Injections of 3H-leucine in the hypothalamus demonstrated that: The anterior hypothalamic area sent many fibers through the medial forebrain bundle (MFB) to terminate in the ventral tegmental area of Tsai (VTA), the rostral raphe nuclei, the Nucleus Edinger-Westphal, the dorsal part of the substantia nigra, the periaqueductal gray (PAG), and the interpeduncular nuclei. 
A definite Nucleus Edinger-Westphal could not be recognized.
The distribution of labeled neurons in the nucleus parabrachialis, nucleus tegmentolaterodorsalis, nucleus Kölliker-Fuse, Nucleus Edinger-Westphal, and the hypothalamic nuclear complex confirmed that of previous reports in rats.
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