abnormal pons morphology abnormal brainstem morphology abnormal cochlear VIII nucleus morphology 2013-12-09T13:34:35Z MP:0006333 MP:0012490 MPheno.ontology abnormal cochlear nuclei morphology abnormal cochlear nucleus morphology any structural anomaly of two paired brainstem nuclei, the dorsal cochlear nucleus and the ventral cochlear nucleus, that lie dorsal and ventral, respectively, to the inferior cerebellar peduncle at the rostral pole of the medulla; the cochlear nuclei receive input from the cochlear nerve and send projections to the inferior colliculus, the medial geniculate, and other forebrain structures csmith