Oral vs. pharyngeal dysphagia: surface electromyography randomized study

Vaiman, Michael; Nahlieli, Oded

doi:10.1186/1472-6815-9-3

Cited by 9 publications

(5 citation statements)

References 21 publications

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“…We believe that such choice of the epoch duration is one of the reasons that our recognition rate is substantially higher than per epoch accuracy of 70% reported in [23] where the authors used a 0.25s epoch which cannot cover a complete swallow. Although our study excluded dysphagic subjects, we may anticipate that recognition of longer-than-normal dysphagic swallows [36] may benefit from a longer epoch.…”

Section: Discussionmentioning

confidence: 99%

Automatic Detection of Swallowing Events by Acoustical Means for Applications of Monitoring of Ingestive Behavior

Sazonov

Makeyev

Schuckers

et al. 2010

IEEE Trans. Biomed. Eng.

138

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Our understanding of etiology of obesity and overweight is incomplete due to lack of objective and accurate methods for Monitoring of Ingestive Behavior (MIB) in the free living population. Our research has shown that frequency of swallowing may serve as a predictor for detecting food intake, differentiating liquids and solids, and estimating ingested mass. This paper proposes and compares two methods of acoustical swallowing detection from sounds contaminated by motion artifacts, speech and external noise. Methods based on mel-scale Fourier spectrum, wavelet packets, and support vector machines are studied considering the effects of epoch size, level of decomposition and lagging on classification accuracy. The methodology was tested on a large dataset (64.5 hours with a total of 9,966 swallows) collected from 20 human subjects with various degrees of adiposity. Average weighted epoch recognition accuracy for intra-visit individual models was 96.8% which resulted in 84.7% average weighted accuracy in detection of swallowing events. These results suggest high efficiency of the proposed methodology in separation of swallowing sounds from artifacts that originate from respiration, intrinsic speech, head movements, food ingestion, and ambient noise. The recognition accuracy was not related to body mass index, suggesting that the methodology is suitable for obese individuals. Index Terms NIH-PA Author ManuscriptNIH-PA Author Manuscript NIH-PA Author Manuscript I IntroductionThe world is still losing in the battle with the obesity epidemic. According to WHO, in 2005 there were approximately 1.6 billion overweight and at least 400 million obese adults worldwide [1]. Current trends are unsettling: 2015 projections predict 2.3 billion overweight and 700 million obese adults worldwide. Obesity is one of the risk factors for development of chronic diseases and presents a serious health problem. A recent study [2] suggested that effects of obesity on global health may be comparable to those of cancer. Though the etiology of obesity is a topic of ongoing scientific debate, regulation of food intake may be an important factor for maintaining a healthy weight [3] in the environment that provides abundance of inexpensive, highly palatable and energy dense foods, while requiring only minimal levels of physical activity [4].While various methods have been developed for accurate and objective characterization of physical activity [5], at the present time, there is no accurate, inexpensive, non-intrusive way for objective Monitoring of Ingestive Behavior (MIB) in free living conditions. The most precise method of measuring energy intake is the Doubly-Labeled Water (DLW) technique which provides accurate estimates of caloric energy intake over long periods of time (10-14 days), if subjects remain weight stable. However, the DLW technique cannot identify daily intake patterns. Dietary self-report methods like food frequency questionnaires [6], selfreported diet diaries [7], and multimedia diaries [8] have been shown to be ...

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Section: Discussionmentioning

confidence: 99%

Automatic Detection of Swallowing Events by Acoustical Means for Applications of Monitoring of Ingestive Behavior

Sazonov

Makeyev

Schuckers

et al. 2010

IEEE Trans. Biomed. Eng.

