obsolete cochlear inner hair cell efferent innervation pattern trait true cochlear IHC efferent innervation OBSOLETE. Any measurable or observable characteristic related to the arrangement, distribution or supply of nerve fibers to the normally dense plexus of efferent terminals that contact radial fibers of the spiral ganglion below cochlear IHCs or of the sparser plexus of terminals positioned around IHC somata; normally, lateral olivocochlear neurons, which are found in and/or around the lateral superior olive, project mainly to the ipsilateral cochlea and terminate mostly on dendritic fibers below IHCs. consider: VT:0010157, VT:0010186 VT:0000896 Trait.ontology