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Full-Text Articles in Life Sciences
Visual And Non-Visual Control Of Movement: The Role Of Proprioception In Upper Limb Function After Stroke, Nathan A. Baune
Visual And Non-Visual Control Of Movement: The Role Of Proprioception In Upper Limb Function After Stroke, Nathan A. Baune
Arts & Sciences Electronic Theses and Dissertations
This dissertation presents a series of studies into human reach and grasp, focusing on the neural systems and behaviors of upper-limb action that underly performance under varied sensory conditions: specifically, acting with and without visual feedback of the limb and under typical or impaired proprioceptive sensation (proprioceptive decline with aging and proprioceptive deficit following stroke). Under typical conditions, a combination of visual and non-visual (e.g., proprioception) sources of information are used to guide action. In the instance of stroke survivors or elderly individuals with proprioceptive deficits/decline, there may be a necessary reliance on visual information to perform. The studies are …
Vrshape: A Virtual Reality Tool For Shaping Movement Compensation, Matthew Hale Foreman
Vrshape: A Virtual Reality Tool For Shaping Movement Compensation, Matthew Hale Foreman
Arts & Sciences Electronic Theses and Dissertations
The majority of persons living with chronic stroke experience some form of upper extremity motor impairment that affects their functional movement, performance of meaningful activities, and participation in the flow of daily life. Stroke survivors often compensate for these impairments by adapting their movement patterns to incorporate additional degrees of freedom at new joints and body segments. One of the most common compensatory movements is the recruitment of excessive trunk flexion when reaching with the affected upper extremity. Long-term use of these compensations may lead to suboptimal motor recovery and chronic pain or injury due to overuse. Rehabilitation focuses on …
Lesion Identification And The Effect Of Lesion On Motor Mapping After Stroke, Ruixi Zhou
Lesion Identification And The Effect Of Lesion On Motor Mapping After Stroke, Ruixi Zhou
McKelvey School of Engineering Theses & Dissertations
Stroke is the most common cause of long-term severe disability and the motor system that is most commonly affected in stroke. One of the mechanisms that underlies recovery of motor deficits is reorganization or remapping of functional representations around the motor cortex. This mechanism has been shown in monkeys, but results in human subjects have been variable. In this thesis, I used a database that includes longitudinal behavioral and multimodal imaging data in both stroke patients and healthy controls for two research projects. Firstly, I improved an automatic lesion segmentation method to aid in the identification of the location and …