Evaluation of normal swallowing functions by using dynamic high-density surface electromyography maps

Abstract

BackgroundSwallowing is a continuous process with substantive interdependencies among different muscles, and it plays a significant role in our daily life. The aim of this study was to propose a novel technique based on high-density surface electromyography (HD sEMG) for the evaluation of normal swallowing functions.MethodsA total of 96 electrodes were placed on the front neck to acquire myoelectric signals from 12 healthy subjects while they were performing different swallowing tasks. HD sEMG energy maps were constructed based on the root mean square values to visualize muscular activities during swallowing. The effects of different volumes, viscosities, and head postures on the normal swallowing process were systemically investigated by using the energy maps.ResultsThe results showed that the HD sEMG energy maps could provide detailed spatial and temporal properties of the muscle electrical activity, and visualize the muscle contractions that closely related to the swallowing function. The energy maps also showed that the swallowing time and effort was also explicitly affected by the volume and viscosity of the bolus. The concentration of the muscular activities shifted to the opposite side when the subjects turned their head to either side.ConclusionsThe proposed method could provide an alternative method to physiologically evaluate the dynamic characteristics of normal swallowing and had the advantage of providing a full picture of how different muscle activities cooperate in time and location. The findings from this study suggested that the HD sEMG technique might be a useful tool for fast screening and objective assessment of swallowing disorders or dysphagia.

Os efeitos da bandagem elástica no músculo trapézio em adultos saudáveis

“…The descending fiber of the trapezius muscle was chosen because it was related to the biomechanical alignment of the face and neck and, therefore, it contributes to the various functions of the stomatognathic and respiratory systems (14,15,25) .…”

“…The tape was bilaterally applied on the descending fibers of the trapezius muscle. This muscle was chosen because of its relationship with the biomechanical alignment of the face and neck, which contributes to the various functions of the stomatognathic system and respiration (14,15) .…”

Patrones de Deglución y Metodología de Evaluación. Una Revisión de la Literatura

“…Respecto a las técnicas electromiográficas se han descrito diferentes metodologías de evaluación que, a diferencia de los otros estudios reportados anteriormente, examinan otras estructuras musculares. Zhu et al (2017) analizaron el proceso de deglución en adultos sanos a través de electromiografía de superficie de alta densidad utilizando 96 electrodos ubicados en la región frontal del cuello, se realizaron diferentes pruebas de deglución tanto de líquidos como semisólidos. Por otro lado, Vaiman et al (2004a,b) mediante la electromiografía de superficie analizó grupos musculares definidos utilizando 8 electrodos, las pruebas de deglución se realizaron con saliva y agua en diferentes volúmenes.…”

“…Por otro lado, Vaiman et al (2004a,b) mediante la electromiografía de superficie analizó grupos musculares definidos utilizando 8 electrodos, las pruebas de deglución se realizaron con saliva y agua en diferentes volúmenes. Ambos autores concluyen que los métodos propuestos evalúan fisiológicamente las características dinámicas de la deglución (Vaiman et al, 2004a,b;Zhu et al) No obstante, ambos estudios utilizaron metodologías distintas para llevar a cabo el mismo análisis, por lo que sería apropiado generar estudios que comparen la técnica gold estándar con la EMG, para cuantificar validez, sensibilidad y eficacia de las metodologías propuesta.…”

Electrically compensated, tattoo-like electrodes for epidermal electrophysiology at scale

“…Moreover, using multiple gel electrodes for multichannel electrophysiology involves multiple lead wires and snap buttons ( fig. S1A) (2), which substantially compromises the comfort, mobility, and signal quality under motion (3). As a result, many dry electrodes have been developed over the years including rigid boxes with metallic pads (e.g., Delsys Trigno Avanti wearable EMG system), metal films on plastics (4), carbon composites (5), and conductive fabrics (6).…”