138

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“…sEMG signals were recorded using multiple channels of the VikingQuest Systems (VikingQuest EMG and Master Software V8.1 or newer, 2005; Nicolet VIASYS Healthcare, Madison, WI). The inter-electrical distance of the electrodes was not less than 10 mm, [ 11 , 19 , 21 ] and placed by a senior experienced physician.…”

Section: Methodsmentioning

confidence: 99%

Electromyographic study assessing swallowing function in subacute stroke patients with respiratory muscle weakness

et al. 2021

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Background: Dysphagia has been reported to be associated with the descent of the hyolaryngeal complex. Further, suprahyoid muscles play a greater role than infrahyoid muscles in elevation of the hyolarngeal complex. Respiratory muscle training (RMT) can improve lung function, and expiratory muscle strength training can facilitate elevation of the hyoid bone and increase the motor unit recruitment of submental muscles during normal swallowing. This study aimed to investigate the surface electromyography (sEMG) of the swallowing muscles, bilaterally, and the effect of RMT on swallowing muscles in stroke patients with respiratory muscle weakness. Methods: Forty patients with first episode of unilateral stroke were included in this retrospective controlled trial. After exclusion of 11 patients with respiratory muscle strength stronger than 70% of the predicted value, 15 were allocated to the RMT group and 14 to the control group. However, eventually, 11 patients in RMT group and 11 patients in control group completed the study. The sEMG of the orbicularis oris, masseter, submental, and infrahyoid muscles were recorded during dry swallowing, water swallowing (2 mL), and forced exhalation against a threshold breathing trainer set at different intensities, at baseline and after 6-week RMT. Results: Regarding the sEMG of submental muscles, there were significant between-group differences on the latency of the unaffected side ( P = .048), significant change from baseline force on the unaffected side ( P = .035), and significant between-side difference ( P = .011) in the RMT group during dry swallowing. Significant change in the duration from baseline was observed on the affected side of the RMT group when blowing was set at 50% maximal expiratory pressure (MEP; P = .015), and on the unaffected side of the control group when blowing set at 15% MEP ( P = .005). Significant difference was observed in the duration between 50% MEP and 15% MEP after 6-week program in the control group ( P = .049). Conclusions: A 6-week RMT can improve the electric signal of the affected swallowing muscles with more effect on the unaffected side than on the affected side during dry swallowing. Furthermore, RMT with 50% MEP rather than 15% MEP can facilitate greater submental muscle activity on the affected side in stroke patients with respiratory muscle weakness.

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“…Vaiman and colleagues, a team heavily involved in sEMG research, use another option: the Sys/3 4-channel computer-based EMG system from NeuroDyne Medical [7]. Although this system is likely more cost-effective than the aforementioned options, it remains complicated such that the typical SLP may not be able to set up this equipment easily and without the aid of qualified personnel.…”

Section: Review Of Existing Semg Technologiesmentioning

confidence: 96%

Mobili-T: A Mobile Swallowing-Therapy Device: An Interdisciplinary Solution for Patients with Chronic Dysphagia

Constantinescu

Stroulia

Rieger

2014

2014 IEEE 27th International Symposium on Computer-Based Medical Systems

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Swallowing impairments, or dysphagia, can lead to serious health problems and psychosocial concerns. Effective treatment can be enhanced with the use of adjuvant visual biofeedback from surface electromyography (sEMG) to monitor muscle movement during intensive swallowing exercises. However, access to this therapy is currently possible only in a clinical setting, and is therefore restricted due to limited clinical capacity and technology costs. In this paper, we describe the concept for a new hardware-and-software mobile system for swallowing therapy: Mobili-T. The system, designed by an interdisciplinary team of biomedical engineers, clinicians, and industrial designers, will help patients with dysphagia go through their rehabilitation regimens at home.

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Oral vs. pharyngeal dysphagia: surface electromyography randomized study

Cited by 9 publications

References 21 publications

Automatic Detection of Swallowing Events by Acoustical Means for Applications of Monitoring of Ingestive Behavior

Automatic Detection of Swallowing Events by Acoustical Means for Applications of Monitoring of Ingestive Behavior

Electromyographic study assessing swallowing function in subacute stroke patients with respiratory muscle weakness

Mobili-T: A Mobile Swallowing-Therapy Device: An Interdisciplinary Solution for Patients with Chronic Dysphagia

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