Results 21 to 30 of about 122,317 (249)

Monitoring Arm Movements Post-Stroke for Applications in Rehabilitation and Home Settings

open access: yesIEEE Transactions on Neural Systems and Rehabilitation Engineering, 2022
Optimal recovery of arm function following stroke requires patients to perform a large number of functional arm movements in clinical therapy sessions, as well as at home.
Juan Pablo Gomez-Arrunategui   +2 more
doaj   +1 more source

Evolution of prehension ability in an anthropomorphic neurorobotic arm

open access: yesFrontiers 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   +3 more
doaj   +1 more source

Impairments of the arm and hand are highly correlated during subacute stroke

open access: yesJournal of Rehabilitation Medicine, 2023
Background: The classical description of poststroke upper limb impairment follows a proximalto-distal impairment gradient. Previous studies are equivocal on whether the hand is more impaired than the arm.
Lydia N. Reid   +2 more
doaj   +1 more source

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

open access: yesFrontiers 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   +2 more
doaj   +1 more source

Bionics Solution to Learn the Arm Reaching with Collision Avoidance

open access: yesApplied 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

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

open access: yesFrontiers 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   +6 more
doaj   +1 more source

On Control of Reaching Movements for Musculo-Skeletal Redundant Arm Model

open access: yesApplied Bionics and Biomechanics, 2009
This paper focuses on a dynamic sensory-motor control mechanism of reaching movements for a musculo-skeletal redundant arm model. The formulation of a musculo-skeletal redundant arm system, which takes into account non-linear muscle properties obtained ...
Kenji Tahara   +3 more
doaj   +1 more source

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.

open access: yesFrontiers 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   +2 more
doaj   +1 more source

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

open access: yesSensors, 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   +6 more
doaj   +1 more source

Brain-Machine Interface to Control a Prosthetic Arm with Monkey ECoGs during Periodic Movements

open access: yesFrontiers in Neuroscience, 2014
Brain Machine Interfaces (BMIs) are promising technologies to rehabilitate the function of upper limbs in severely paralyzed patients. We succeeded in developing a BMI prosthetic arm for a monkey implanted with electrocorticogram (ECoG) electrodes and ...
Soichiro eMorishita   +7 more
doaj   +1 more source

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