Number of inner hair cell ribbons in no-tinnitus and tinnitus animals.

Average number of ribbons counted in IHCs of indicated cochlear turns from 3–5 animals (corresponding to animals measured in A) from 3 independent experiments. Statistics in brackets indicate differences in comparison to control, P indicates differences between no-tinnitus and tinnitus animals (n.s.: not significant, *: p<0.05, **: p<0.01, ***: p<0.001).