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 19 of 19 for “"Movement kinematics"”.
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Anticipation of Movement Outcome Through Perception of Movement Kinematics
… different body segments for the anticipation of movement outcome was investigated. Twelve novice and 13 expert tennis players participated in three experiments. In Experiment 1, the players observed the movements of an expert player (performer) who performed four strokes in three types of display …
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Apraxia: anaylsis of assessment and rehabilitation
… were used to investigate clinical tests and the kinematics ofmovement~ apraxic (n=17) and non-apraxic (n=13) left hemisphere damaged patients, and normal control subjects (n=ll). Using computergraphic techniques, the data provided evidence of disruption to the temporalspatial aspects of movement …
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Electrocorticographic Neural Correlates of Arm Movements and Associated Goal Orientation in Humans
… analyzed the cortical representation of arm kinematics, target encoding, and goal encoding using subdural electrocorticographic: ECoG) recordings in humans. Using a joystick-based visuomotor task, subjects performed both a standard, delayed match-to-sample center-out task as well as a …
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Motor planning for reach memorization task in 3D space
… attached to its end effector, thus tracking the movement of the subject's arm. Three haptically rendered targets at different points in space were presented to the subjects using stereo virtual environment. The simulation was programmed using Visual C++ and OpenGL. Eight subjects were asked to …
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Constraints on movement variability during a discrete multi-articular action
… of organismic and task constraints affected movement variability during a basketball shooting task. The specific constraints that were manipulated included task expertise, state anxiety and dioptric blur (organismic constraints), and, shooting distance and attentional focus instruction (task …
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MOTOR SEQUENCE LEARNING IN ADULTS WITH ADHD
… strategy, thus maximizing the efficiency of the movements and save time or energy. Motor hyperactivity in individuals with ADHD is clinically well recognized and can be understood as abnormal motor inhibition. Individuals with ADHD often have problems with responding effectively to a situation …
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The Effects of Attentional Load and Anxiety on Aiming Task Performance in Sport
… of task complexity on visual search behaviours, movement kinematics during golf short game shots. Near experts were found to exhibit a significantly longer total quiet eye duration (QED) than the expert group during the putting task; a difference underpinned by having a QE-pre duration of more …
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Decoding Minds: Mentalistic Inference in Autism Spectrum Disorders and ChatGPT Models
… with ASDs struggle to read intentions from movements, but the mechanisms underlying these difficulties remain unknown. In a set of experiments, we employed combined motion tracking, psychophysics, and computational analyses to examine intention reading in ASDs with single-trial resolution. …
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Dynamic Gap-Crossing Movements in Jumping and Flying Snakes
… precise relationships between gap distance and movement kinematics have been explored in only a very small number of species. One particularly interesting group of arboreal inhabitants are the flying snakes (Chrysopelea). This species is able to use a dynamic "J-loop" movement to launch its …
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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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Electrophysiological Recording of the Brain, Visualization, Prediction, and Interconnectivity
… relationship between brain activity and movement can be found and whether common features found in different regions are correlated (phase-locked). First, the method of chirplet decomposition offers a new way to visualize the time-frequency content of non-stationary signals with higher …
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Learning from master's muscles : EMG-based bio-feedback tool for augmenting manual fabrication and crafting
… visual feedback, which compares their on-going movements to that of a master craftsman performing the identical task recorded beforehand. Illuminated LEDs placed on the student's forearm relate movement kinematics, an accelerometer, magnetometer, gyroscope and muscle activity, all of which are …
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UNDERSTANDING THE FACTORS INFLUENCING FUNCTIONAL TASKS FOR THE ASSESSMENT OF MUSCULOSKELETAL INJURY-RELATED BIOMECHANICS
… functional tasks. Study 1: This study compared kinematics when executing three squat-based tasks (single-leg squat, anterior step-down, and lateral step-down) at three different speeds (slow, fast and self-selected. The study found that both task type and movement speed can influence several …
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Functional organization of the human superior temporal sulcus
… types of social information, such as body movement, vocal sounds, linguistic input, and abstract mental states, suggesting a functional division of labor in social perception. I also identify a multimodal region that responds both to face movement and to vocal sounds. Chapters 3-4 further …
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Does cerebellar cortex function as a forward internal model for motor control?
… postulated that to produce rapid, finely tuned movements, a component of the control circuitry must bypass long sensory feedback delays by providing an estimate of the consequences resulting from a motor command. This control element, termed a forward internal model, receives an efferent copy of …
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Virtual reality visual feedback and its effect on brain excitability
… with online visual feedback of their hand movement. First, the author develops a protocol to analyze variability in movement kinematics between experimental sessions and conditions and its possible effect on modulating neural activity. Second, brain reorganization after 2 weeks of …
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Sensorimotor Processes Underpinning Imitaiton Learning of Biological Motion
… literature to examine imitation of underlying movement kinematics. Across four experiments, imitation of the kinematic structures of biological and non-biological motion models was examined to investigate the processes involved in imitation learning. The purpose of the first experimental …
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Visual Contributions to the Vestibulo-Ocular Reflex during Balance Recovery Tasks
… Gain). This measure only includes head angular movements; linear translations are not accounted for. These investigations postulate an alternative method of VOR quantification, one that assesses retinal image stability during head angular and linear movements (Foveal fixation (FF)). This method …