similar to the Nucleus Hybrid-6 (formerly known as CI24RE Hybrid), the subject ofIDE No. 0990155. See ATTACHMENT 1 for a letter from the Sponsor ofIDE No. 0990155 authorizing the FDA to review the information in IDE No. 0990155 for purposes of the current IDE application. Like the Hybrid-6, the Iowa/Nucleus 10/ 10 mm cochlear implant is 0.2 mm x 0.4 mm in diameter and has a short, 10 mm electrode array that it is inserted only into the more basal region of the cochlea. In comparison to the Hybrid-6, the Iowa/Nucleus 10/ 10 mm cochlear implant has a total of 10 contacts, or 4 more than the 6 contacts/channels present on the Hybrid-6. The contacts are spaced closer together and occupy approximately 6 mm of the apical segment of the 10 mm array.