Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 401 for “"EMG"”.
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EMG-EMG Coherence Analysis of Elbow and Shoulder Muscles
Motor coordination can be described by the activation of a few intermuscular coordination patterns, or muscle synergies. Muscle synergy can be defined as a relatively fixed pattern of activation across a set of muscles. The neural mechanisms underlying muscle synergies remain to be fairly unknown. …
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Cost-Effective Prosthetic Hand Controlled by EMG
… and controlled using surface Electromyography (EMG) signals, which are obtained from the human body. Force sensors are used to control required forces needed to grasp and pick objects. A prototype hand is developed and it is experimentally tested to reproduce a wide spectrum of human hand …
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A denoising algorithm for surface EMG decomposition
… ratio, VR) of the MUP ensemble. Decomposed sEMG data from 20 participants at 60% MVC of wrist flexion was used. There were two levels of denoising (relaxed and strict) criteria for removing discharge times associated with waveforms that did not decrease the VR and increase its signal-to-noise …
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Rozpoznávání gest horní končetiny z EMG záznamu
Tato práce se zaobírá rozpoznáváním gest ze sEMG záznamu horní končetiny, návrhem vlastního klasifikátoru použitím strojového učení. Práce je rozdělena do šesti kapitol – v první jsou popsány vlastnosti EMG signálu, v druhé jsou rozepsány současné metody vyhodnocování EMG využívající strojové …
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EMG control of prosthetic ankle plantar flexion
Similar to biological human ankle, today's commercially available powered ankle-foot prostheses can vary impedance and deliver net positive ankle work. These commercially available prostheses are intrinsically controlled. Users cannot intuitively change ankle controller's behavior to perform …
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Analysis of electromyograph (EMG) for controlling wheelchair motion
… who has high level Spinal Cord Injury (SCI), the EMG signal from neck has been chose to trigger the wheelchair. The EMG signals are obtained using disposable electrode from neck muscles which are Sternocleidomastoid and Trapezius muscles, with different direction. For the acquisition of SEMG …
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EMG-based determination of upper extremity virtual trajectory
… in nature and referred as action potentials. An EMG is a summation of action potentials from the muscle fibers under the electrode placed on the skin. Thus it is easy to estimate the nature and timing of the movement from the firing of an EMG signal. Kai Chen in his dissertation has built the …
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Proportional EMG control for above knee pros-theses.
Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1974. M.S.
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Relationship between Surface and Indwelling EMG Spike Shape Measures
Indwelling electromyography (EMG) has great diagnostic value but its invasive and often painful characteristics make it inappropriate for monitoring human movement. Spike shape analysis of the surface electromyographic signal responds to the call for non-invasive EMG measures for monitoring human …
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EMG methods for prosthesis ankle-subtalar free-space control
EMG-based prosthetic joint controllers have been an active research field for more than fifty years. However, several challenges remain to be addressed[9]. Electrodes positioning, controllers calibration, and controllers’ linear approximation error are the most challenging problems among them. This …
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EMG measurement of the adductor muscles during walking and running
… between adductor torque and the corresponding EMG amplitudes during ramped isometric contraction in 10 participants. Study 2 investigated the between-day reliability for EMG measurements for the adductor muscles collected during both walking and running in 10 healthy runners. Study 3 described …
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Oberflächen-EMG-Untersuchungen zum Kontraktionsverhalten der Skelettmuskulatur unter lokaler Wärmeanwendung
Die Objektivierung der Wirkung von thermotherapeutischen Maßnahmen in Form von perkutanen Wärmepackungen in der Rehabilitationsmedizin stellt ein wichtiges, jedoch noch ungeklärtes Problem dar. In dieser Arbeit wird durch den Einsatz der nichtinvasiven Oberflächen-Elektromyographie und der Messung …
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EMG-Informed Estimation of Human Walking Dynamics for Assistive Robots
… of an assistive robot. Electromyography (EMG) signals have been used widely for motion intention estimation. However, most EMG-based models are subject or task-specific, requiring complex calibration. Creating an accurate, EMG-based motion estimation model which is generalizable across …
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Hand Gesture Recognition via Electromyographic (EMG) Armband for CAD Software CONTROL
… for this task is the forearm Electromyographic (EMG) Signal. This signal reflects the contraction state of the forearm muscles. EMG signals are already being used in prosthetics to help amputees have more natural control over their prosthetic limbs. They can also be used for translating sign …
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Creation and Validation of a Dynamic, EMG-Driven Cervical Spine Model
… of daily living. A personalized, dynamic, EMG-driven model is very important, because everybody activates their muscles differently, and that different activation will cause different loading patterns. The goal of this study was to create and evaluate a dynamic, EMG-driven cervical spine …
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EMG Control of an Upper-Limb Rehabilitation Exoskeleton for SCI Affected Users
… and maximize their engagement. Electromyography (EMG) is a promising technique to address this challenge. In this thesis, an EMG control scheme for an upper-limb exoskeleton, the MAHI Exo-II, is designed and tested with a population of able-bodied users, as well as SCI affected subjects. The …
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On the relationship between corticomuscular (EEG-EMG) phase coupling and muscular fatigue
… (EEG) and electromyography (EMG) could have caused the contradictory results when comparing pre-,during and post-fatigue measures of corticomuscular coupling, which consequently affected the conclusions drawn regarding the monitoring of fatigue by the central nervous system. A …
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EMG-Based Human-in-the-Loop Bayesian Optimization to Assist Hip-Centric Activities
… hip exoskeleton assistance using surface EMG-based human-in-the-loop optimization, cutting tuning time from hours to minutes while preserving assistance quality. We show that processed EMG provides a reliable objective for rapid personalization, enabling convergence within typical clinical …
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EMG as a control parameter in lower limb prosthetics : surface vs. implanted electrodes
Human locomotion is controlled by complex neurological patterns. These patterns activate and synchronise the musculoskeletal system to enable efficient and graceful ambulation. A limb amputation results in a partial loss of the complex structure needed for human locomotion. Various prosthetic …
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