The Benefit of Bilateral Versus Unilateral Cochlear Implantation to Speech Intelligibility in Noise Culling, John F.; Jelfs, Sam; Talbert, Alice; More Culling, John F.; Jelfs, Sam; Talbert, Alice; Grange, Jacques A.; Backhouse, Steven S. Less Ear and Hearing. 33(6):673-682, November/December 2012. Abstract Abstract In Brief In Brief Favorites PDF Get Content & Permissions Abstract: In Brief: A combination of modeling and measurement was used to explore the maximum potential benefit of a second cochlear implant (CI) for spatial release from masking. The optimal spatial configuration was selected using the model and used to design an experiment using unilateral CI users. Both model and experiment concurred that the maximum benefit should be around 18 dB. This figure can be compared with the 4 to10 dB benefits that have been reported up to now. It is argued that benefits of the order of 10 dB are typical of many situations, and that both interaural differences in the effectiveness of CIs and room reverberations have only a minor impact on this conclusion.