Works (49)
Updated: November 12th, 2024 15:59
2023 journal article
Ankle Torque Estimation With Motor Unit Discharges in Residual Muscles Following Lower-Limb Amputation
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 31, 4821–4830.
author keywords: Amputation; EMG; motor unit; neural-machine interface; prosthesis control
TL;DR:
Results suggest MUDrive significantly outperforms EMG and ND methods in muscles of NON, as well as both intact and residual muscles of AMP, and integrating MU discharges with modeled biomechanical outputs may provide a more accurate torque control signal than direct EMG control of assistive, lower-limb devices.
(via Semantic Scholar)
open access via ieeexplore.ieee.org (publisher PDF)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: March 11, 2024
2023 journal article
Optimized Model Selection for Concurrent Decoding of Finger Kinetics and Kinematics
IEEE ACCESS, 11, 17348–17358.
author keywords: Assistive technologies; Kinematics; Fingerprint recognition; Electromyography; Force; Predictive models; Haptic interfaces; Finger force; finger kinematics; hand function; motor unit
TL;DR:
Three MU-based finger kinetic and kinematic prediction models are evaluated to identify the optimal models for concurrent and continuous finger force and joint angle estimation, indicating that firing information at the population level may mask critical information of individual MU firings.
(via Semantic Scholar)
Source: Web Of Science
Added: March 20, 2023
2022 journal article
A generic neural network model to estimate populational neural activity for robust neural decoding
COMPUTERS IN BIOLOGY AND MEDICINE, 144.
author keywords: Neural networks; Hand function; Neural decoding; Motor unit; Finger force
MeSH headings : Electromyography / methods; Fingers / physiology; Humans; Motor Neurons / physiology; Muscle, Skeletal; Neural Networks, Computer
TL;DR:
A novel generic neural network model that can continuously predict finger forces based on decoded populational motoneuron firing activities is developed that provides a generic and efficient continuous neural decoding approach for real-time and robust human-robot interactions.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: Web Of Science
Added: June 27, 2022
2022 journal article
A simplified model for whole-body angular momentum calculation
MEDICAL ENGINEERING & PHYSICS, 111.
author keywords: Angular momentum; Gait stability; Wearable system; Rigid body model
MeSH headings : Humans; Biomechanical Phenomena; Gait; Lower Extremity; Amputation, Surgical; Motion
TL;DR:
This study developed a simplified rigid body model by merging connected body segments to reduce the number of body segments, which need to be monitored, and demonstrated that the Lbody could be estimated by a seven-segment model accurately for both people with and without lower extremity amputation.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: February 27, 2023
2022 journal article
Concurrent and Continuous Prediction of Finger Kinetics and Kinematics via Motoneuron Activities
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 70(6), 1911–1920.
author keywords: Neural decoding; hand function; isometric force; dynamic movement
MeSH headings : Kinetics; Biomechanical Phenomena; Fingers / physiology; Hand; Electromyography / methods; Motor Neurons / physiology; Movement; Muscle, Skeletal / physiology
TL;DR:
A continuous neural decoding approach that can concurrently predict fingertip forces and joint angles of multiple fingers in real-time can enable intuitive interactions with assistive robotic hands, and allow the performance of dexterous hand skills involving both force control tasks and dynamic movement control tasks.
(via Semantic Scholar)
Source: Web Of Science
Added: July 31, 2023
2022 journal article
Finger Force Estimation Using Motor Unit Discharges Across Forearm Postures
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 69(9), 2767–2775.
Contributors: N. Rubin n, Y. Zheng *, H. Huang n & n
author keywords: Electromyography; Force; Fingers; Firing; Muscles; Electrodes; Decoding; Biosignal processing; Finger force estimation; Forearm posture; Motor unit decomposition; Neural decoding
MeSH headings : Electromyography / methods; Fingers; Forearm; Humans; Isometric Contraction; Muscle, Skeletal; Posture; Upper Extremity
TL;DR:
The results suggest that MU firings can be extracted reliably with little influence from forearm posture, highlighting its potential as an alternative decoding scheme for robust and continuous control of assistive devices.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: September 6, 2022
2022 journal article
Offline Evaluation Matters: Investigation of the Influence of Offline Performance on Real-Time Operation of Electromyography-Based Neural-Machine Interfaces
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 31, 680–689.
