The goal of this study is to study the adaptation process in newly implanted Single-Sided Deaf Cochlear Implant (SSD-CI) users. Subjects will use four frequency maps for the first month after CI activation. One of these maps will be standard of care and the other three will have higher low frequency edges than the standard of care default maps. These maps will alternate daily during the first month (with exceptions made for situations when the subject is allowed to use a preferred map rather than the map predetermined for use that day), and after that point each subject will make a selection at the beginning of the week to compare all four maps and decide which one to use at the beginning of the following week. The goal of this study is to investigate how reducing place-pitch mismatch in SSD CI users affects 1) sound quality, 2) device use, and 3) speech perception.
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Bilateral speech perception as measured by Bamford-Kowal-Bench (BKB-SIN) speech-in-noise score while using standard 188 Hz Frequency-Allocation Table (FAT)
Timeframe: Baseline
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using standard 188 Hz FAT
Timeframe: 1 month post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using standard 188 Hz FAT
Timeframe: 3 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using standard 188 Hz FAT
Timeframe: 6 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using standard 188 Hz FAT
Timeframe: 12 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 313 Hz FAT
Timeframe: Baseline
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 313 Hz FAT
Timeframe: 1 month post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 313 Hz FAT
Timeframe: 3 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 313 Hz FAT
Timeframe: 6 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 313 Hz FAT
Timeframe: 12 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 438 Hz FAT
Timeframe: Baseline
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 438 Hz FAT
Timeframe: 1 month post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 438 Hz FAT
Timeframe: 3 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 438 Hz FAT
Timeframe: 6 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 438 Hz FAT
Timeframe: 12 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 563 Hz FAT
Timeframe: Baseline
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 563 Hz FAT
Timeframe: 1 month post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 563 Hz FAT
Timeframe: 3 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 563 Hz FAT
Timeframe: 6 months post activation of implant
Bilateral speech perception as measured by BKB-SIN speech-in-noise score while using experimental 563 Hz FAT
Timeframe: 12 months post activation of implant
Cochlear Implant (CI)-only speech perception as measured by the consonant-nucleus-consonant (CNC) word list score while using standard 188 Hz FAT
Timeframe: Baseline
CI-only speech perception as measured by the CNC word list score while using standard 188 Hz FAT
Timeframe: 1 month post activation of implant
CI-only speech perception as measured by the CNC word list score while using standard 188 Hz FAT
Timeframe: 3 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using standard 188 Hz FAT
Timeframe: 6 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using standard 188 Hz FAT
Timeframe: 12 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 313 Hz FAT
Timeframe: Baseline
CI-only speech perception as measured by the CNC word list score while using experimental 313 Hz FAT
Timeframe: 1 month post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 313 Hz FAT
Timeframe: 3 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 313 Hz FAT
Timeframe: 6 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 313 Hz FAT
Timeframe: 12 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 438 Hz FAT
Timeframe: Baseline
CI-only speech perception as measured by the CNC word list score while using experimental 438 Hz FAT
Timeframe: 1 month post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 438 Hz FAT
Timeframe: 3 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 438 Hz FAT
Timeframe: 6 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 438 Hz FAT
Timeframe: 12 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 563 Hz FAT
Timeframe: Baseline
CI-only speech perception as measured by the CNC word list score while using experimental 563 Hz FAT
Timeframe: 1 month post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 563 Hz FAT
Timeframe: 3 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 563 Hz FAT
Timeframe: 6 months post activation of implant
CI-only speech perception as measured by the CNC word list score while using experimental 563 Hz FAT
Timeframe: 12 months post activation of implant