The article seems to suggest that the SG cell is also getting regenerated. See
> The new cells contained transduction channels that relay sound signals and the ability to form connections with auditory neurons — processes essential to hearing.
> The new cells contained transduction channels that relay sound signals and the ability to form connections with auditory neurons — processes essential to hearing.
There's further questions on the models. Using Guinea pigs and mice yeild different outcomes. There's also questions on whether adult mice are better suited for hearing research.