part of medial geniculate nucleus dorsal nucleus of medial geniculate body BTO:0002673 BrendaTissueOBO The larger, dorsal part of the medial geniculate nucleus, receiving ascending auditory fibers from the inferior colliculus as well as afferent projections from some nonauditory areas of the brain stem, and projecting to the auditory cortex. nucleus dorsalis coporis geniculati medialis