Contributors: R. Hinson n, J. Berman n, W. Filer *, D. Kamper n, n & H. Huang n
author keywords: Electromyography; Real-time systems; Decoding; Task analysis; Artificial neural networks; Wrist; Measurement; machine learning; neural-machine interface; offline analysis; real-time performance
TL;DR:
The use and validity of offline analyses for optimization of NMIs in myoelectric control research and development are supported and significant improvements in each real-time task evaluation metric were observed.
(via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: March 15, 2023
2022 journal article
Resembled Tactile Feedback for Object Recognition Using a Prosthetic Hand
IEEE ROBOTICS AND AUTOMATION LETTERS, 7(4), 10977–10984.
author keywords: Tactile feedback; prosthetic control; object recognition; transcutaneous nerve stimulation
TL;DR:
The results showed that participants could gauge the onset timing of tactile feedback to discern object shape and size and found that the position-controller led to a greater recognition accuracy of object size compared with velocity-control, potentially due to supplemental joint position information from muscle activation level.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: September 6, 2022
2022 journal article
Toward Safe Wearer-Prosthesis Interaction: Evaluation of Gait Stability and Human Compensation Strategy Under Faults in Robotic Transfemoral Prostheses
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 30, 2773–2782.
Contributors: I. Lee n, M. Liu n, M. Lewek n, n, W. Filer n & H. Huang n
author keywords: Prosthetics; Robots; Knee; Legged locomotion; IP networks; Impedance; Training; Gait stability; machine fault; powered knee prosthesis; transfemoral amputee; user-prosthesis interaction
MeSH headings : Amputees; Artificial Limbs; Biomechanical Phenomena; Gait; Humans; Prosthesis Design; Robotic Surgical Procedures; Robotics; Walking
TL;DR:
The results showed that the error tolerable bound is dependent on the gait phase and the direction of torque change, and may assist the future design of an auto-tuning algorithm, volitionally-controlled powered prosthetic legs, and training of gait stability.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
16. Peace, Justice and Strong Institutions
(OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 31, 2022
2022 journal article
Ultrasoft Porous 3D Conductive Dry Electrodes for Electrophysiological Sensing and Myoelectric Control
Advanced Materials Technologies, 7(10).
author keywords: biopotential; dry electrodes; electrocardiogram; electroencephalogram; electromyogram; nanomaterials
TL;DR:
Based on the muscle activities captured by the electrodes and a musculoskeletal model, electromyogram‐based neural–machine interfaces are realized, illustrating the great potential for prosthesis control, neurorehabilitation, and virtual reality.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: May 31, 2022
2021 journal article
Closed-loop control of a prosthetic finger via evoked proprioceptive information
JOURNAL OF NEURAL ENGINEERING, 18(6).
author keywords: prosthetic control; bidirectional neural-machine interface; vibratory stimulation; velocity control; position control
MeSH headings : Arm / physiology; Artificial Limbs; Feedback, Sensory / physiology; Hand / physiology; Humans; Proprioception / physiology
TL;DR:
The findings suggest that closed-loop control of a prosthetic device can be achieved using non-invasive evoked proprioceptive feedback delivered to intact participants, and the evoked sensory information was integrated during myoelectric control effectively for both control strategies.
(via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 7, 2022
2021 article
Common Neural Input within and across Lower Limb Muscles: A Preliminary Study
2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC), pp. 6683–6686.
MeSH headings : Electromyography; Lower Extremity; Muscle, Skeletal
TL;DR:
This preliminary study characterized levels of common inputs to MUs in three muscle groups: MUs within a muscle, between bilateral homologous pairs, and between agonist/antagonist muscle pairs.
(via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: January 7, 2022
2021 journal article
Concurrent Prediction of Finger Forces Based on Source Separation and Classification of Neuron Discharge Information
INTERNATIONAL JOURNAL OF NEURAL SYSTEMS, 31(06).
author keywords: Neurosignal processing; finger force prediction; hand function; motor unit; neural interface
MeSH headings : Electromyography; Fingers; Humans; Motor Neurons / physiology; Muscle, Skeletal
TL;DR:
This work developed a neural decoding technique that allowed continuous and concurrent prediction of forces of different fingers based on spinal motoneuron firing information, and demonstrated the possibility of classifying motoneurons for different fingers, which significantly alleviated the cross-talk issue of EMG recordings from neighboring hand muscles.
(via Semantic Scholar)
Source: Web Of Science
Added: June 14, 2021
2021 article
Estimation of Joint Kinematics and Fingertip Forces using Motoneuron Firing Activities: A Preliminary Report
2021 10TH INTERNATIONAL IEEE/EMBS CONFERENCE ON NEURAL ENGINEERING (NER), pp. 1035–1038.
