Muscle activation and electromyography studies

Coupling Mechanical and Metabolic Behavior in Huxley-type Muscle Models

This study shows that different cross-bridge rate parameters in Huxley-type muscle models can produce similar mechanical behavior but vary in metabolic predictions.

Physiological Cross-Sectional Surfaces: A Method for Estimating Muscle Functional Capacity from 3D Digital Models of Fiber Architecture

This paper introduces PCSS, a 3D method to estimate muscle functional capacity from MRI data, showing it outperforms conventional 2D measures in complex muscle geometries.

The Human Rectus Femoris Muscle Receives an Independent Common Synaptic Input During Isometric Leg Extensions

The paper investigates neural control of movement by analyzing common synaptic inputs in human quadriceps muscles during isometric leg extensions, finding that rectus femoris receives an independent input.

Anticipatory modulation of motor unit discharge rate before rapid isometric elbow flexion force production

The paper investigates anticipatory motor-unit discharge rate modulation before rapid isometric elbow flexion force production, finding that discharge rate increases more than motor-unit recruitment, especially at higher force targets.

Low-Latency sEMG Conditioning with Frequency-Tracked Harmonic PLI Cancellation and Exponential RMS Envelope Estimation

This paper develops a low-latency sEMG conditioning pipeline with harmonic cancellation and RMS envelope estimation, showing improved SNR and low computational delay.

High-density surface EMG grid enables non-invasive characterization of intrinsic hand muscles activity

This paper introduces a high-density surface EMG grid for non-invasive recording of intrinsic hand muscle activity, showing it closely matches intramuscular EMG with improved spatial selectivity.

Mental Tasks Induce Common Modulations of Oscillations in Cortex and Spinal Cord

The paper shows mental tasks modulate cortical and spinal oscillations concurrently, with CST power in beta and low-gamma bands serving as a potential control signal for neural interfaces.

Kernel Dimensionality Has Limited Impact on Generalizability of CNN-Based Neural Drive Estimation from HD-sEMG

This study evaluates how kernel dimensionality in CNNs affects neural drive estimation from HD-sEMG, finding that 2D CNNs offer the best balance of accuracy and efficiency.

Estimating Muscle Parameters via Hierarchical Bayesian Inference

This paper introduces a hierarchical Bayesian framework to estimate subject-specific muscle parameters using EMG and torque data, achieving high accuracy and robustness in musculoskeletal modeling.

The mammalian muscle spindle as a tunable feedback controller in locomotion

This paper develops a biophysical model of the muscle spindle to simulate how gamma motor neuron drive modulates spindle firing during locomotion, revealing its role as a tunable feedback controller.

Consistency Analyses of Open-source Software for Motor Unit Decomposition Using High-density Electromyography Signal

This study evaluates the consistency of 7 open-source motor unit decomposition tools using HD-sEMG data, finding significant variability in results and requiring manual editing for reliable analysis.

Unilateral resistance training induces greater rate coding adaptations in high-threshold motor units during maximal voluntary contractions

This study shows that unilateral resistance training increases maximal force through enhanced rate coding in high-threshold motor units during maximal voluntary contractions.

A time-dependent mechano-bioenergetics model of muscle contraction

This paper introduces a time-dependent mechano-bioenergetics model of muscle contraction that captures ATP regeneration and recovery costs, validated across multiple contractile conditions.

Effect of joint velocity and pre-activation on the torque-fascicle length relationship of the vastus lateralis

This study examines how joint velocity and pre-activation affect the torque-angle and torque-fascicle length relationships in the vastus lateralis during isokinetic knee extensions, finding that velocity alters operating length but not optimal length, and isometric pre-activation reduces torque.

Validation of a multiscale Hill-type actuator against comprehensive benchmarks of motor unit and muscle force measurements

This paper develops and validates a multiscale Hill-type neuromuscular actuator against experimental benchmarks of motor unit and muscle force measurements, showing improved accuracy in force reproduction.

