Elsevier Inc. PIP2 auditory perception processing Slc17a8 ribbon synapse amplification outer hair cell (OHC) - three rows K+ Ca2+ glutamate superior olivary complex Otof various, non-sensory, supporting cell outer hair cell (OHC) - three rows --+> SGN type II Myo7a ---- Ush1c Espn ---- Myo3a Myo1c MET channel Espn Myo3a Pcdh15 ---- Ush1c Cdh23 ---- Pcdh15 Cdh23 ---- Ush1c Dfnb31 Myo15a Cdh23 Pcdh15 Gpr98 Myo1c ---- PIP2 Pls1 Actb Pls3 Ush2a central nervous system SGN type I ribbon synapse --+> SGN type I SGN type II superior olivary complex ---| outer hair cell (OHC) - three rows Myo6 Myo6 ---- Otof Ptprq Ush1c Ush1c ---- Ush1g Ush1g Myo7a Myo7a ---- Ush1g Cdh23 ---- Myo1c Actg1