I think there are a few parts to what you are saying about Otonomy's choice of treatment/choice of trigger to initiate synapse restoration in the ear.
1. I think that the BNDF method of synapse restoration is not used only by Otonomy but I am pretty sure it might be used by other companies working on synaptic recovery too.
2. The lab evidence of Otonomy's pre-trial work indicates that the BDNF outcomes showed that they were quite successful at restoring a normal/required amount of synapses. Thus this is why I believe Otonomy might be using this method in their approach.
3. I feel that Otonomy believes that they can achieve a good functional gain from their treatment.
4. Regarding Spiral Ganglion Neurons, I have seen nothing on this either and maybe it is because it isn't needed.
@FGG got any info lol
?