of processes projected directly dorsolaterally and occasionally laterally. We found numerous instances of collaterals arising from these axonal processes outside the SON, usually in the area dorsal and dorsolateral to the nucleus. Collator note: see Figure 4 for different courses of SO axons collaterals. The most likely recipients of these collaterals are LHA neurons, however, it is possible that NDB or RCH may receive some input from SO neurons. See Atlas levels 22 and 23, Swanson 1998.