TL;DR:
A novel decoding method that used finger-specific motoneuron firing frequency to estimate joint kinematics and fingertip forces and showed that the MU firing based approach led to smaller prediction errors for both joint angles and forces compared with the conventional EMG amplitude based method.
(via Semantic Scholar)
Source: Web Of Science
Added: August 16, 2021
2021 review
Myoelectric control of robotic lower limb prostheses: a review of electromyography interfaces, control paradigms, challenges and future directions
[Review of ]. JOURNAL OF NEURAL ENGINEERING, 18(4).
Contributors: A. Fleming n, N. Stafford *, S. Huang n, n, D. Ferris * & H. Huang n
author keywords: robotic lower limb protheses; neural-machine interface; EMG; gait and balance; human motor control
MeSH headings : Amputees; Artificial Limbs; Electromyography; Humans; Locomotion; Muscle, Skeletal; Robotic Surgical Procedures
TL;DR:
This review highlights the promise of EMG control for enabling new functionalities in robotic lower limb prostheses, as well as the existing challenges, knowledge gaps, and opportunities on this research topic from human motor control and clinical practice perspectives.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 16, 2021
2021 journal article
Object Recognition via Evoked Sensory Feedback during Control of a Prosthetic Hand
IEEE ROBOTICS AND AUTOMATION LETTERS, 7(1), 207–214.
author keywords: Haptic and proprioceptive sensation; transcutaneous nerve stimulation; vibrotactile stimulation; stiffness recognition; size recognition
TL;DR:
The findings show that evoked somatosensory feedback in a non-invasive manner can facilitate closed-loop control of the prosthetic hand and allowed for simultaneous recognition of different object properties.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: November 15, 2021
2021 article
Perception of Static Position and Kinesthesia of the Finger using Vibratory Stimulation
2021 10TH INTERNATIONAL IEEE/EMBS CONFERENCE ON NEURAL ENGINEERING (NER), pp. 1087–1090.
TL;DR:
The outcomes suggest that vibratory stimulus can inform subjects of static and dynamic aspects of finger proprioception and can be implemented to improve outcomes in clinical populations with sensory deficits, and to enhance user experience when users interact with assistive devices.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 16, 2021
2021 journal article
Static and dynamic proprioceptive recognition through vibrotactile stimulation
JOURNAL OF NEURAL ENGINEERING, 18(4).
author keywords: somatosensory feedback; proprioception; vibrotactile stimulation; arm function; sensory substitution
MeSH headings : Feedback, Sensory; Forearm; Goals; Humans; Movement; Proprioception
TL;DR:
The outcomes suggest that information pertaining to static and dynamic aspects of proprioception can be accurately delivered using an array of vibrotactors and could be used to potentially evaluate the sensorimotor integration processes during human–machine interactions, and to improve sensory feedback in clinical populations with somatosensory impairments.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: July 19, 2021
2021 article
Virtual Reality for Evaluating Prosthetic Hand Control Strategies: A Preliminary Report
2021 43RD ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY (EMBC), pp. 6263–6266.
MeSH headings : Gestures; Hand; Motion; Quality of Life; Virtual Reality
TL;DR:
This work created a virtual prosthetic control environment that enables rich user interactions and dexterity evaluation and demonstrates actuation of the prosthetic hand through decoded EMG signal streaming, hand tracking, and the use of a VR controller.
(via Semantic Scholar)
Source: Web Of Science
Added: April 25, 2022
2020 journal article
Activation of Superficial and Deep Finger Flexors Through Transcutaneous Nerve Stimulation
IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS, 25(7), 2575–2582.
author keywords: Muscles; Electrodes; Ultrasonic imaging; Iron; Kinematics; Fingers; Electronics packaging; Functional Electrical Stimulation; Nerve Stimulation; Muscle Activation; Ultrasound Image Deformation
MeSH headings : Biomechanical Phenomena; Electromyography; Fingers; Humans; Muscle Contraction; Muscle, Skeletal; Transcutaneous Electric Nerve Stimulation
TL;DR:
The results showed that the nerve-bundle stimulation technique can activate the deep extrinsic finger flexors, which are typically not accessible via traditional surface FES.
