Adaptation to Stable and Unstable Dynamics Achieved By Combined Impedance Control and Inverse Dynamics Model
نویسندگان
چکیده
منابع مشابه
Adaptation to stable and unstable dynamics achieved by combined impedance control and inverse dynamics model.
This study compared adaptation in novel force fields where trajectories were initially either stable or unstable to elucidate the processes of learning novel skills and adapting to new environments. Subjects learned to move in a null force field (NF), which was unexpectedly changed either to a velocity-dependent force field (VF), which resulted in perturbed but stable hand trajectories, or a po...
متن کاملDifferent mechanisms involved in adaptation to stable and unstable dynamics.
Recently, we demonstrated that humans can learn to make accurate movements in an unstable environment by controlling magnitude, shape, and orientation of the endpoint impedance. Although previous studies of human motor learning suggest that the brain acquires an inverse dynamics model of the novel environment, it is not known whether this control mechanism is operative in unstable environments....
متن کاملGeneralization in Adaptation to Stable and Unstable Dynamics
Humans skillfully manipulate objects and tools despite the inherent instability. In order to succeed at these tasks, the sensorimotor control system must build an internal representation of both the force and mechanical impedance. As it is not practical to either learn or store motor commands for every possible future action, the sensorimotor control system generalizes a control strategy for a ...
متن کاملthe study of bright and surface discrete cavity solitons dynamics in saturable nonlinear media
امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...
Approximate Data Assimilation Schemes for Stable and Unstable Dynamics *
Two suboptimal data assimilation schemes for stable and unstable dynamics are introduced. The rst scheme, the partial singular value decomposition lter, is based on the most dominant singular modes of the tangent linear propagator. The second scheme, the partial eigendecomposition lter, is based on the most dominant eigenmodes of the propagated analysis error covariance matrix. Both schemes rel...
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ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 2003
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.01112.2002