Results 31 to 40 of about 570,610 (284)

Evolution of prehension ability in an anthropomorphic neurorobotic arm

Frontiers in Neurorobotics, 2007
In this paper, we show how a simulated anthropomorphic robotic arm controlled by an artificial neural network can develop effective reaching and grasping behaviour through a trial and error process in which the free parameters encode the control rules ...
Gianluca Massera, Gianluca Massera, Angelo Cangelosi, Stefano Nolfi   +3 more
doaj   +1 more source

Generalizability of muscle synergies in isometric force generation versus point-to-point reaching in the human upper extremity workspace

Frontiers in Human Neuroscience, 2023
Isometric force generation and kinematic reaching in the upper extremity has been found to be represented by a limited number of muscle synergies, even across task-specific variations.
Katherine Pham, Manuel Portilla-Jiménez, Jinsook Roh   +2 more
doaj   +1 more source

Effects of Human Cerebellar Thalamus Disruption on Adaptive Control of Reaching [PDF]

, 2010
Lesion or degeneration of the cerebellum can profoundly impair adaptive control of reaching in humans. Computational models have proposed that internal models that help control movements form in the cerebellum and influence planned motor output through ...
Chen, Haiyin, Hua, Sherwin E., Lenz, Frederick A., Shadmehr, Reza, Smith, Maurice A   +4 more
core   +1 more source

Bionics Solution to Learn the Arm Reaching with Collision Avoidance

Applied Bionics and Biomechanics, 2005
This article presents a learning model that simulates the control of an anthropomorphic arm kinematics motion. The objective is to reach and grasp a static prototypic object placed behind different kinds of obstacle in size and position.
P. Gorce, P. Bendahan
doaj   +1 more source

Modified Functional Reach Test: Upper-Body Kinematics and Muscular Activity in Chronic Stroke Survivors

Sensors, 2021
Effective control of trunk muscles is fundamental to perform most daily activities. Stroke affects this ability also when sitting, and the Modified Functional Reach Test is a simple clinical method to evaluate sitting balance.
Giorgia Marchesi, Giulia Ballardini, Laura Barone, Psiche Giannoni, Carmelo Lentino, Alice De Luca, Maura Casadio   +6 more
doaj   +1 more source

Submovements During Reaching Movements after Stroke [PDF]

, 2014
Neurological deficits after cerebrovascular accidents very frequently disrupt the kinematics of voluntary movements with the consequent impact in daily life activities.
Ghez, Claude, Laczko, Jozsef, Piovesan, Davide, Scheidt, Robert A., Simo, Lucia S.   +4 more
core   +2 more sources

Measuring Habitual Arm Use Post-stroke With a Bilateral Time-Constrained Reaching Task

Frontiers in Neurology, 2018
Background: Spontaneous use of the more-affected arm is a meaningful indicator of stroke recovery. The Bilateral Arm Reaching Test (BART) was previously developed to quantify arm use by measuring arm choice to targets projected over a horizontal hemi ...
Sujin Kim, Sujin Kim, Hyeshin Park, Hyeshin Park, Cheol E. Han, Carolee J. Winstein, Nicolas Schweighofer   +6 more
doaj   +1 more source

Phase Dependent Thermopower in Andreev Interferometers

, 1998
We report measurements of the thermopower S of mesoscopic Andreev interferometers, which are hybrid loops with one arm fabricated from a superconductor (Al), and one arm from a normal metal (Au). S depends on the phase of electrons in the interferometer,
A. Dimoulas, A. F. Andreev, A. F. Andreev, Chen-Jung Chien, F. J. Blatt, G. Neuttiens, H. Courtois, H. Pothier, J. Eom, Jonghwa Eom, K. E. Nagaev, L. Y. Gorelik, M. Henny, N. Ashcroft, N. R. Claughton, P. Charlat, P. G. N. de Vegvar, R. S. Crisp, S. G. den Hartog, V. T. Petrashov, Venkat Chandrasekhar, Y. M. Galperin, Y. M. Galperin   +22 more
core   +1 more source

Ultra-Strong Optomechanics Incorporating the Dynamical Casimir Effect [PDF]

, 2015
We propose a superconducting circuit comprising a dc-SQUID with mechanically compliant arm embedded in a coplanar microwave cavity that realizes an optomechanical system with a degenerate or non-degenerate parametric interaction generated via the ...
Blencowe, M. P., Nation, P. D., Suh, J.
core   +3 more sources

Optic ataxia as a model to investigate the role of the posterior parietal cortex in visually guided action: Evidence from studies of patient M.H.

Frontiers in Human Neuroscience, 2013
Optic ataxia is a neuropsychological disorder that affects the ability to interact with objects presented in the visual modality following either unilateral or bilateral lesions of the posterior parietal cortex (PPC).
Cristiana eCavina-Pratesi, Jason David Connolly, Arthur David Milner   +2 more
doaj   +1 more source