4.6 Article

Virtual Stiffness: A Novel Biomechanical Approach to Estimate Limb Stiffness of a Multi-Muscle and Multi-Joint System

Related references

Note: Only part of the references are listed.
Article Engineering, Biomedical

Simultaneous control of natural and extra degrees of freedom by isometric force and electromyographic activity in the muscle-to-force null space

Sergio Gurgone et al.

Summary: Muscular null space control is feasible and can be used to control additional virtual or robotic end-effectors. However, decoding of motor commands must be optimized according to individual null space control ability.

JOURNAL OF NEURAL ENGINEERING (2022)

Article Neurosciences

Task space exploration improves adaptation after incompatible virtual surgeries

Denise J. Berger et al.

Summary: Humans have the ability to learn new motor skills by acquiring novel muscle patterns. This study suggests that with sufficient time for task space exploration, humans can learn new muscle synergies required to overcome incompatible virtual surgeries.

JOURNAL OF NEUROPHYSIOLOGY (2022)

Article Chemistry, Analytical

Muscle Co-Contraction Detection in the Time-Frequency Domain

Francesco Di Nardo et al.

Summary: This study proposed a novel approach for muscle co-contraction detection in the time-frequency domain using continuous wavelet transform (CWT). The CWT approach accurately predicted the timing of co-contraction and provided frequency information in the time domain, which is a significant improvement over existing methods.

SENSORS (2022)

Article Computer Science, Artificial Intelligence

Assessment methodology for human-exoskeleton interactions: Kinetic analysis based on muscle activation

Vasco Fanti et al.

Summary: This paper introduces a methodology for evaluating the kinetic effects of exoskeletons based on data collected via EMG and motion capture systems. The method calculates kinetic parameters, such as torque and power, reducing the complexity of experimental apparatus and data analysis. Furthermore, the method combines data from the literature and laboratory, allowing for easy access to statistical analysis.

FRONTIERS IN NEUROROBOTICS (2022)

Proceedings Paper Engineering, Biomedical

A novel model for estimating the endpoint stiffness of a limb

Daniele Borzelli et al.

Summary: This study proposes a novel algorithm to approximate the stiffness exerted by a multi-joint multi-muscle system from muscle activation. The algorithm estimates the stiffness component by calculating the projection of the muscle activation vector onto the null space of the mapping between muscle activation and endpoint force. The results show that this estimation method can serve as an acceptable estimation of the major axis of the stiffness ellipse, especially for low muscle activation.

2022 IEEE INTERNATIONAL SYMPOSIUM ON MEDICAL MEASUREMENTS AND APPLICATIONS (MEMEA 2022) (2022)

Proceedings Paper Engineering, Biomedical

Unconstrained and constrained estimation of a linear EMG-to-force mapping during isometric force generation

Daniele Borzelli et al.

Summary: Estimating the forces exerted by the human operator from muscle activity is crucial for EMG-driven robotic devices. While a linear mapping from EMG to force may be accurate enough for real-time applications, adding anatomical constraints can improve the accuracy. This study compares the performance of two algorithms (unconstrained and constrained) for force estimation from EMG activity.

2022 IEEE INTERNATIONAL SYMPOSIUM ON MEDICAL MEASUREMENTS AND APPLICATIONS (MEMEA 2022) (2022)

Article Multidisciplinary Sciences

Characterization and clinical implications of ankle impedance during walking in chronic stroke

Amanda L. Shorter et al.

Summary: Individuals post-stroke experience persisting gait deficits due to altered joint mechanics, known clinically as spasticity, hypertonia, and paresis. In this study, ankle mechanical impedance was dynamically quantified during walking, revealing decreased stiffness in the paretic ankle during mid-stance, along with inter-limb differences in ankle joint damping strongly predicting walking speed and distance. These findings suggest a potential focus on correcting stance phase mechanics to improve mobility in chronic stroke survivors.

SCIENTIFIC REPORTS (2021)

Article Automation & Control Systems

Adaptive Model-Based Myoelectric Control for a Soft Wearable Arm Exosuit: A New Generation of Wearable Robot Control

Nicola Lotti et al.

IEEE ROBOTICS & AUTOMATION MAGAZINE (2020)

Article Engineering, Biomedical

Voluntary control of wearable robotic exoskeletons by patients with paresis via neuromechanical modeling

Guillaume Durandau et al.

