Percepção da fala de usuários de implante coclear com a estratégia HiRes 120: revisão sistemática

Abstract

D espite technological advances employed in signal processing strategies, one of the remaining obstacles are spectral gap details on the information transmitted. Considering its importance in speech perception, researchers have investigated mechanisms to optimize spectral details through virtual spectral channels. The clinical application of this technique resulted in a new approach to signal processing -the HiRes 120.Objective: To assess the auditory performance of cochlear implant users with the HiRes 120 strategy. Methodology:The literature review was conducted in an electronic database, with standard bibliographic search in the year 2011, using specific keywords. In order to select and evaluate the scientific studies found in the search, we setup search containing the following aspects: type of study, subjects, intervention used and evaluation of the results. Conclusion:Scientific evidence points to an improvement in hearing performance in noisy environments with the HiRes 120 strategy, but this does not occur in quiet situations. The optimization of speech perception with this strategy is closely related to the cochlear implant user's age, to the time of sensory deprivation and the acclimatization time required to use the strategy's spectral information. Braz J Otorhinolaryngol. 2012;78(3):129-33. REVIEW ARTICLE BJORL

Escala de desenvolvimento auditivo e de linguagem na criança implantada

“…Nevertheless, if we consider the standard deviation described in Table 1, it is possible to verify that many children of the EG reached the CG results. This fact reinforces the need for constant evaluation and follow-up of cases of children with CI (12)(13)(14)(15) , in order to map the evolutions and offer subsidies for therapeutic approach.…”

Development of auditory and language skills in children using cochlear implants with two signal processing strategies

“…The auditory and language performance of CI users is closely related to factors that include age at surgery, 2 , 3 duration of sensory deprivation, 4 , 5 effective device use, 6 the hearing loss etiology, 7 , 8 , 9 the child’s cognitive skills, 10 family participation in the therapeutic process, 11 specialized speech-language therapy, 12 and the optimization of programming parameters, 13 , 14 , 15 , 16 and other factors.…”

“…However, the clinical assessment is extremely important to evaluate the post-CI results with the different signal processing strategies, since sometimes the strategy recommended by the manufacturer does not benefit all CI users in the same way. 15 , 16…”