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 17 of 17 for “"Motor adaptation"”.
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Sensory modulation of muscle synergies for motor adaptation during natural behaviors
To achieve any motor behavior, the central nervous system (CNS) must coordinate the many degrees of freedom in the musculoskeletal apparatus. It has been suggested that the CNS simplifies this formidable task of coordination by grouping multiple muscles together into units of activation, or muscle …
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Characterizing Human Motor Adaptation and Learning When Using Different Occupational Exoskeletons
… addresses these gaps through studies examining motor adaptation and learning across diverse exoskeleton types and occupationally relevant tasks. Three separate studies were completed. First, adaptation to a whole-body powered exoskeleton was evaluated during stationary load handling. Novice …
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The Effect of Sensory Experience and Movement Observation on Motor Adaptation to Novel Force Perturbations
… interaction with objects, or injury, yet adaptation is both rapid and flexible. When adapting, humans are informed by their direct trial-and-error movement experience, incrementally updating predictive control on the next movement; how the brain processes sensed errors into adaptation is …
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Understanding the body’s kinematic/kinetic responses and motor adaptation to unpredictable gait perturbation induced by a split-belt treadmill in young and older adults
… responses to gait perturbations depending on motor adaptation principles (e.g., decreased forward center of mass (COM) velocity and trunk forward rotation after repeated exposure to the perturbations), which is more task-specific than physical exercises. However, some limitations were not …
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The effects of learning schedules and external visual information on implicit sensorimotor adaptation of upper limb movements.
Implicit motor adaptation is vital for maintaining accurate movements when faced with changes in the environment or our own bodies. Using both simple and complex motor tasks, this dissertation investigates the limits of implicit adaptation in upper-limb motor adaptation, and its sensitivity to …
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The Role of Action Observation in Motor Memory Formation and Retention across Multiple Days
… therapy options in physical therapy to promote motor rehabilitation and recovery. Previous observation studies have found that action observation can facilitate motor learning: people are able to pick up context-specific cues from others’ movements to adapt to a novel mechanical environment. …
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Initial Implicit Changes in Adaptation as a Function of Different Perturbations
Implicit motor adaptation allows us to maintain accurate movements under changing conditions. This process, driven by sensory prediction errors (SPE), mismatches between predicted and observed sensory-motor outcomes, corrects motor commands unconsciously. This study examined the extent to which …
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Role of the precentral cortex in adapting behavior to different mechanical environments
… movement. With repeated experience, sensorimotor maps are adapted to maintain a high level of movement performance regardless of the mechanical environment. This dissertation explored the contribution of the precentral cortex to this process of motor adaptation. In the first experiment, we …
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Methods toward improved lower extremity rehabilitation
… aims to restore function by establishing new motor-cortical connections among the remaining neurons) remains the most viable option for patients. The aim of this thesis is to elucidate some of the underlying neurobiological mechanisms of walking and to develop tools for rehabilitation robotics …
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The role of planning in motor learning
Humans can learn a remarkable diversity of motor skills. While these skills are sometimes long lasting, they may also be subject to interference. For example, people can learn to reach in the presence of a dynamic (force-field) perturbation generated by a robotic interface. However, when two force …
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Promoting enhanced motor planning in prosthesis users via matched limb imitation
… cortical systems active in amputees performing motor tasks may reveal atypical motor control strategies that contribute to these issues. Substantial evidence demonstrates a strong dependence on left parietofrontal cortical areas to successfully plan and execute tool-use movements and pantomimes. …
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Using visual feedback to guide movement: Properties of adaptation in changing environments and Parkinson's disease
… external sensory information into proper motor commands. Current literature characterizes the process of visuomotor adaptation, but fails to consider the incremental response to sensed errors that comprise a fully adaptive process. We aimed to understand the properties of the …
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Plasticity of the cortical representation of finger extensors induced by paired associative stimulation
… explored associative plasticity of the human motor cortical representation with the use of noninvasive transcranial magnetic stimulation (TMS) paired with peripheral electrical stimulation. Paired Associative Stimulation (PAS) has grown in popularity because of its potential clinical …
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The effect of an exercise intervention on peripheral sensorimotor function in neuropathic diabetics
… of an exercise intervention in improving sensorimotor function in this population is building, but care is needed when implementing these interventions due to the risk of exacerbating associated neuropathic complications. Therefore the purpose of the current thesis was to investigate the effect …
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The neuromuscular efficiency of lower back muscles in low back pain
… the assumptions made by the recently presented ‘motor adaptation to pain’ model, suggesting a pain-related intra- and intermuscular activation redistribution affecting movement and stiffness of the trunk. Further research is needed to distinguish the grade of NME impairment between LBP subgroups.
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Motor control strategies in response to unexpected disturbances of dynamic postural control in people with and without low back pain
… of limited activity and disability. Impaired motor control has been found to be one of the possible factors related to the development or persistence of LBP. In particularly, motor control strategies seemed to be altered in situations requiring reactive responses of the trunk counteracting …
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Ontogenetic and comparative aspects of cerebellar and motor development
During the course of development the motor repertoire of animals and humans alike go through dramatic changes. New motor patterns arise; movements become coordinated, improve in precision and are at the same time continuously calibrated to the changing body dimensions. The cerebellum is critical …