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 “"Voluntary movements"”.
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The Role of the Cortico-Basal Ganglia-System in Voluntary Movements
Bodies with multiple limbs and joints have endless possibilities to move around in their surrounding space. How the nervous system controls this amount of degrees of freedom in motor execution is a question under vigorous debate. In an ambition to explore related aspects of motor control we …
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Comparison of muscle synergies elicited from transcranial meganetic stimulation (tms) and voluntary movements
… muscle synergies matching ones observed in voluntary movements in healthy human subjects and whether these synergies can serve as frameworks to predict EMG patterns evoked by either TMS or voluntary movements. Five healthy right-handed subjects participated in the study. 8 hand muscles were …
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Electrophysiological Recording of the Brain, Visualization, Prediction, and Interconnectivity
… communicate with the cortical layers during voluntary movements. This allows investigating the inter-coupling between the sensorimotor cortex and basal ganglia and how cortico-basal ganglia coupling changes with respect to the movement. The association of coherence with power suggests that a …
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Events prediction in electroencephalographic signals
… protocols involving brisk and very constrained movements have been widely explored in BCI studies, more natural movements have barely been considered. The choice of protocols that entail non-realistic movements emanates from the generation of well understood neuronal correlates modulated by the …
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Civilian soldiers in Staffordshire 1793-1823
The thesis is concerned with civilian soldier movements raised in Staffordshire between 1793 and 1823: - the militias, the volunteer infantry movements and the yeomanry cavalry. In order to assess standards of performance in the various movements, it has been necessary to draw comparisons with …
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Design and Control of an Ergonomic Wearable Full-Wrist Exoskeleton for Pathological Tremor Alleviation
… pathological tremors. Pathological tremors are involuntary, rhythmic, and oscillatory movements that manifest in limbs, the head, and other body parts. Among the existing treatments, mechanical loading through wearable rehabilitation devices is popular for being non-invasive and innocuous to the …
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Volition and the Readiness Potential
… that non-conscious brain processes predetermine voluntary movements (Libet, Gleason, Wright, & Pearl, 1983). While the study’s basic results have been replicated, its validity and assumptions have been questioned. Dominik et al. (2017) provided evidence against the study’s assumption that …
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Mapping of Cortical Motor Reorganization in Spinal Cord Injury
… connections. There is a change in the control of voluntary movements of the extremities by the cerebral cortex of the brain following spinal cord injury.</p> <p>The technology of high-resolution EEG co-registered with MRI was applied to non-invasively investigate the brain’s movement control …
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Shared Control Based on Predictability Analysis With Application to Human-SuperLimb Collaboration
… (PCA) to measure the predictability of hand movements during the bimanual task. Correlation data analysis reveals that a few degrees of freedom (DOF) of the hand holding the knife are not significantly correlated with any other DOF, indicating independent, voluntary movements that are …
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Motor unit firing rate control of agonist skeletal muscle during voluntary isometric and shortening contractions with limb movement
Voluntary movements throughout mammalian lifespan require skeletal muscle contractions that are controlled by time- and recruitment-dependent firing rate patterns. Single motor unit (MU) activity reflects the final efferent neural drive to the muscle, yet the underlying neural control of movement …
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Robust adaptive control modeling of human arm movements subject to altered gravity and mechanical loads
… and the actual sensory feedback resulting from voluntary movements. This incongruence results in a reinterpretation or neglect of gravity-induced sensory input signals. Over time, new internal models develop, gradually compensating for the loss of spatial reference. The study of adaptation of …
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Plasticity of the cortical representation of finger extensors induced by paired associative stimulation
… and illustrates that interactions of PAS with voluntary movements impacts the degree as well as the state of cortical excitability. Rules governing the interactions of brain stimulation techniques and motor learning are important because brain stimulation techniques can be used to modify and …
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Investigation of Future Voluntary Movement Prediction for Pathological Tremor-Alleviating Exoskeletons
… distinguish and predict the patient's autonomous movements. These requirements can ensure that the exoskeleton minimizes the influence of involuntary tremors while facilitating the patient's voluntary movements, enabling patients to experience a smooth and natural operational experience similar to …
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Aspects of stress with particular reference to mytilid mussels and their parasites
… invariably different from those of non-lethal voluntary movements. Dying dynamics have increasing velocity; voluntary dynamics show maximum velocity initially. Analysis of stimuli effects, often interpreted as eustresses, show that assays covering distal as well as proximal effects and those …
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Striatal Microcircuits Underlying Control of Actions
… body configuration or posture. A key feature of voluntary movements is that we can arbitrarily vary movement velocity, defined as the rate of change in body configurations. Despite extensive studies that have attempted to elucidate the relationship between neurons in the dorsal striatum and …