Links
Various companies now produce the implants and have pages dedicated to their research. Below are a couple you should check out.
Deafness
Institutes
American Academy of Otolaryngology - Head and Neck Surgery
British Cochlear Implant Group
Cochlear Implant Central (semi out-dated)
General Guides
Companies
Cochlear Implants in the Media
PBS has shown Sound and Fury, an excellent discussion of cochlear implants recently.
Other journal articles
Klotter, Jule. "Cochlear Implants" Townsend Letter for Docters and Patients. Oct 2002 p23(2)
Stone, Brad. "How to Recharge the Second Sense: New cochlear-implant technology can enhance hearing in 80 percent of patients who are deaf." Newsweek. June 24. 2002 p54
Rauschecker, J.P. and Shannon, R.V.. "Sending Sound to the brain." Science. February 8, 2002. v295 i5557 p1025
Weaver, Bill. "The Bionic Ear: we have the technology." Scientific Computing & Instrumentation. Dec 2001 v19 i1 p16