Figure 8: Schematic representation of the efferent innervation of the organ of Corti. Myelinated mediale olivocochlear fibres (MOC) form synaptic contacts with outer hair cells (OHC). Non-myelinated lateral olivocochlear fibres (LOC) form synaptic contacts with afferent type I spiral ganglion neurons (type I SGN), which lead to the inner hair cells (IHC). Key to arrows: right-facing = efferent, left-facing = afferent, (Figure modified after Guinan [109]).