(via Semantic Scholar)
Source: Web Of Science
Added: August 16, 2021
2020 journal article
Automatic Detection of Contracting Muscle Regions via the Deformation Field of Transverse Ultrasound Images: A Feasibility Study
ANNALS OF BIOMEDICAL ENGINEERING, 49(1), 354–366.
author keywords: Transverse ultrasound imaging; Muscle contraction; Muscle function; Finger muscle; Deformation estimation
MeSH headings : Algorithms; Electromyography; Feasibility Studies; Finger Joint / diagnostic imaging; Finger Joint / physiology; Humans; Male; Muscle Contraction; Muscle, Skeletal / diagnostic imaging; Muscle, Skeletal / physiology; Ultrasonography
TL;DR:
A novel framework was developed to detect contracting muscle regions based on the deformation field of transverse ultrasound images that can automatically detect the regions of contracting muscle, and could potentially serve as a tool to assess the functions of a group of muscles concurrently.
(via Semantic Scholar)
Source: Web Of Science
Added: July 27, 2020
2020 journal article
Buckle-Delamination-Enabled Stretchable Silver Nanowire Conductors
ACS APPLIED MATERIALS & INTERFACES, 12(37), 41696–41703.
author keywords: stretchable conductor; silver nanowire; buckling; buckle-delamination; wrinkling; thermochromic
TL;DR:
A theoretical model on the buckle-delamination structure is developed to predict the geometrical evolution, and an integrated silver nanowire/elastomer sensing module and a stretchable thermochromic device are developed to demonstrate the utility of the stretchable conductor.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: October 12, 2020
2020 journal article
Elicited upper limb motions through transcutaneous cervical spinal cord stimulation
JOURNAL OF NEURAL ENGINEERING, 17(3).
author keywords: transcutaneous electrical stimulation; spinal cord stimulation; upper extremity kinematics; arm function; hand function
MeSH headings : Hand; Humans; Muscle, Skeletal; Range of Motion, Articular; Spinal Cord; Spinal Cord Stimulation; Upper Extremity
TL;DR:
The results revealed that distal and proximal joint movements can be elicited either independently or synergistically, and the feasibility of the spinal cord stimulation technique in eliciting functional movements of the upper limb was demonstrated.
(via Semantic Scholar)
Source: Web Of Science
Added: June 29, 2020
2020 journal article
Object Shape and Surface Topology Recognition Using Tactile Feedback Evoked through Transcutaneous Nerve Stimulation
IEEE TRANSACTIONS ON HAPTICS, 13(1), 152–158.
author keywords: Shape recognition; surface topology; tactile sensation; transcutaneous nerve stimulation
MeSH headings : Adult; Feedback, Sensory / physiology; Female; Fingers / physiology; Humans; Male; Median Nerve / physiology; Recognition, Psychology / physiology; Touch / physiology; Touch Perception / physiology; Transcutaneous Electric Nerve Stimulation; Ulnar Nerve / physiology; Young Adult
TL;DR:
It is suggested that tactile feedback evoked from transcutaneous nerve stimulation allows the recognition of object shape and surface topology, which may help improve object manipulation and promote fine control of a prosthetic hand.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: April 14, 2020
2019 journal article
Elicited Finger and Wrist Extension Through Transcutaneous Radial Nerve Stimulation
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 27(9), 1875–1882.
author keywords: Transcutaneous electrical nerve stimulation; radial nerve stimulation; hand function; hand opening; wrist extension
MeSH headings : Adult; Biomechanical Phenomena; Elbow; Electromyography; Female; Fingers / physiology; H-Reflex / physiology; Hand; Healthy Volunteers; Humans; Male; Motor Neurons / physiology; Muscle Fatigue; Muscle Fibers, Skeletal / physiology; Radial Nerve / physiology; Transcutaneous Electric Nerve Stimulation / methods; Wrist / physiology; Young Adult
TL;DR:
This paper investigated the feasibility of eliciting various hand opening and wrist extension movement patterns through a transcutaneous electrical stimulation array, which targeted the proximal segment of the radial nerve bundle proximal to the elbow.
(via Semantic Scholar)
Source: Web Of Science
Added: October 7, 2019
2019 journal article
Evoked Haptic Sensation in the Hand With Concurrent Non-Invasive Nerve Stimulation
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 66(10), 2761–2767.
