Abstract
AbstractA study has been made of the efferent connections of the trigeminal sibnucleus caudalis in 12 shep. Lesions were placed in this nucleus either surgically or by means of an electrical cautery device. Resulting degeneration was determined by staining serially prepared frozen sections according to the silver techniques of Nauta and Fink‐Heimer. Ipsilateral connections are desribed with the fifth, seventh eleventh and twelfth cranial nerve motor nuclei, and ascending ipsilateral connections with all of the more rostral portions of the trigeminal nuclear complex. Evidence of widespread bilateral trigemino‐reticular connections is reported. By contrast, only a small number of fibers from the subnucleus caudalis were found to ascend in the mdial lemniscus; few of these lemniscal fibers appear to ascend beyond mesencephalic levels.
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