Cochlear inner and outer hair cells receive afferent innervation from type I and type II spiral ganglion neurons, respectively. Defourny et al. find that, in the absence of ephrin-A5 and its receptor EphA4, a subset of type I spiral ganglion neuron projections invade the outer hair cell area.
- Jean Defourny
- Anne-Lise Poirrier
- Brigitte Malgrange