The Effects of Paired versus Sequential Stimulation on Speech Recognition Outcomes of Adult Cochlear Implant Recipients

Holcomb, Meredith A.; Dornhoffer, James R.; McRackan, Theodore R.

doi:10.1159/000511449

Cited by 3 publications

(1 citation statement)

References 17 publications

(29 reference statements)

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“…For all the subjects the Optima S stimulation strategy was adopted [ 4 ] and devices were fitted by the same clinical specialist (FDM) in every follow-up visit. Patients activated within 24 h from surgery were advised to use the device only a few hours a day (i.e., 2 h in the morning and 2 h in the afternoon) for the first month.…”

Section: Methodsmentioning

confidence: 99%

Early fitting in cochlear implant surgery: preliminary results

Soncini

Franzini

Marco³

et al. 2023

Eur Arch Otorhinolaryngol

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Purpose Cochlear implants are usually activated 3–5 weeks after surgery; to date, no universal protocol exists regarding switch on and fitting of these devices. The aim of the study was to assess safety and functional results of activation and fitting of cochlear implant within 24 h following surgery. Methods In this retrospective case–control study, 15 adult patients who underwent cochlear implant surgery, for a total of 20 cochlear implant procedures were analyzed. In particular, clinical safety and feasibility were investigated by examinating patients at activation and at each follow-up. Values of electrodes’ impedance and most comfortable loudness (MCL) were analyzed from the time of surgery to 12 months after activation. Free-field pure tone average (PTA) was also recorded. Results No major or minor complications were reported and all patients could perform the early fitting. Activation modality influenced impedance values only in the short term but the differences were not statistically significant (p > 0.05). Mean MCL values in the early fitting group were lower than MCL of the late fitting in all follow-up sessions, and the difference was statistically significant (p < 0.05). The mean PTA was lower in the early fitting group but the difference was not statistically significant (p < 0.05). Conclusions Early fitting of cochlear implants is safe, allows for an early rehabilitation and can have possible beneficial effects on stimulation levels and dynamic range.

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Section: Methodsmentioning

confidence: 99%

Early fitting in cochlear implant surgery: preliminary results

Soncini

Franzini

Marco³

et al. 2023

Eur Arch Otorhinolaryngol

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Artificial Intelligence-Based Hearing Loss Detection Using Acoustic Threshold and Speech Perception Level

Sankari,

Snekhalatha,

Murugappan

et al. 2023

Arab J Sci Eng

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Effects of the Number of Channels and Channel Stimulation Rate on Speech Recognition and Sound Quality Using Precurved Electrode Arrays

Berg

Chen²,

Noble

et al. 2023

Am J Audiol

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Purpose: This study investigated the relationship between the number of active electrodes, channel stimulation rate, and their interaction on speech recognition and sound quality measures while controlling for electrode placement. Cochlear implant (CI) recipients with precurved electrode arrays placed entirely within scala tympani and closer to the modiolus were hypothesized to be able to utilize more channels and possibly higher stimulation rates to achieve better speech recognition performance and sound quality ratings than recipients in previous studies. Method: Participants included seven postlingually deafened adult CI recipients with Advanced Bionics Mid-Scala electrode arrays confirmed to be entirely within scala tympani using postoperative computerized tomography. Twelve conditions were tested using four, eight, 12, and 16 electrodes and channel stimulation rates of 600 pulse per second (pps), 1,200 pps, and each participant's maximum allowable rate (1,245–4,800 pps). Measures of speech recognition and sound quality were acutely assessed. Results: For the effect of channels, results showed no significant improvements beyond eight channels for all measures. For the effect of channel stimulation rate, results showed no significant improvements with higher rates, suggesting that 600 pps was sufficient for maximum speech recognition performance and sound quality ratings. However, across all conditions, there was a significant relationship between mean electrode-to-modiolus distance and all measures, suggesting that a lower mean electrode-to-modiolus distance was correlated with higher speech recognition scores and sound quality ratings. Conclusion: These findings suggest that even well-placed precurved electrode array recipients may not be able to take advantage of more than eight channels or higher channel stimulation rates (> 600 pps), but that closer electrode array placement to the modiolus correlates with better outcomes for these recipients.

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The Effects of Paired versus Sequential Stimulation on Speech Recognition Outcomes of Adult Cochlear Implant Recipients

Cited by 3 publications

References 17 publications

Early fitting in cochlear implant surgery: preliminary results

Early fitting in cochlear implant surgery: preliminary results

Artificial Intelligence-Based Hearing Loss Detection Using Acoustic Threshold and Speech Perception Level

Effects of the Number of Channels and Channel Stimulation Rate on Speech Recognition and Sound Quality Using Precurved Electrode Arrays

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