Clinical Evaluation of Frequency Allocation for Bimodal CI Users
This study will examine experienced, bimodal cochlear implant (CI) patients who receive an alternative frequency allocation table (FAT) to determine how it improves sound quality, device satisfaction, and speech perception abilities with respect to the standard default FAT. The goal of this study is to investigate how improving place-pitch mismatch in bimodal CI users affects 1) sound quality, 2) satisfaction, and 3) speech perception.
• Age 18 or older
• Regular usage of a cochlear implant device with at least 18 active electrodes, and compliance with programming/appointments
• Received a cochlear implant at least 6 months ago and use a hearing aid in the contralateral ear
• Pure tone average (.5, 1, and 2kHz) between 30 and 70 dB (decibel) hearing level in the contralateral (hearing aid) ear
• Standard FAT use for all programs prior to study participation
• No known anatomical abnormalities in either ear
• English speaking
• No known cognitive impairments
• At least 25% of subjects should use the Cochlear EA32 electrode