Some of the major projections to inferior colliculus (IC). Excitatory projections are shown as black lines, GABAergic projections are shown as red lines and glycinergic projections as orange lines. Solid lines are projections from binaural nuclei while dashed lines are from monaural nuclei. DNLL, INLL and VNLL are the dorsal, intermediate and ventral nuclei of the lateral lemniscus, LSO is lateral superior olivary nucleus, MNTB is medial nucleus of the trapezoid body, SPN is superior paraolivary nucleus. Not all projections are shown.