FIG. 3.

SGN densities for four comparison and control groups: normal animals (stars); animals implanted in a hearing ear (circles); animals deafened with neomycin prior to implantation (inverted triangles) and animals deafened with neomycin and treated with AAV.empty prior to implantation (upright triangles). SGN densities in profiles A–C are shown for each individual. Ears with greater than 80 % inner hair cell survival in the specified profile are indicated by filled red symbols. Symbols with orange fill indicate IHC survival between 1 and 79 %, and open symbols indicate that no IHC were found in the specified profile. For each group, bars indicate the mean for the specified profile and error bars extended to ±2 SD of that mean. Data for the two deafened groups were not significantly different, so these two groups were combined to form a “deafened-control” group for further analysis.