Contributors: L. Vargas n, G. Whitehouse n, H. Huang n , Y. Zhu n & n
author keywords: Electrical stimulation; haptic sensation; transcutaneous nerve stimulation; embodiment
MeSH headings : Adult; Amputees; Arm / innervation; Artificial Limbs; Female; Humans; Male; Sensory Thresholds / physiology; Transcutaneous Electric Nerve Stimulation
TL;DR:
The results indicated that the haptic sensations at different regions of the hand can be constructed by combining the response from multiple stimulation trains directly, and the interference between stimulations were minimal.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 14, 2019
2019 journal article
Finger Joint Angle Estimation Based on Motoneuron Discharge Activities
IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS, 24(3), 760–767.
author keywords: Biosignal processing; joint angle prediction; motor unit; finger movement; motor unit decomposition
MeSH headings : Adult; Algorithms; Biomechanical Phenomena / physiology; Electromyography / methods; Female; Finger Joint / physiology; Humans; Male; Motor Neurons / physiology; Signal Processing, Computer-Assisted; Young Adult
TL;DR:
The findings indicated that the neural-drive-based interface was a promising approach to reliably predict individual finger kinematics, especially during fast movements.
(via Semantic Scholar)
Source: Web Of Science
Added: March 30, 2020
2019 journal article
Independent component analysis based algorithms for high-density electromyogram decomposition: Experimental evaluation of upper extremity muscles
COMPUTERS IN BIOLOGY AND MEDICINE, 108, 42–48.
author keywords: Biosignal processing; Independent component analysis; Upper extremity muscles
MeSH headings : Algorithms; Electromyography; Female; Humans; Male; Muscle, Skeletal / physiopathology; Signal Processing, Computer-Assisted; Upper Extremity
TL;DR:
Through an experimental evaluation of the performance of three different independent component analysis (ICA)-based decomposition algorithms on high-density EMG signals, the outcomes provide information regarding the utility of these algorithms and the motor unit filter criteria involving EMGs of upper extremity muscles.
(via Semantic Scholar)
Source: Web Of Science
Added: July 1, 2019
2019 journal article
Independent component analysis based algorithms for high-density electromyogram decomposition: Systematic evaluation through simulation
COMPUTERS IN BIOLOGY AND MEDICINE, 109, 171–181.
author keywords: Biosignal processing; Electromyogram; Source separation; Independent component analysis; RobustICA; Simulation
MeSH headings : Algorithms; Electromyography; Humans; Muscle Contraction / physiology; Muscle, Skeletal / physiology; Pattern Recognition, Automated; Signal Processing, Computer-Assisted
TL;DR:
The RobustICA consistently showed high decomposition accuracy among the three algorithms under a variety of signal conditions, especially with a low signal quality and varying contraction levels, which provides guidance on selecting particular decomposition algorithms based on specific applications with different requirement on the accuracy/yield of the decomposition.
(via Semantic Scholar)
Source: Web Of Science
Added: July 8, 2019
2019 journal article
Interference Removal From Electromyography Based on Independent Component Analysis
IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING, 27(5), 887–894.
author keywords: Biosignal processing; independent component analysis; motion artifacts; noise reduction; power line noise
MeSH headings : Adult; Algorithms; Artifacts; Electromyography / methods; Electromyography / statistics & numerical data; Female; Fingers / innervation; Fingers / physiology; Hand / innervation; Hand / physiology; Humans; Male; Motor Neurons / physiology; Muscle Fibers, Skeletal / physiology; Muscle, Skeletal / physiology; Principal Component Analysis; Signal Processing, Computer-Assisted; Signal-To-Noise Ratio; Young Adult
TL;DR:
The method showed a minimal distortion of the denoised EMG amplitude and frequency and a higher yield of decomposed motor units and can benefit macro level EMG analysis and micro level motor unit analysis.
(via Semantic Scholar)
Source: Web Of Science
Added: May 28, 2019
2019 journal article
Muscle activation pattern elicited through transcutaneous stimulation near the cervical spinal cord
JOURNAL OF NEURAL ENGINEERING, 17(1).
author keywords: transcutaneous electrical stimulation; spinal cord; hand function; arm function; muscle activation
MeSH headings : Adult; Arm / innervation; Arm / physiology; Cervical Cord / physiology; Electromyography / methods; Humans; Male; Muscle Contraction / physiology; Muscle, Skeletal / innervation; Muscle, Skeletal / physiology; Transcutaneous Electric Nerve Stimulation / methods; Young Adult
TL;DR:
The tsCSC approach can improve the muscle activation pattern during electrical stimulation with a possible involvement of the spinal and supraspinal pathways, which can facilitate applications on rehabilitation/assistance of individuals with impaired motor function.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
Source: Web Of Science
Added: June 22, 2020
2019 journal article
Prediction of Individual Finger Forces Based on Decoded Motoneuron Activities
ANNALS OF BIOMEDICAL ENGINEERING, 47(6), 1357–1368.
