Result on speech perception after conversion from Spectra® to Freedom

New technology in the Freedom® speech processor for cochlear implants was developed to improve how incoming acoustic sound is processed; this applies not only for new users, but also for previous generations of cochlear implants. To identify the contribution of this technology – the Nucleus 22® – on...

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Bibliographic Details
Published in:Brazilian journal of otorhinolaryngology 2012-04, Vol.78 (2), p.11-15
Main Authors: de Matos Magalhães, Ana Tereza, Goffi-Gomez, Maria Valéria Schmidt, Hoshino, Ana Cristina, Tsuji, Robinson Koji, Bento, Ricardo Ferreira, Brito, Rubens
Format: Article
Language:English
Subjects:
Acoustic Stimulation
Adolescent
Adult
Aged
Audiometry
Auditory Threshold
Cochlear Implants
Cohort Studies
Cross-Sectional Studies
Deafness - rehabilitation
Female
Humans
Male
Middle Aged
Original
speech discrimination tests
Speech Discrimination Tests - instrumentation
Speech Discrimination Tests - statistics & numerical data
speech perception
Speech Perception - physiology
Young Adult
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Summary:New technology in the Freedom® speech processor for cochlear implants was developed to improve how incoming acoustic sound is processed; this applies not only for new users, but also for previous generations of cochlear implants. To identify the contribution of this technology – the Nucleus 22® – on speech perception tests in silence and in noise, and on audiometric thresholds. A cross-sectional cohort study was undertaken. Seventeen patients were selected. The last map based on the Spectra® was revised and optimized before starting the tests. Troubleshooting was used to identify malfunction. To identify the contribution of the Freedom® technology for the Nucleus22®, auditory thresholds and speech perception tests were performed in free field in soundproof booths. Recorded monosyllables and sentences in silence and in noise (SNR = 0dB) were presented at 60 dBSPL. The nonparametric Wilcoxon test for paired data was used to compare groups. Freedom® applied for the Nucleus22® showed a statistically significant difference in all speech perception tests and audiometric thresholds. The reedom® technology improved the performance of speech perception and audiometric thresholds of patients with Nucleus 22®.
ISSN:1808-8694
1808-8686
DOI:10.1590/S1808-86942012000200003