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 15 of 15 for “"Muscle synergies"”.
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Cortical Mechanisms of Human Pelvic Floor Muscle Synergies
… mechanisms that underlie human pelvic floor muscle synergies. Our first original experiment involved the study of 20 healthy male controls who were instructed to perform a variety of muscle tasks presumed to be associated with pelvic floor muscle synergies. Surface electromyography (EMG) …
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Sensory modulation of muscle synergies for motor adaptation during natural behaviors
… task of coordination by grouping multiple muscles together into units of activation, or muscle synergies. Previous studies have shown that electromyogram (EMG) signals collected from many muscles during natural behaviors can be reconstructed by linearly combining a few synergies, identified …
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Comparison of muscle synergies elicited from transcranial meganetic stimulation (tms) and voluntary movements
… refers to as the degree of freedom problem. The Muscle Synergy Hypothesis is one of the hypotheses that aim to resolve the problem which defines that a muscle synergy is a combination of a small set of muscles activated at different levels, serving as a building block that constructs motor …
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Modules in the brainstem and spinal cord underlying motor behaviors
… can be generated by appropriate combinations of muscle synergies controlled by the nervous system. However, which areas of the central nervous system are responsible for structuring and combining muscle synergies remains an open question. In my thesis, I have addressed the question whether the …
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Linear control model of the spinal processing of descending neural signals
… system in the horizontal plane, its muscles, and spinal monosynaptic stretch reflexes. In addition, it incorporates recent findings of muscle synergies encoded within the spinal cord and demonstrates that these muscle synergies can be reorganized into a set of Kinematic Control …
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EMG-EMG Coherence Analysis of Elbow and Shoulder Muscles
… 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. Through a muscle synergy study [13], co-activation in …
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Bio-mechanical characterisation of synergistic muscle control in goal directed movements
… movement requires the coordinated activation of muscles to produce precise muscle forces and joint torques. The co-ordination of muscles, acting on multi-joint limbs and characterised by highly non-linear dynamics, requires significant computational effort. The synergistic control hypothesis …
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Temporal and spatial muscle synergy features and its neural origins during sit-to-stand and stand-to-sit tasks
… perform the transition tasks normally. Several muscles act together to achieve these motions and the inability to perform these daily life tasks, therefore, present the need to understand why they are important and what is the role of muscle synergy in the performance of such tasks. Reduced …
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Unsupervised learning of vocal tract sensory-motor synergies
… dimensionality reduction algorithms in learning muscle synergies and perceptual primitives that reflect the structure in biological systems, an approach to learning sensory-motor synergies via dynamic factor analysis for control of a simulated vocal tract is presented here. This framework is …
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Neuromuscular modularity and behavioral correlates of motor control
… and sensorimotor interactions. I found that muscle activity in grasping and reaching behaviors could be reconstructed by linear combinations of a small number of time-varying muscle synergies, each fit with coefficients unique to the behavior. However, the generalization of these synergies …
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Control of mechanically stable movement by spinalized frogs
… spinal motor system might use only a few muscle synergies for the production of a range of movements. The evolution of such synergies encoded in the spinal cord could be dictated by mechanical stability requirements for interacting with the environment or by particular performance …
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Characterizing Human Motor Adaptation and Learning When Using Different Occupational Exoskeletons
… Movement smoothness improved by 30%, and muscle activation patterns converged to those of experienced users over three sessions, yet novices retained up to ∼ 50% longer joint angular velocities. These results highlight the need for extended familiarization to achieve proficient and …
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Development of an Industrially Deployable Personalized Ankle–Foot Orthosis System
… that the activation of the Rectus Femoris (RF) muscle and specific muscle synergies are highly correlated with metabolic effort. Based on this finding, Chapter 3 details the implementation of an EMG-based HIL optimization. The results demonstrated that minimizing RF activation in real-time …
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Multimodal Analysis of Functional Reach to Grasp for Telerehabilitation
L'abstract è presente nell'allegato / the abstract is in the attachment
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THE INFLUENCE OF THE BACK FUNCTIONAL LINE ON LOWER EXTREMITY FRONTAL PLANE KINEMATICS AND KINEMATIC PREDICTORS OF LOADING DURING RUNNING
… of stiffness throughout stance phase. Upper body muscle activity and movement have a relationship to lower body dynamics; however, the literature has largely neglected their role during running. To date, biomechanical gait analysis has primarily focused on lower extremity mechanics and muscle …