Multisession, noninvasive closed-loop neuroprosthetic control of grasping by upper limb amputees

2016 ◽  
pp. 107-128 ◽  
Author(s):  
H.A. Agashe ◽  
A.Y. Paek ◽  
J.L. Contreras-Vidal
Keyword(s):  
Upper Limb ◽  
Closed Loop

scholarly journals Evaluation of Optimal Vibrotactile Feedback for Force-Controlled Upper Limb Myoelectric Prostheses

Sensors ◽  
2019 ◽  
Vol 19 (23) ◽  
pp. 5209 ◽  
Author(s):  
Andrea Gonzalez-Rodriguez ◽  
Jose L. Ramon ◽  
Vicente Morell ◽  
Gabriel J. Garcia ◽  
Jorge Pomares ◽  
...  
Keyword(s):  
Real Time ◽  
Upper Limb ◽  
Closed Loop ◽  
Fine Tuning ◽  
Vibrotactile Feedback ◽  
Loop Control ◽  
Myoelectric Prostheses ◽  
Amplitude Level ◽  
Real Time Application ◽  
Selection Of

The main goal of this study is to evaluate how to optimally select the best vibrotactile pattern to be used in a closed loop control of upper limb myoelectric prostheses as a feedback of the exerted force. To that end, we assessed both the selection of actuation patterns and the effects of the selection of frequency and amplitude parameters to discriminate between different feedback levels. A single vibrotactile actuator has been used to deliver the vibrations to subjects participating in the experiments. The results show no difference between pattern shapes in terms of feedback perception. Similarly, changes in amplitude level do not reflect significant improvement compared to changes in frequency. However, decreasing the number of feedback levels increases the accuracy of feedback perception and subject-specific variations are high for particular participants, showing that a fine-tuning of the parameters is necessary in a real-time application to upper limb prosthetics. In future works, the effects of training, location, and number of actuators will be assessed. This optimized selection will be tested in a real-time proportional myocontrol of a prosthetic hand.

Closed-Loop Vibratory Haptic Feedback in Upper-Limb Prosthetic Users

2014 ◽  
Vol 26 (3) ◽  
pp. 120-127 ◽  
Author(s):  
Pravin Chaubey ◽  
Teri Rosenbaum-Chou ◽  
Wayne Daly ◽  
David Boone
Keyword(s):  
Upper Limb ◽  
Closed Loop ◽  
Haptic Feedback

Robot-Assisted Upper-Limb Fuzzy Adaptive Passive Movement Training and Clinical Experiment

2011 ◽  
Vol 130-134 ◽  
pp. 227-231 ◽  
Author(s):  
Li Zheng Pan ◽  
Ai Guo Song ◽  
Guo Zheng Xu
Keyword(s):  
Upper Limb ◽  
Closed Loop ◽  
Control Method ◽  
Passive Movement ◽  
Rehabilitation Robot ◽  
Joint Movement ◽  
Robot Assisted ◽  
Movement Training ◽  
Cord Injury ◽  
Fuzzy Adaptive

In the effort to make robot-assisted upper limb passive movement training effective for neurologic injuries suffered from stroke and spinal cord injury (SCI), a new fuzzy adaptive closed-loop supervisory control method for passive joint movement training is proposed. Firstly, high-level supervisory controller for the desired passive range of motion (PROM) is designed based on the impaired limb’s joint motion recovery, and then low-level closed-loop position tracking controller is presented to drive the robot stably and smoothly to stretch the impaired limb to move along the predefined trajectory. The suggested strategy was applied to the four degrees of freedom (DOF) Whole Arm Manipulator (WAM) rehabilitation robot to evaluate its performance. Experimental results carried out on the 4-DOF WAM rehabilitation robot show the effectiveness and potentialities of the fuzzy adaptive passive movement control in clinical application.

scholarly journals Neuromimetic Event-Based Detection for Closed-Loop Tactile Feedback Control of Upper Limb Prostheses

2016 ◽  
Vol 9 (2) ◽  
pp. 196-206 ◽  
Author(s):  
Luke Osborn ◽  
Rahul R. Kaliki ◽  
Alcimar B. Soares ◽  
Nitish V. Thakor
Keyword(s):  
Feedback Control ◽  
Upper Limb ◽  
Closed Loop ◽  
Tactile Feedback ◽  
Upper Limb Prostheses ◽  
Event Based

scholarly journals A closed-loop BCI system for rehabilitation of the hemiplegic upper-limb: A performance study of the systems ability to detect intention of movement

2016 ◽  
Vol 59 ◽  
pp. e88 ◽  
Author(s):  
Juliette Hurtier ◽  
Leh Van Dokkum ◽  
Sami Dalhoumi ◽  
Aodhan Coffey ◽  
Stéphane Perrey ◽  
...  
Keyword(s):  
Upper Limb ◽  
Closed Loop ◽  
Performance Study ◽  
Bci System ◽  
A Performance

Refinement of the upper limb joint kinematics and dynamics using a subject-specific closed-loop forearm model

2014 ◽  
Vol 33 (4) ◽  
pp. 413-438 ◽  
Author(s):  
Maria Laitenberger ◽  
Maxime Raison ◽  
Delphine Périé ◽  
Mickael Begon
Keyword(s):  
Upper Limb ◽  
Closed Loop ◽  
Joint Kinematics ◽  
Kinematics And Dynamics ◽  
Subject Specific

Reflex Responses in Upper Limb Muscles to Cutaneous Stimuli

1993 ◽  
Vol 20 (04) ◽  
pp. 271-278 ◽  
Author(s):  
R. Chen
Keyword(s):  
Stimulus Intensity ◽  
Upper Limb ◽  
Healthy Subjects ◽  
Voluntary Contraction ◽  
Cutaneous Reflexes ◽  
Focal Lesions ◽  
Normal Ranges ◽  
Conduction Velocities ◽  
Limb Muscles ◽  
Biphasic Responses

ABSTRACT:Cutaneous reflexes in the upper limb were elicited by stimulating digital nerves and recorded by averaging rectified EMG from proximal and distal upper limb muscles during voluntary contraction. Distal muscles often showed a triphasic response: an inhibition with onset about 50 ms (Il) followed by a facilitation with onset about 60 ms (E2) followed by another inhibition with onset about 80 ms (12). Proximal muscles generally showed biphasic responses beginning with facilitation or inhibition with onset at about 40 ms. Normal ranges for the amplitude of these components were established from recordings on 22 arms of 11 healthy subjects. An attempt was made to determine the alterent fibers responsible for the various components by varying the stimulus intensity, by causing ischemic block of larger fibers and by estimating the afferent conduction velocities. The central pathways mediating these reflexes were examined by estimating central delays and by studying patients with focal lesions

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