Spinal reflex modulation in the pelvic floor muscles through sensory stimulation from the lower limb

This study investigates how sensory stimulation from the lower limb can modulate pelvic floor muscle activity through cutaneous reflexes, finding that tibial nerve stimulation elicits stronger reflex responses than superficial peroneal nerve stimulation.

Curated Residual Decomposition for Increased MU Yield from HD-sEMG

CRD improves MU yield from HD-sEMG by decomposing residual signals, identifying previously undetected low-amplitude MUs across multiple datasets.

A novel methodological framework for the assessment of the neural control of the shoulder using high-density surface electromyography.

This paper develops a method to assess neural control of shoulder muscles using HDsEMG and robotic arm data, revealing task-specific activation patterns and motor unit behavior.

The Limited Range of Motion of the Knee Does Not Fully Explain the Altered Neural Control of Plantar Flexors During Gait in Non-Neurological Knee Flexion Contracture

This study compares neural control of plantar flexors during gait between individuals with knee flexion contracture and controls, finding increased neural drive and common input in the chronic group despite similar knee motion.

Physiological and pathological motor unit phenotypes coexist within single motor pools after cervical SCI

The paper investigates motor unit recruitment and derecruitment dynamics in individuals with chronic cervical SCI, revealing coexisting phenotypes within motor pools.

Neural and mechanical properties of vastus lateralis and vastus medialis at different rectus femoris muscle lengths

This study examines how varying rectus femoris length affects motor unit discharge rates in vasti muscles during isometric contractions, finding increased discharge rates at low force but not high force.

Muscle-specific motor unit firing characteristics in elbow flexors and extensors after cervical spinal cord injury

The paper examines muscle-specific changes in motor unit firing characteristics in elbow flexors and extensors after cervical spinal cord injury, finding altered rate coding in biceps brachii but not triceps brachii.

Lempel-Ziv complexity of simultaneous surface electromyography and magnetomyography during muscle fatigue

The paper compares complexity-based metrics from surface electromyography (sEMG) and magnetomyography (MMG) during muscle fatigue, finding that complexity captures signal organization changes not explained by amplitude or spectral features.

Effect-oriented automated muscle path modeling via gradient-specified optimization using muscle surface mesh and moment arm

This study introduces an automated muscle path modeling approach that optimizes paths to match anatomical and biomechanical constraints, producing realistic results efficiently.

A comparative analysis of co-contraction indices using synthetic EMG data: Implications for selection and interpretation

This paper evaluates six co-contraction indices using synthetic EMG data to classify them into categories and provide recommendations for their use based on their sensitivity to different EMG features.

Co-contraction index improves estimates of knee joint contact forces: A musculoskeletal modelling study

This study improves knee joint contact force estimates by incorporating co-contraction index into musculoskeletal modeling, reducing error by 7% compared to minimum activation methods.

Motor Unit Number Estimation in Magnetomyography

This study compares motor unit number estimation using optically pumped magnetometer-based magnetomyography (OPM-MMG) and surface electromyography (EMG), finding that OPM-MMG can estimate motor unit numbers contactlessly with comparable accuracy when signal-to-noise ratio is equalized.

Muscle control of an extra robotic digit

This study compares muscle-based EMG and movement-based force sensor control of a robotic third thumb, finding force control performs better but EMG offers better generalisation.

What is the influence of knee joint movement on the maximal average mechanical power output of human quadriceps femoris muscle?

This study uses a Hill-type muscle-tendon-complex model to determine how knee joint movement affects maximal average mechanical power output of the quadriceps femoris muscle, finding strong interactions between cycle frequency and knee joint excursion.

Muscle-driven hand simulations emphasize the critical role of the extensor mechanism

The paper uses biomechanical simulations to study hand motion, finding that extensor muscle path modifications improve accuracy in tracking interphalangeal joints during American Sign Language gestures.