author keywords: EMG signal processing; Motor unit decomposition; Finger force; Hand function; Muscle activity
MeSH headings : Adult; Computer Simulation; Electromyography; Female; Fingers / innervation; Fingers / physiology; Humans; Male; Models, Neurological; Motor Neurons / physiology; Young Adult
TL;DR:
The experimental results indicate that the neural drive estimation based on motoneuron firing activities can be used as a reliable neural-machine interface signal involving individual fingers, however, real-time implementation of this approach is needed for future clinical translation.
(via Semantic Scholar)
Source: Web Of Science
Added: May 28, 2019
2019 article
Prediction of Individual Finger Forces Based on Decoded Motoneuron Activities (vol 47, pg 1357, 2019)
Dai, C., Cao, Y., & Hu, X. (2019, July). ANNALS OF BIOMEDICAL ENGINEERING, Vol. 47, pp. 1688–1688.
TL;DR:
The R2 heat map as a function of the number of motor units and the accuracy is illustrated below and the root mean squared error (RMSE) is illustrated.
(via Semantic Scholar)
Source: Web Of Science
Added: June 17, 2019
2019 journal article
Prolonged time course of population excitatory postsynaptic potentials in motoneurons of chronic stroke survivors
JOURNAL OF NEUROPHYSIOLOGY, 122(1), 176–183.
author keywords: double stimulation; EPSP time course; reflex; spasticity; stroke
MeSH headings : Adult; Aged; Excitatory Postsynaptic Potentials; Female; H-Reflex; Humans; Male; Middle Aged; Motor Neurons / physiology; Reaction Time; Stroke / physiopathology
TL;DR:
It is proposed that one potential mechanism for hyperexcitability of spastic motoneurons in chronic stroke survivors may be associated with this prolongation of the Ia EPSP time-course, and the subthreshold double-stimulation approach could provide a noninvasive tool for quantifying the time of EPSPs in both healthy and pathological conditions.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
Source: Web Of Science
Added: August 12, 2019
2019 journal article
Real-time isometric finger extension force estimation based on motor unit discharge information
JOURNAL OF NEURAL ENGINEERING, 16(6).
author keywords: hand function; finger force estimation; isometric contraction; neural interface; motor unit firing
MeSH headings : Adult; Computer Systems; Electromyography / instrumentation; Electromyography / methods; Female; Fingers / physiology; Humans; Isometric Contraction / physiology; Male; Motor Neurons / physiology; Recruitment, Neurophysiological / physiology; Young Adult
TL;DR:
The neural-drive method on real-time finger force estimation was more accurate over time compared with the conventional EMG-amplitude method during prolonged muscle contractions, and can potentially offer a more accurate and robust neural interface technique for reliable neural-machine interactions based on MU pool discharge information.
(via Semantic Scholar)
Source: Web Of Science
Added: January 6, 2020
2018 journal article
A Novel Finger Kinematic Tracking Method Based on Skin-Like Wearable Strain Sensors
IEEE SENSORS JOURNAL, 18(7), 3010–3015.
author keywords: Wearable sensors; strain sensors; finger kinematic tracking; stroke; hand function impairment
TL;DR:
The application of silver nanowire-based capacitive strain sensors for finger kinematic tracking is demonstrated and validated and accurate hand utility information on the impaired hand of stroke survivors can be acquired in a continuous and unobtrusive manner.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018
2018 journal article
Delayed fatigue in finger flexion forces through transcutaneous nerve stimulation
JOURNAL OF NEURAL ENGINEERING, 15(6).
author keywords: muscle fatigue; neuromuscular electrical stimulation; nerve stimulation; hand function; muscle activation pattern
MeSH headings : Adult; Algorithms; Electrodes; Electromyography; Fatigue / prevention & control; Female; Fingers / physiology; Healthy Volunteers; Humans; Male; Muscle Contraction / physiology; Muscle Fatigue; Muscle Fibers, Skeletal / physiology; Muscle, Skeletal / physiology; Transcutaneous Electric Nerve Stimulation / methods; Young Adult
TL;DR:
The findings demonstrated that the stimulation of the proximal nerve bundles can elicit sustained force output and delayed decrease in the rate of force decline, potentially due to a spatially distributed activation of the muscle fibers, compared with the traditional motor point stimulation.
