Development of Swallowing-Movement-Sensing Device and Swallowing-State-Estimation System

Kurihara, Yosuke; Kaburagi, Takashi; Kumagai, Shinya; Matsumoto, Toshiyuki

doi:10.1109/jsen.2019.2894744

Cited by 7 publications

(13 citation statements)

References 69 publications

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“…Screening on the full texts further excluded 40 articles with reasons including evaluation of non-healthy patients, such as dysphagia, stroke, aspiration, Parkinson's disease (n = 28); evaluation not on Human subjects; not conducting instrument evaluation or not including any accuracy-related outcome measures (n = 9); not direct to swallowing assessment, such as food intake, and chewing (n = 2). Eventually, there were 11 articles eligible for the review [30][31][32][33][34][35][36][37][38][39][40]. It shall be noted that three articles came from the same research team [33,37,38], whilst two other articles were also presented by another research team [36,39].…”

Section: Search Resultsmentioning

confidence: 99%

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Swallow Detection with Acoustics and Accelerometric-Based Wearable Technology: A Scoping Review

Chan

Liu

et al. 2022

IJERPH

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Swallowing disorders, especially dysphagia, might lead to malnutrition and dehydration and could potentially lead to fatal aspiration. Benchmark swallowing assessments, such as videofluoroscopy or endoscopy, are expensive and invasive. Wearable technologies using acoustics and accelerometric sensors could offer opportunities for accessible and home-based long-term assessment. Identifying valid swallow events is the first step before enabling the technology for clinical applications. The objective of this review is to summarize the evidence of using acoustics-based and accelerometric-based wearable technology for swallow detection, in addition to their configurations, modeling, and assessment protocols. Two authors independently searched electronic databases, including PubMed, Web of Science, and CINAHL. Eleven (n = 11) articles were eligible for review. In addition to swallowing events, non-swallowing events were also recognized by dry (saliva) swallowing, reading, yawning, etc., while some attempted to classify the types of swallowed foods. Only about half of the studies reported that the device attained an accuracy level of >90%, while a few studies reported poor performance with an accuracy of <60%. The reviewed articles were at high risk of bias because of the small sample size and imbalanced class size problem. There was high heterogeneity in assessment protocol that calls for standardization for swallowing, dry-swallowing and non-swallowing tasks. There is a need to improve the current wearable technology and the credibility of relevant research for accurate swallowing detection before translating into clinical screening for dysphagia and other swallowing disorders.

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Section: Search Resultsmentioning

confidence: 99%

“…Among the 11 eligible articles, five of them utilized only acoustics (microphone) [32][33][34][35]40], one utilized only accelerometers in the instrument [39], and five applied a multimodal system [30,31,[36][37][38]. However, two articles on multimodal systems did not fully describe the modalities other than acoustics [30,37].…”

Section: Instrument Configurationmentioning

confidence: 99%

Swallow Detection with Acoustics and Accelerometric-Based Wearable Technology: A Scoping Review

Chan

Liu

et al. 2022

IJERPH

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“…Quando analisadas as variações dos resultados obtidos em relação às características do alimento ingerido, pôde-se verificar, nos estudos, que a laringe desempenha movimentos complexos para deglutições de bolos alimentares de maior viscosidade (38) ; o uso combinado de sensor de emissão acústica e gráficos de distribuição de probabilidade (gráficos Q-Q) permite distinguir diferenças de viscosidades (26) ; as medidas de amplitude de pico e a energia diminuem significativamente com a viscosidade do bolo alimentar, o intervalo de tempo, pico a pico, e a duração aumentam com o volume do bolo (49) ; o padrão acústico da deglutição se modifica em relação à consistência e volume do bolo alimentar com o passar dos anos, sendo que, nos idosos, apresenta uma curva com menor amplitude e maior tempo do que nos adultos (13) .…”

Section: Instrumentos De Captação Dos Sinais De Ausculta Cervicalunclassified

“…Para análise quanto às características do alimento, foram utilizados os seguintes instrumentos: microfone condensador de eletreto bidirecional (38) ; microfone condensador de garganta e sensor de emissão acústica (26) ; sensor Doppler e microfone condensador de eletreto omnidirecional (49) ; sensor Doppler (13) . Observou-se uma grande diversidade metodológica nos estudos analisados.…”

Section: Instrumentos De Captação Dos Sinais De Ausculta Cervicalunclassified

Instrumentos para captação e análise acústica dos sinais de ausculta cervical na prática clínica fonoaudiológica: uma revisão integrativa de literatura

Dias

Bolzan

2021

Audiol., Commun. Res.

