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Endoscopic electromyography and manometry of the human sphincter of Oddi.

The myoelectric and manometric activities of the sphincter of Oddi were recorded in 8 patients using an original probe passed through the papilla of Vater during duodenoscopy. The sphincter of Oddi's myoelectric activity showed rhythmic bursts of action potentials which appeared in correspondence with the ascending phase of the phasic pressure waves. On the basis of these results, we believe that electromyography could in some cases replace manometry for studying sphincter of Oddi motility, since it avoids pressure perfusion of the bilio-pancreatic tract, with its concomitant risks, and provid…

Laryngeal Electromyography-Guided Injection Laryngoplasty: A Prospective Series.

OBJECTIVE: Laryngeal electromyography (LEMG) is a well-established method for botulinum toxin (Botox) injections and has also been advocated for the treatment of vocal fold paralysis. We hypothesize that LEMG may also help with the therapeutic injection of other substances. We report on 64 subjects and 118 LEMG-guided injection laryngoplasty procedures. Fiber-optic laryngoscopy was performed after injection to assess the validity of this approach. MATERIAL AND METHODS: Between 2020 and 2026, 64 subjects were selected for LEMG-guided injections, totaling 118 vocal fold injections. Inclusion cr…

Biomechanical evaluation of nursing cart handles using electromyography.

The ergonomic design of emergency nursing carts is crucial for reducing musculoskeletal strain during clinical tasks. This study evaluates h … brachii, extensor carpi radialis longus (ECR), and extensor carpi ulnaris (ECU) was recorded using electromyography (EMG). This study also discusses the limitations of EMG and motion tracking by comparing them with biomechanical measurement tools such as load cells, strain gauges, and subjective assessment tools like questionnaires and checklists. Data were analy …

Surface Electromyography-Based Recognition of Electronic Taste Sensations.

Taste sensation recognition is a core for taste-related queries. Most prior research has been devoted to recognizing the basic taste sensations using the Brain-Computer Interface (BCI), which includes EEG, MEG, EMG, and fMRI. This research aims to recognize electronic taste (E-Taste) sensations based on surface electromyography (sEMG). Silver electrodes with platinum plating of the E-Taste device were placed on the tongue's tip to stimulate various tastes and flavors. In contrast, the electrodes of the sEMG were placed on facial muscles to collect the data. The dataset was organized and prepro…

Transpsoas Lumbar Interbody Fusion Without Psoas Stimulated Electromyography.

STUDY DESIGN: This is a retrospective case review. OBJECTIVE: The objective of this study was to present an anatomic approach to transpsoas interbody fusion without psoas stimulated electromyography (sEMG) and to evaluate the rate of neurological and approach-related complications. BACKGROUND: The transpsoas approaches have become commonly utilized for lumbar interbody fusion and may have certain advantages compared with other methods of interbody stabilization. Traditionally, transpsoas approaches have been performed utilizing sEMG as it has been purported to reduce the risk of injury to th…

Standardised surface electromyography allows effective submental muscles assessment.

The aims of this pilot study were to evaluate: (i) the reproducibility and variability of an electromyographical protocol developed for the assessment of submental muscles (SM) (ii) to apply the new protocol to maximal teeth clenching, a simple and largely studied static task in order to quantify the relative contribution of submental muscles. In 20 healthy subjects, aged 19-35years, surface electromyography of SM, masseter (MM) and anterior temporalis (TA) muscles was performed during maximal voluntary clenching (MVC) with and without cotton rolls and the pushing of the tongue against the pal…

Quantitative electromyography improves prediction in vocal fold paralysis.

OBJECTIVES: Quantitative laryngeal electromyography (LEMG) using turns analysis can differentiate acute vocal fold paralysis from normal controls. The objective of this study is to determine if using both traditional qualitative LEMG measurements in addition to turns analysis improves prognostic accuracy in patients with acute vocal fold paralysis who demonstrate voluntary motor activity. STUDY DESIGN: Retrospective review of LEMG data (qualitative and quantitative) and charts of patients with vocal fold paralysis on flexible laryngoscopy, recurrent laryngeal neuropathy, and varying degrees o…

Using laryngeal electromyography to differentiate presbylarynges from paresis.

PURPOSE: Differential diagnosis of patients over 64 years of age reporting hoarseness is challenging. Laryngeal electromyography (LEMG) was used to determine the status of the recurrent and superior laryngeal nerves. The authors hypothesized that individuals with hoarseness but normal LEMG would have measures similar to those of patients from previous studies with presbylarynges and significantly different from those of patients with abnormal LEMG. METHOD: A retrospective chart review of acoustic, aerodynamic, endoscopic, and self-rating measures was completed for 52 individuals over 64 years…

Facial nerve electromyography and other cranial nerve monitoring.