(via Semantic Scholar)
Source: Web Of Science
Added: October 16, 2018
2018 journal article
Estimation of Muscle Force Based on Neural Drive in a Hemispheric Stroke Survivor
FRONTIERS IN NEUROLOGY, 9.
author keywords: motor unit decomposition; high-density surface electromyogram; neural drive; stroke; neural control; muscle weakness
TL;DR:
The results showed that the neural-drive-based approach can better predict the force output, quantified by lower estimation errors and higher correlations with the muscle force, compared with the myoelectric-based estimation.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
Source: Web Of Science
Added: August 6, 2018
2018 journal article
Evoked haptic sensations in the hand via non-invasive proximal nerve stimulation
JOURNAL OF NEURAL ENGINEERING, 15(4).
Contributors: H. Huang n , H. Shin n, Z. Watkins n, Y. Zhu n & n
author keywords: sensory feedback; electrical stimulation; peripheral nerve stimulation; haptic sensations
MeSH headings : Adult; Amputees / rehabilitation; Female; Hand / innervation; Hand / physiology; Humans; Male; Touch Perception / physiology; Transcutaneous Electric Nerve Stimulation / methods; Young Adult
TL;DR:
The elicitation of haptic sensations in the phantom hand of an amputee is a significant step in the development of the stimulation method, and provides insight into the future adaptation and implementation of prostheses with non-invasive sensory feedback to the users.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018
2018 journal article
Extracting and Classifying Spatial Muscle Activation Patterns in Forearm Flexor Muscles Using High-Density Electromyogram Recordings
INTERNATIONAL JOURNAL OF NEURAL SYSTEMS, 29(1).
author keywords: Finger flexion; high-density EMG; forearm flexor muscles; flexor digitorum superficialis; muscle compartment; pattern recognition; flexor activation
MeSH headings : Adult; Electromyography / methods; Fingers / physiology; Forearm / physiology; Humans; Muscle, Skeletal / physiology; Pattern Recognition, Automated; Signal Processing, Computer-Assisted
TL;DR:
The findings indicate that the partial overlapping of neural activation can limit accurate identification of specific finger movement based on limited recordings and s EMG features, and that HD sEMG recordings capturing detailed spatial activation patterns at both macro- and micro-levels are needed.
(via Semantic Scholar)
Source: Web Of Science
Added: February 4, 2019
2018 journal article
Improved muscle activation using proximal nerve stimulation with subthreshold current pulses at kilohertz-frequency
JOURNAL OF NEURAL ENGINEERING, 15(4).
author keywords: transcutaneous electrical nerve stimulation; electromyography; motor unit action potential; subthreshold stimulation; kilohertz-frequency
MeSH headings : Action Potentials / physiology; Adult; Electromyography / methods; Female; Humans; Male; Median Nerve / physiology; Muscle Contraction / physiology; Muscle, Skeletal / innervation; Muscle, Skeletal / physiology; Transcutaneous Electric Nerve Stimulation / methods; Ulnar Nerve / physiology; Young Adult
TL;DR:
The findings indicated that different nerve fibers were recruited asynchronously through summations of different numbers of subthreshold depolarizations in the HF mode, which was capable of activating the nerve fibers in a less synchronized way, which is more similar to the physiological activation pattern.
(via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018
2018 journal article
Muscle Fatigue Post-stroke Elicited From Kilohertz-Frequency Subthreshold Nerve Stimulation
FRONTIERS IN NEUROLOGY, 9.
author keywords: transcutaneous electrical nerve stimulation; electromyography; muscle fatigue; stroke; kilohertz-frequency
TL;DR:
The results indicated that the HF nerve stimulation technique can reduce muscle fatigue in stroke survivors by maintaining a higher efficiency of muscle activations compared with the LF stimulation.
