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Left ear cochlear implantation was performed in both the stimulated (n = 6) and non-stimulated (n = 6) groups. Serial NRT and impedance measurements began on post-operative day 7 in both groups. Electric stimulation started in the stimulated group on post-operative day 7. After post-operative day 21 and when all electrodes lost functionality (impedance > 35kOhms), cochleae were harvested for 3D x-ray microscopy and histology.