Cranial nerves can be damaged during a variety of surgical procedures. The function of the cranial nerves can be monitored during surgery with electromyography (EMG), compound nerve and muscle action potentials (MAP), and auditory evoked potentials (AEP). We report important technical considerations that allow reliable recordings of these modalities during surgery, the criteria for determining a significant change in these electrophysiologic measures of function, the application of these techniques to specific surgical procedures, and the data that support the utility of cranial nerve monitori…

Electromyography of anal sphincters after radical gynecological surgery.

In this study, the Authors report their own experience in electromyography of anal sphincters. The clinical evaluation concerns a clinical series of 14 patients suffering from carcinoma of the uterine cervix at SPS stage A and B, and undergoing a personalized radical hysterectomy during 1986. The protocol included a preoperative electromyographic and urodynamic evaluation and a post-operative re-evaluation 30-60 days after surgery. The pre-operative evaluation in both the urodynamic test and the electromyographic test showed bladder-urethral function in all the cases examined. The post-operati…

Plantar Pressure-Paraspinal Surface Electromyography Associations and Within-Participant Surface Electromyography Changes Under Orthotic Insoles in Idiopathic Scoliosis: A Pilot Study.

OBJECTIVES: To examine associations between plantar pressure and paraspinal surface electromyography amplitude in idiopathic scoliosis and to describe within-participant changes in paraspinal surface electromyography symmetry under ordinary (nonorthotic) versus orthotic insole conditions. DESIGN: A cross-sectional observational correlation study and a single-arm, within-participant repeated-measures comparison. SETTING: Hospital. PARTICIPANTS: Twenty-four patients (N=24) with idiopathic scoliosis and without organic lower-limb or ankle disease. INTERVENTIONS: After baseline testing, partic…

Patient tolerance of laryngeal electromyography: a single-center study.

This observational single-center study, conducted from 2021 to 2024, evaluated patient tolerance of laryngeal electromyography (LEMG) using a standardized post-procedural questionnaire completed by 97 patients undergoing LEMG for suspected laryngeal neuromuscular dysfunction. After the procedure, patients completed a structured questionnaire designed to assess procedural tolerance across five domains: overall perception, pain intensity (visual analogue scale [VAS]), anxiety, cooperation, and post-procedural discomfort. A total tolerance score (range 0-21) was calculated for each patient. We ad…

Оценка значения электромиографии для периферальной Neuropathy Бортезомиба.

ВВЕДЕНИЕ: В настоящем исследовании изучается взаимосвязь между общими терминологическими критериями Национального института раковых заболеваний (НСИ-КТК) для классификации периферической нейропатии, вызванной борцезомибами, и объективными дисфункциями моторного/сенсорного нерва, оцениваемыми в ходе исследований нервной проводимости (КНС). Она также оценивает корреляцию между конкретными аномалиями нерва и отсутствием прогресса в выживании (PFS). МЕТОДЫ: Thirty-three Были зачислены пациенты с множественной миеломой, развивающей периферическую нейропотию во время лечения бортезомибной системы. У

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… Electromyography Acquisition Electrophysiological data were obtained from the Electromyography Department at Zhongshan Hospital using EMG (electromyography) equipment (Natus, America). … The time from disease onset to electromyography (EMG) was not significantly different between the groups ( p= 0.2935), and the duration of treatment to NCS was also comparable ( p= 0.4448). …

Automatic detection of swallowing events based on surface electromyography.

Clinical evaluation of dysphagia requires modeling different phases of swallowing. This process is expensive, invasive, subjective, and typically based on Videofluoroscopic Swallowing Study (VFSS) studies. This work evaluates the use of surface electromyography (sEMG) signals for detecting bolus passage through the mandible line (ManL) and upper esophageal sphincter (UES) in patients with oropharyngeal dysphagia. The paper introduces a novel method where GRU networks are fed with spectrograms resulting from processing sEMG signals. Using VFSS as the gold standard, our results yielded F1 scores…

Electromyography (EMG) Signal Processing to Evaluate Low-Frequency Tremors.

Objective quantification of tremor remains a challenge in Parkinson's disease (PD) assessment, with current clinical assessments relying largely on subjective scale ratings. This study evaluates the feasibility and signal behaviour of integrating surface electromyography (sEMG) with MDS-UPDRS-aligned tasks in a healthy adult cohort, with the aim of establishing normative low-frequency muscle activation profiles. Thirty-two healthy participants (mean age 27.6 ± 5.3 years) completed seven upper-limb tasks derived from the MDS-UPDRS while sEMG data were recorded from antagonistic forearm muscles.…

Quantitative Analysis of Surface Electromyography for Pediatric Neuromuscular Disorders.

INTRODUCTION: Needle electromyography (EMG) has been an important diagnostic tool, although discomfort may limit its use in some children. We investigated the diagnostic utility of the clustering index (CI) method, a quantitative analysis for surface EMG (SEMG), in children. METHODS: SEMG was recorded from the tibialis anterior muscle. Discriminant analysis between patients with neurogenic disorders and patients with myopathy was performed for whole epochs by using the CI and area values. RESULTS: Forty-five children (29 with myopathy, 16 with neurogenic disorders; age 9 ± 3.9 years) were en…