Figure 8.
Scatter plot comparing the number of CTBP2 immunolabeled ribbons per IHC base (as a marker for inner hair cell – auditory nerve connections) to normalized Gap Inhibition. Mice had best Gap Inhibition at 12 kHz, so the region of interest 2 mm from the apex, corresponding to the 12kHz frequency regions (Viberg and Canlon, 2004) was tested for correlation with Normalized Gap Inhibition at 12 kHz, across individual mice at 22-24 months of age. Data are based on 16 of the 26 mice; 10 mice without a robust jump response at 12 kHz are not included. Correlation was weak based on a modeled linear regression/best fit analysis (Sigmaplot).