JOURNAL OF NEUROENGINEERING AND REHABILITATION (2019)

Proceedings Paper Engineering, Biomedical

Model-Based Estimation of Ankle Joint Stiffness During Dynamic Tasks: a Validation-Based Approach

Christopher P. Cop et al.

2019 41ST ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC) (2019)

Article Engineering, Biomedical

Robust Real-Time Musculoskeletal Modeling Driven by Electromyograms

Guillaume Durandau et al.

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING (2018)

Review Neurosciences

Tele-Rehabilitation after Stroke: An Updated Systematic Review of the Literature

Fred S. Sarfo et al.

JOURNAL OF STROKE & CEREBROVASCULAR DISEASES (2018)

Review Neurosciences

Tele-Rehabilitation after Stroke: An Updated Systematic Review of the Literature

Fred S. Sarfo et al.

JOURNAL OF STROKE & CEREBROVASCULAR DISEASES (2018)

Article Engineering, Biomedical

Myocontrol is closed-loop control: incidental feedback is sufficient for scaling the prosthesis force in routine grasping

Marko Markovic et al.

JOURNAL OF NEUROENGINEERING AND REHABILITATION (2018)

Article Multidisciplinary Sciences

Muscle patterns underlying voluntary modulation of co-contraction

Daniele Borzelli et al.

PLOS ONE (2018)

Article Engineering, Biomedical

Measurement of Dynamic Joint Stiffness from Multiple Short Data Segments

Kian Jalaleddini et al.

IEEE TRANSACTIONS ON NEURAL SYSTEMS AND REHABILITATION ENGINEERING (2017)

Article Robotics

An overview of null space projections for redundant, torque-controlled robots

Alexander Dietrich et al.

INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH (2015)

Article Automation & Control Systems

Tele-impedance based assistive control for a compliant knee exoskeleton

Nikos Karavas et al.

ROBOTICS AND AUTONOMOUS SYSTEMS (2015)

Article Computer Science, Interdisciplinary Applications

Benchmarking of dynamic simulation predictions in two software platforms using an upper limb musculoskeletal model

Katherine R. Saul et al.

COMPUTER METHODS IN BIOMECHANICS AND BIOMEDICAL ENGINEERING (2015)

Review Engineering, Biomedical

A survey on robotic devices for upper limb rehabilitation

Pawel Maciejasz et al.

JOURNAL OF NEUROENGINEERING AND REHABILITATION (2014)

Article Engineering, Biomedical

Model-Based Estimation of Knee Stiffness

Serge Pfeifer et al.

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING (2012)

Article Neurosciences

The Central Nervous System Does Not Minimize Energy Cost in Arm Movements

Dinant A. Kistemaker et al.

JOURNAL OF NEUROPHYSIOLOGY (2010)

Article Neurosciences

Structured Variability of Muscle Activations Supports the Minimal Intervention Principle of Motor Control

Francisco J. Valero-Cuevas et al.

JOURNAL OF NEUROPHYSIOLOGY (2009)

Article Biophysics

Modeling short-range stiffness of feline lower hindlimb muscles

Lei Cui et al.

JOURNAL OF BIOMECHANICS (2008)

Article Engineering, Biomedical

OpenSim: open-source software to create and analyze dynamic Simulations of movement

Scott L. Delp et al.

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING (2007)

Article Neurosciences

Endpoint stiffness of the arm is directionally tuned to instability in the environment

David W. Franklin et al.

JOURNAL OF NEUROSCIENCE (2007)

Article Engineering, Biomedical

A model of the upper extremity for simulating musculoskeletal surgery and analyzing neuromuscular control

KRS Holzbaur et al.

ANNALS OF BIOMEDICAL ENGINEERING (2005)

Article Neurosciences

Role of cocontraction in arm movement accuracy

PL Gribble et al.

JOURNAL OF NEUROPHYSIOLOGY (2003)

Article Neurosciences

Voluntary control of static endpoint stiffness during force regulation tasks

EJ Perreault et al.

JOURNAL OF NEUROPHYSIOLOGY (2002)

Article Sport Sciences

Knee and ankle joint stiffness in sprint running

S Kuitunen et al.

MEDICINE AND SCIENCE IN SPORTS AND EXERCISE (2002)

Article Neurosciences

Coactivation during gait as an adaptive behavior after stroke

A Lamontagne et al.

JOURNAL OF ELECTROMYOGRAPHY AND KINESIOLOGY (2000)