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.
Results
Showing 1 to 20 of 45 for “"Hand -- Movements"”.
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Investigating neural mechanisms of hand movements in virtual reality
… recovery of the upper limbs after stroke (Ramachandran et al., 1995). Functional MRI studies have demonstrated activation of the motor areas in the hemisphere ipsilateral to the moving hand in response to MVF. However, the neural mechanisms of MVF are still unclear. This Electroencephalography …
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Towards a Minimum Input Biodynamic Model of Multi-Fingered Hand Movements
… including design of next-generation hand prostheses or hand rehabilitation strategies, and advancement of digital human simulation and virtual reality technologies.
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Kinesthetic perception and schizophrenia
… patients as to their ability to reproduce movements perceived by kinesthetic stimulation. Kinesthetic perception, for the purpose of this study, was restricted to the reproduction of single arm-hand movements in a horizontal plane, away from the body. The magnitude of errors as a function …
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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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The Use of High-Density ECoG for Functional Mapping and Neural Decoding
… with 3-4 mm spacing. In order to locate the hand area of the motor cortex in patients underwent brain surgery, we recorded ECoG from customized high-density grids while they executed various hand movements during awake surgeries. A dedicated system was designed to perform reliable data …
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Inter-fingercoordinated DC motor driven grasping robotic hand
Many robotic hands have individually driven joints, which is both energy inefficient and complicated to control. An alternative method includes employing only one motor to control multiple joints. Investigating humanoid hand movements used in everyday tasks, graduate students working with Professor …
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Action Intention Modulates the Activity Pattern in Early Visual Areas
… using fMRI. Participants performed Align or Open Hand movements to two oriented objects. We localized the calcarine sulcus, corresponding to the periphery, and the occipital pole, corresponding to the fovea. During planning, univariate analysis did not reveal significant results so we used …
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Visual Computing and AI Technologies to Analyse Movement Disorders Associated with Parkinson’s Disease for Diagnostic Purposes
… opening-closing and pronation-supination hand movements. Clinicians reviewed movement performance in each video and assigned corresponding MDS-UPDRS scores, providing motor symptom severity class labels for classification and correlation analysis. A real-time computer vision method used a …
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Orchestral Conducting in Virtual Reality
… a simulated orchestra. VRC detects the user’s hand movements and algorithmically infers fundamental conducting gestures, such as timekeeping and accent signaling, with the use of carefully fine-tuned parameters. In turn, VRC adjusts the orchestra’s produced sound, modeling a real-life …
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Real-time Immersive human-computer interaction based on tracking and recognition of dynamic hand gestures
… immersion and physical interaction. With the hand based HCI being a key HCI modality for object manipulation and gesture based communication, challenges are presented to provide users a natural, intuitive, effortless, precise, and real-time method for HCI based on dynamic hand gestures, due to …
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Adaptable videogame platform for interactive upper extremity rehabilitation
… encourage purposeful upper extremity gross motor movements. Virtual reality (VR) technology is a popular application for rehabilitation therapies but there is a constant need for more accessible and affordable systems. We have developed a recreational VR game platform can be used as an independent …
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Surface electromyography signal classification using SFDN+DNN for hand gesture recognition
… the Surface Electromyography (SEMG) signals for hand movement recognition is presented and compared to the other approaches in the literature. EMG or muscle’s cells electrical activity are the electrical signals that are carried from the brain to the muscles through the spinal cord. These signals …
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Virtual reality based creation of concept model designs for CAD systems
… performed in the virtual space. The desianer's hand movements generate the tool trajectories and they are obtained by recording the position and orientation of a hand mounted motion tracker. Swept volumes of virtual tools are generated from the geometry of the tool and its trajectories. Then …
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Acceleration-Based Gesture Recognition for Conducting with Hidden Markov Models
… is able to successfully reject non-meaningful hand movements, applying a threshold model. The system makes use of a discrete hidden Markov model in conjunction with a modified version of the Viterbi algorithm, which is specifically adopted for continuous gesture recognition. By performing …
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Reabilitação em fratura do rádio distal
… electronic device - Leap Motion - which captures movements motivated by a game that makes the man use hand movements to perform this command. They were made initial and final evaluations in the goniometer to measure joint range of motion and applying a standardized instrument, the Canadian …
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Interface natural em 3D para animações interativas
… tools capable of capturing gestures and hand movements in real time. The captured data is used by the algorithm to automatically construct new poses of the animation sequence during the user’s performance. In addition, we have these markers on surfaces with the intention of mapping …
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Left-handed BCI - examining effects of handedness and hand dominance on EEG grasp classification
… (EMG) data, to be capable of classifying fine hand movements with a high degree of accuracy, providing avenues for the design of highly attenuated prosthetic limbs. Studies which have examined such uses for BCIs, however, seldom examine the effects of handedness, as well as off-hand or …
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Integrated Wearable Devices for Prosthetic Applications
… and control strategies for prosthetic hands limit people's dexterity, making daily activities burdensome. Therefore, it is necessary to develop new technologies to improve sensory feedback and implement control strategies to enhance the functionality of prosthetic hands. This thesis …
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Multimodal Interaction for Text Entry and Control in Mixed Reality
… systems through dwell-free eye typing, and eye-hand coordination in mid-air gesture typing. Through iterative prototyping and controlled empirical studies, the research demonstrates that a multimodal interaction method, combining gaze for coarse positioning and hand gestures for fine control, …
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