(via Semantic Scholar)
Source: Web Of Science
Added: December 17, 2018
2018 journal article
Reduced muscle fatigue using kilohertz-frequency subthreshold stimulation of the proximal nerve
JOURNAL OF NEURAL ENGINEERING, 15(6).
author keywords: transcutaneous electrical nerve stimulation; finger function; electromyography; muscle fatigue; kilohertz frequency; functional electrical stimulation
MeSH headings : Adult; Electric Stimulation / methods; Electromyography; Female; Fingers / physiology; Healthy Volunteers; Humans; Male; Median Nerve / physiology; Motor Neurons / physiology; Muscle Fatigue / physiology; Muscle Fibers, Skeletal / physiology; Peripheral Nerves / physiology; Transcutaneous Electric Nerve Stimulation; Ulnar Nerve / physiology; Young Adult
TL;DR:
The findings revealed that the subthreshold kilohertz nerve stimulation can induce temporally and spatially dispersed activation of different motor units with more efficient activation patterns and can potentially reduce muscle fatigue.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
Source: Web Of Science
Added: October 16, 2018
2017 journal article
Altered Motor Unit Discharge Coherence in Paretic Muscles of Stroke Survivors
FRONTIERS IN NEUROLOGY, 8.
author keywords: motor unit; coherence; stroke; synchronization; surface electromyogram
TL;DR:
The results indicated that the common synaptic input to motor neurons increased on the paretic side, and the increased common input can originate from changes at multiple levels, including spinal and supraspinal levels following a stroke.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(OpenAlex)
Source: Web Of Science
Added: August 6, 2018
2017 journal article
Exploration of Hand Grasp Patterns Elicitable Through Non-Invasive Proximal Nerve Stimulation
SCIENTIFIC REPORTS, 7.
MeSH headings : Adult; Electric Stimulation; Female; Fingers / physiology; Hand / physiology; Hand Strength / physiology; Humans; Male; Muscle, Skeletal / physiology; Range of Motion, Articular / physiology; Young Adult
TL;DR:
This study provides initial evidence on the feasibility of a proximal nerve stimulation technique in controlling a variety of finger movements and grasp patterns and could also be developed into a rehabilitative/assistive tool that can result in flexible movements of the fingers.
(via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018
2017 journal article
Motor Unit Activity during Fatiguing Isometric Muscle Contraction in Hemispheric Stroke Survivors
FRONTIERS IN HUMAN NEUROSCIENCE, 11.
author keywords: motor unit; stroke; isometric fatigue; surface EMG decomposition; motor unit action potential; motor unit firing rate
TL;DR:
Evidence of both central and peripheral fatigue at the MU level during isometric fatiguing contraction for the first time in stroke survivors is presented, which may suggest that central mechanisms observed here as changes in firing rate are the dominant processes leading to task failure on the affected side.
(via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018
2017 journal article
Origins of Common Neural Inputs to Different Compartments of the Extensor Digitorum Communis Muscle
SCIENTIFIC REPORTS, 7.
MeSH headings : Adult; Central Nervous System / physiology; Electromyography; Female; Fingers / innervation; Humans; Male; Muscle, Skeletal / innervation; Young Adult
TL;DR:
Overall, the common input shared across different fingers are found to be at low to moderate levels, in comparison with the total input, which allows dexterous control of individual digits with some degree of coordinated control of multiple digits.
(via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018
2017 journal article
Relative contribution of different altered motor unit control to muscle weakness in stroke: a simulation study
JOURNAL OF NEURAL ENGINEERING, 15(1).
author keywords: motor unit simulation; stroke; muscle weakness; fatigue
MeSH headings : Computer Simulation; Humans; Muscle Weakness / diagnosis; Muscle Weakness / etiology; Muscle Weakness / physiopathology; Recruitment, Neurophysiological / physiology; Sensory Thresholds / physiology; Stroke / complications; Stroke / diagnosis; Stroke / physiopathology
TL;DR:
It is found that altered control of MUs alone, as simulated in this study, can lead to a substantial reduction in muscle force generation in stroke survivors.
(via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018
2016 journal article
Muscle fatigue increases beta-band coherence between the firing times of simultaneously active motor units in the first dorsal interosseous muscle
JOURNAL OF NEUROPHYSIOLOGY, 115(6), 2830–2839.
author keywords: motor unit coherence; isometric fatigue; intramuscular coherence; beta-band coherence; short-term synchronization
MeSH headings : Electromyography; Female; Fingers / physiology; Humans; Isometric Contraction / physiology; Male; Models, Neurological; Muscle Fatigue / physiology; Muscle, Skeletal / physiology; Periodicity; Volition; Wavelet Analysis
TL;DR:
Simulation results indicated that changes in motoneuron inhibition and firing rates alone could not directly account for increased beta-band coherence postfatigue, and the observed increase is more likely to arise from an increase in the strength of correlated inputs to MUs as the muscle fatigues.
(via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018
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