abnormal pons morphology abnormal brainstem morphology abnormal cochlear VIII nucleus morphology MP:0006333 abnormal cochlear nuclei morphology MP:0012490 2013-12-09T13:34:35Z csmith 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 MPheno.ontology