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Objective: To test automated in vivo estimation of active and passive skeletal muscle states using ultrasonic imaging. Background: Current technology (electromyography, dynamometry, shear wave imaging) provides no general, non-invasive…

Image and Video Processing · Electrical Eng. & Systems 2019-07-04 Ryan J. Cunningham , Ian D. Loram

Natural muscles provide mobility in response to nerve impulses. Electromyography (EMG) measures the electrical activity of muscles in response to a nerve's stimulation. In the past few decades, EMG signals have been used extensively in the…

Signal Processing · Electrical Eng. & Systems 2020-01-15 Mohsen Jafarzadeh , Daniel Curtiss Hussey , Yonas Tadesse

Time-efficient estimation of muscle activations and forces across multi-joint systems is critical for clinical assessment and assistive device control. However, conventional approaches are computationally expensive and lack a high-quality…

Machine Learning · Computer Science 2025-11-17 Shuhao Ma , Zeyi Huang , Yu Cao , Wesley Doorsamy , Chaoyang Shi , Jun Li , Zhi-Qiang Zhang

The online adaptation of exoskeleton control based on muscle activity sensing offers a promising approach to personalizing exoskeleton behavior based on the user's biosignals. While electromyography (EMG)-based methods have demonstrated…

Robotics · Computer Science 2025-10-01 Charlotte Marquardt , Arne Schulz , Miha Dezman , Gunther Kurz , Thorsten Stein , Tamim Asfour

The current practice for assessing neonatal postoperative pain relies on bedside caregivers. This practice is subjective, inconsistent, slow, and discontinuous. To develop a reliable medical interpretation, several automated approaches have…

Computer Vision and Pattern Recognition · Computer Science 2020-12-04 Md Sirajus Salekin , Ghada Zamzmi , Dmitry Goldgof , Rangachar Kasturi , Thao Ho , Yu Sun

Data-driven methods have become increasingly more prominent for musculoskeletal modelling due to their conceptually intuitive simple and fast implementation. However, the performance of a pre-trained data-driven model using the data from…

Signal Processing · Electrical Eng. & Systems 2022-11-23 Jie Zhang , Yihui Zhao , Tianzhe Bao , Zhenhong Li , Kun Qian , Alejandro F. Frangi , Sheng Quan Xie , Zhi-Qiang Zhang

The real-time assessment of complex motor skills presents a challenge in fields such as surgical training and rehabilitation. Recent advancements in neuroimaging, particularly functional near-infrared spectroscopy (fNIRS), have enabled…

Signal Processing · Electrical Eng. & Systems 2025-04-08 Aseem Subedi , Rahul , Lora Cavuoto , Steven Schwaitzberg , Matthew Hackett , Jack Norfleet , Suvranu De

With soft robotics being increasingly employed in settings demanding high and controlled contact forces, recent research has demonstrated the use of soft robots to estimate or intrinsically sense forces without requiring external sensing…

Robotics · Computer Science 2021-11-22 Lukas Lindenroth , Danail Stoyanov , Kawal Rhode , Hongbin Liu

Knowledge of interaction forces during teleoperated robot-assisted surgery could be used to enable force feedback to human operators and evaluate tissue handling skill. However, direct force sensing at the end-effector is challenging…

Robotics · Computer Science 2022-07-08 Zonghe Chua , Anthony M. Jarc , Allison M. Okamura

This study presents a transformer-based deep learning framework for the long-horizon prediction of full lower-limb joint angles and joint moments using surface electromyography (sEMG) and inertial measurement unit (IMU) signals. Two…

Robotics · Computer Science 2025-06-06 Farshad Haghgoo Daryakenari , Tara Farizeh

In minimally invasive telesurgery, obtaining accurate force information is difficult due to the complexities of in-vivo end effector force sensing. This constrains development and implementation of haptic feedback and force-based automated…

Robotics · Computer Science 2024-03-28 Shuyuan Yang , My H. Le , Kyle R. Golobish , Juan C. Beaver , Zonghe Chua

Recording muscle tendon junction displacements during movement, allows separate investigation of the muscle and tendon behaviour, respectively. In order to provide a fully-automatic tracking method, we employ a novel deep learning approach…

Quantitative Methods · Quantitative Biology 2020-09-09 Christoph Leitner , Robert Jarolim , Andreas Konrad , Annika Kruse , Markus Tilp , Jörg Schröttner , Christian Baumgartner

In this study, we developed a method to estimate the relationship between stimulation current and volatility during isometric contraction. In functional electrical stimulation (FES), joints are driven by applying voltage to muscles. This…

Human-Computer Interaction · Computer Science 2021-01-21 Tomoya Kitamura , Yuu Hasegawa , Sho Sakaino , Toshiaki Tsuji

Biomechanical and clinical gait research observes muscles and tendons in limbs to study their functions and behaviour. Therefore, movements of distinct anatomical landmarks, such as muscle-tendon junctions, are frequently measured. We…

Real-time simulation of elastic structures is essential in many applications, from computer-guided surgical interventions to interactive design in mechanical engineering. The Finite Element Method is often used as the numerical method of…

Machine Learning · Computer Science 2021-09-21 Alban Odot , Ryadh Haferssas , Stéphane Cotin

Inertial Measurement Units (IMUs) enable portable, multibody motion capture (MoCap) in diverse environments beyond the laboratory, making them a practical choice for diagnosing mobility disorders and supporting rehabilitation in clinical or…

Robotics · Computer Science 2025-05-14 Hassan Osman , Daan de Kanter , Jelle Boelens , Manon Kok , Ajay Seth

Visual-inertial sensors have a wide range of applications in robotics. However, good performance often requires different sophisticated motion routines to accurately calibrate camera intrinsics and inter-sensor extrinsics. This work…

Robotics · Computer Science 2021-10-01 Yunke Ao , Le Chen , Florian Tschopp , Michel Breyer , Andrei Cramariuc , Roland Siegwart

Measurement of environment interaction forces during robotic minimally-invasive surgery would enable haptic feedback to the surgeon, thereby solving one long-standing limitation. Estimating this force from existing sensor data avoids the…

Robotics · Computer Science 2020-12-14 Jie Ying Wu , Nural Yilmaz , Peter Kazanzides , Ugur Tumerdem

Force and torque sensing is crucial in robotic manipulation across both collaborative and industrial settings. Traditional methods for dynamics identification enable the detection and control of external forces and torques without the need…

Robotics · Computer Science 2024-09-06 Shilin Shan , Quang-Cuong Pham

Reliable estimation of neuromuscular activation is a key enabler for adaptive and personalized control in wearable robotics. However, surface electromyography (EMG) remains difficult to deploy robustly outside laboratory settings due to…

Robotics · Computer Science 2026-04-29 Miroljub Mihailovic , Luca Tonin , Stefano Tortora , Emanuele Menegatti