Implantes cocleares: aspectos tecnológicos e papel socioeconômico

Tefili, Diego; Barrault, Guillaume; Ferreira, Alexandre André; Cordioli, Júlio A.; Lettnin, Djones

doi:10.4322/rbeb.2013.039

Cited by 9 publications

(8 citation statements)

References 90 publications

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“…In Brazil, the number of deaf children who have undergone cochlear implant surgery (CI) is increasing in order to acquire hearing close to normal thresholds and thus develop oral language (1)(2)(3) . This requires hearing habilitation and rehabilitation through rehabilitators to help these children and their families through the language acquisition stages (4)(5)(6) .…”

Section: Introductionmentioning

confidence: 99%

Aplicação da Escala RDLS para caracterização do perfil da linguagem oral de crianças usuárias de implante coclear

Pedrett

Costa

2019

CoDAS

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RESUMO Objetivo Analisar e caracterizar a linguagem oral de um grupo de crianças, participantes de um programa de reabilitação auditiva, usuárias de implante coclear (IC) há, no mínimo, cinco anos, com base nas habilidades de linguagem receptiva e expressiva, mensuradas por meio da Escala de Compreensão Verbal da RDLS. Método Estudo prospectivo transversal, no qual foram avaliadas seis crianças, com idade entre 8 e 11 anos, surdez profunda sensorioneural bilateral, cuja média de tempo de uso de IC foi de, no mínimo, cinco anos. Utilizou-se como instrumento a Escala RDLS, uma versão brasileira da escala americana conhecida como Reynell Developmental Language Scales (RDLS). É composto das Escalas de Compreensão e de Expressão, além das Subescalas Estrutura, Vocabulário e Conteúdo. Resultados As habilidades de nomeação apresentaram-se evidentemente melhores em comparação às habilidades que envolveram funções pragmáticas de linguagem, demonstradas nas Subescalas de Conteúdo e Estrutura, como a descrição de uma figura com elaboração de sentenças mais longas ou a organização sintática comparada à identificação de objetos, palavras e figuras. Conclusão Não houve discrepâncias significativas entre a Escala de Compreensão em relação à Escala de Expressão Verbal, no entanto nota-se que, em estruturas mais complexas, como reconhecimento de frases, os desempenhos foram mais baixos do que no reconhecimento de palavras. Tais resultados implicam possíveis implementações de programas educacionais e de reabilitação para crianças com IC.

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Section: Introductionmentioning

confidence: 99%

Aplicação da Escala RDLS para caracterização do perfil da linguagem oral de crianças usuárias de implante coclear

Pedrett

Costa

2019

CoDAS

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“…One key aspect that imposes limitations to their use is the presence of a external elements, which houses the microphones, signal processor, battery and, in the case of MEIs and CIs, the RF antenna. Besides the cosmetic aspect, patients relate that the existence of external parts of the device imposes drawbacks such as: vulnerability of the device, the possibility of detachment , to break and to be lost or stolen [ 1 , 3 ]. Further on, most devices cannot be used under water, during intense physical activities or even while the user is asleep.…”

Section: Introductionmentioning

confidence: 99%

A technical review and evaluation of implantable sensors for hearing devices

et al. 2018

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Most commercially available cochlear implants and hearing aids use microphones as sensors for capturing the external sound field. These microphones are in general located in an external element, which is also responsible for processing the sound signal. However, the presence of the external element is the cause of several problems such as discomfort, impossibility of being used during physical activities and sleeping, and social stigma. These limitations have driven studies with the goal of developing totally implantable hearing devices, and the design of an implantable sensor has been one of the main challenges to be overcome. Different designs of implantable sensors can be found in the literature and in some commercial implantable hearing aids, including different transduction mechanisms (capacitive, piezoelectric, electromagnetic, etc), configurations microphones, accelerometers, force sensor, etc) and locations (subcutaneous or middle ear). In this work, a detailed technical review of such designs is presented and a general classification is proposed. The technical characteristics of each sensors are presented and discussed in view of the main requirements for an implantable sensor for hearing devices, including sensitivity, internal noise, frequency bandwidth and energy consumption. The feasibility of implantation of each sensor is also evaluated and compared.

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“…The process of hearing loss due to the death of hair cells in the cochlea is directly linked to the process of aging, and there are reasons to suspect that CI in elderly adults may have limited results because of the degeneration of spiral ganglion cells and neural pathways leading to the cortex. Studies using neuroimaging have found an association between hearing loss and atrophy of the cerebral and temporal cortex that may result from a combination of interdependent mechanisms, for example, vascular risk factors, neurodegenerative processes affecting the peripheral auditory pathways and the cerebral cortex, social isolation, and lack of cognitive stimulation.…”

mentioning

confidence: 99%