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10 results for “Dynamic walking”
Data from: Muscle force-length dynamics during walking over obstacles indicates delayed recovery and a shift towards more strut-like function in birds with proprioceptive deficit
<p>Recent studies of in vivo muscle function in guinea fowl revealed that distal leg muscles rapidly modulate force and work to stabilize running in uneven terrain. Previous studies focused on running only, and it remains unclear how muscular mechanisms for stability differ between walking and running. Here we investigate in vivo function of the lateral gastrocnemius (LG) during walking over obstacles. We compare muscle function in birds with intact (iLG) versus self-reinnervated LG (rLG). Self-reinnervation results in proprioceptive feedback deficit due to loss of monosynaptic stretch reflex. We test the hypothesis that proprioceptive deficit results in decreased modulation of EMG activity in response to obstacle contact, and a delayed obstacle recovery compared to iLG. We found that total myoelectric intensity (Etot) of iLG increased by 68% in obstacle strides (S 0) compared to level terrain, suggesting a substantial reflex-mediated response. In contrast, Etot of rLG increased by 31% in S 0 strides compared to level, but also increased by 43% in the first post-obstacle (S+1) stride. In iLG, muscle force and work differed significantly from level only in the S 0 stride, indicating a single-stride recovery. In rLG, force increased in S 0, S+1, and S+2 compared to level, indicating three-stride obstacle recovery. Interestingly, rLG showed little variation in work output and shortening velocity obstacle terrain, indicating a shift towards near isometric strut-like function. Reinnervated birds also adopt a more crouched posture across level and obstacle terrains compared to intact birds. These findings suggest gait specific control mechanisms in walking and running.</p>
Mechanical and metabolic consequences of sagittal trunk lean angle in walking – A dynamic walking perspective
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Data from: Muscle force-length dynamics during walking over obstacles indicates delayed recovery and a shift towards more strut-like function in birds with proprioceptive deficit
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Benchmarking Different QP Formulations and Solvers for Dynamic Quadrupedal Walking
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Walking Training With Partial Body Weight Support on Static and Dynamic Surfaces in Stroke Survivers
ClinicalTrials.gov study NCT02088255. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Retinotopic localizer with embedded dynamic macaque faces and walking humans
<p>Retinotopic localizer with embedded dynamic macaque faces and walking humans. From Zhu, Q., & Vanduffel, W. (2019). Submillimeter fMRI reveals a layout of dorsal visual cortex in macaques, remarkably similar to New World monkeys. <em>Proceedings of the National Academy of Sciences of the United States of America</em>, <em>116</em>(6), 2306–2311. http://doi.org/10.1073/pnas.1805561116</p>
Data from: Does dynamic stability govern propulsive force generation in human walking?
Before succumbing to slower speeds, older adults may walk with a diminished push-off to prioritize stability over mobility. However, direct evidence for trade-offs between push-off intensity and balance control in human walking, independent of changes in speed, has remained elusive. As a critical first step, we conducted two experiments to investigate: (i) the independent effects of walking speed and propulsive force (FP) generation on dynamic stability in young adults, and (ii) the extent to which young adults prioritize dynamic stability in selecting their preferred combination of walking speed and FP generation. Subjects walked on a force-measuring treadmill across a range of speeds as well as at constant speeds while modulating their FP according to a visual biofeedback paradigm based on real-time force measurements. In contrast to improvements when walking slower, walking with a diminished push-off worsened dynamic stability by up to 32%. Rather, we find that young adults adopt an FP at their preferred walking speed that maximizes dynamic stability. One implication of these findings is that the onset of a diminished push-off in old age may independently contribute to poorer balance control and precipitate slower walking speeds.
Data from: Does dynamic stability govern propulsive force generation in human walking?
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Data from: Dynamic structure of locomotor behavior in walking fruit flies
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Walking Dynamic Among Children With Brain Damge
ClinicalTrials.gov study NCT02839369. IPD Sharing: NO. Countries: 1. Publications: 0.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.