The present study evaluates the effect of anatomy-based fitting on speech perception in noise and music perception in newly implanted single-sided deaf (SSD) CI recipients. Speech perception in noise will be assessed using different spatial configurations of speech and noise. Music perception will be evaluated using objective measurements for melody, harmony, timbre and pitch and using a subjective questionnaire, the Music and Cochlear implant questionnaire (MCIQ). Furthermore, localization and self-reported hearing benefit (HISQUI19, SSQ12) will be assessed.
Age ≥ 18 years
Post-lingual onset of unilateral severe-to-profound sensorineural hearing loss
Contralateral hearing < 30 dB HL (PTA measured at 500Hz, 1kHz, 2kHz en 4 kHz)
Post-operative Computed Tomography (CT) scan of the CI elec-trode available
Lack of compliance with any inclusion criteria
Implanted with C40+, C40X and C40C
Implanted with an ABI or Split electrode array
Anything that, in the opinion of the Investigator, would place the subject at increased risk or preclude the subject's full compliance with or completion of the study
Parallel
Anatomy-based fitting
DeviceAnatomy-based programming of the speech processor of the cochlear implant
Default fitting
DeviceDefault programming of the speech processor of the cochlear implant according to standard clinical practice
Speech perception in noise
Speech reception threshold in dB SNR for the following spatial configurations: S0N0, S0NSSD and SSSDNNH, measured with and without the cochlear implant
Speech perception in noise
Speech reception threshold in dB SNR for the following spatial configurations: S0N0, S0NSSD and SSSDNNH, measured with and without the cochlear implant
Speech perception in noise
Speech reception threshold in dB SNR for the following spatial configurations: S0N0, S0NSSD and SSSDNNH, measured with and without the cochlear implant
Pitch ranking
Frequency difference in semitones between CI and NH
Pitch ranking
Frequency difference in semitones between CI and NH
Pitch ranking
Frequency difference in semitones between CI and NH
Perception of timbre
Score on Visual Analog Scale (VAS). Patients have to rate the timbre on a visual analog scale (VAS) ranging from 0 to 10, with a score of 5 indicating a similar timbre between CI and NH.
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