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RESUMO Objetivo Descrever os instrumentos utilizados para captação e análise acústica dos sinais de ausculta cervical e identificar aqueles com maior potencial para aplicação na clínica fonoaudiológica. Estratégia de pesquisa Trata-se de uma revisão integrativa de literatura. As buscas foram realizadas nas bases de dados MEDLINE/PubMed, Scopus e Web of Science, a partir da combinação de termos de relevância e operadores booleanos, durante o mês de novembro de 2020. Critérios de seleção Artigos científicos publicados nos idiomas português, espanhol ou inglês, nos últimos cinco anos (2016-2020) e que apresentassem estudo da ausculta cervical. Resultados Foram encontrados 98 artigos. Após a aplicação dos critérios de seleção, 26 artigos foram selecionados para esta revisão. Para captação dos sinais de ausculta cervical, o microfone foi o instrumento mais utilizado, seguido pela técnica de ausculta cervical de alta resolução, que combina sinais acústicos e vibratórios registrados por um microfone e um acelerômetro, respectivamente. Softwares e/ou algoritmos foram selecionados para análise acústica dos sinais, de acordo com o objetivo de cada estudo. Conclusão O método de ausculta cervical de alta resolução e a análise acústica por meio de algoritmos de aprendizado de máquina apresentaram grande potencial para utilização na prática clínica fonoaudiológica para avaliação e monitoramento da deglutição.

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“…Previous research presented the non-invasive measurement of the swallowing function with developed sensors or sensor-based monitoring during the swallowing events [ 24 , 25 , 26 , 27 , 28 , 29 ]. In this study, the proposed sensor was developed by the near-field electrospinning technique.…”

Section: Introductionmentioning

confidence: 99%

Development of Piezoelectric Silk Sensors Doped with Graphene for Biosensing by Near-Field Electrospinning

Lee

Lin

Hoe

et al. 2022

Sensors

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A novel piezoelectric fiber sensor based on polyvinylidene fluoride piezoelectric (PVDF) doped with graphene is presented. The near-field electrospinning technology was used for developing the sensor. The uniform experimental design method was introduced to determine the ranges of experimental parameters, including the applied voltage, the drum speed range, the graphene doping ratios from 0% to 11 wt% in PVDF solution, and the electrode gap. By experimental results, the conductivities of PVDF solutions with different doping ratios of graphene increased from 19.6 μS/cm to 115.8 μS/cm. Tapping tests were performed to measure the voltages and currents produced by the piezoelectric fibers. The maximum output voltage was 4.56 V at 5 wt% graphene doping ratio in PVDF fibers, which was 11.54 times that of the pure PVDF sensors. Moreover, mechanical properties of the proposed sensor were measured. Motion intention and swallowing test, such as saliva-swallowing and eating, were carried out. When the subject spoke normally, the output voltage of the sensor was between 0.2 and 0.4 V, approximately. Furthermore, when the subject drank water and ate food, the output voltage of the sensor was between 0.5 and 1 V, approximately. The proposed sensor could be used to detect signals of the human body and serve as a wearable device, allowing for more diagnosis and medical treatment.

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Development of Swallowing-Movement-Sensing Device and Swallowing-State-Estimation System

Cited by 7 publications

References 69 publications

Swallow Detection with Acoustics and Accelerometric-Based Wearable Technology: A Scoping Review

Swallow Detection with Acoustics and Accelerometric-Based Wearable Technology: A Scoping Review

Instrumentos para captação e análise acústica dos sinais de ausculta cervical na prática clínica fonoaudiológica: uma revisão integrativa de literatura

Development of Piezoelectric Silk Sensors Doped with Graphene for Biosensing by Near-Field Electrospinning

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