Mental Tasks Induce Common Modulations of Oscillations in Cortex and Spinal Cord DOI Open Access
Patrick Ofner, Dario Farina, Carsten Mehring

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Ноя. 8, 2024

ABSTRACT We investigated whether power modulations of cortical oscillations induced by mental tasks are paralleled the same in spinal motor neurons. recruited 15 participants and recorded high-density electromyography signals (HD-EMG) from tibialis anterior muscle, as well electroencephalography (EEG) signals. The cumulative spike train (CST) was computed activity neurons decoded HD-EMG performed sustained dorsiflexion concurrent with foot imagery, hand arithmetic, or no specific task. found significant correlations between CST EEG across trials irrespective task at intra-muscular coherence peak ( τ trial = 0.08 ± 0.10, 0.33 0.19, respectively; mean std. dev.). beta low-gamma bands could provide a novel control signal for neural interface applications, changes these not translated into actual force changes. To evaluate potential signal, we classified bandpower linear classifier obtained classification accuracies slightly but significantly above chance level (30% 5%; 25%). These results show first time that can modulate concurrently. This supports notion movement-unrelated leak down cortex to level. further be CST, although research is necessary boost performance an adequate applications. Significance Statement Spike trains have frequency components below 10 Hz muscle also contain do directly produce changes, currently lack clear functional interpretation. Our findings indicate can, least part, remnants force-unrelated propagate propagation enables decoding evoked oscillation

Язык: Английский

NeuroMotion: Open-source platform with neuromechanical and deep network modules to generate surface EMG signals during voluntary movement DOI Creative Commons
Shihan Ma, Irene Méndez Guerra, Arnault H. Caillet

и другие.

PLoS Computational Biology, Год журнала: 2024, Номер 20(7), С. e1012257 - e1012257

Опубликована: Июль 3, 2024

Neuromechanical studies investigate how the nervous system interacts with musculoskeletal (MSK) to generate volitional movements. Such have been supported by simulation models that provide insights into variables cannot be measured experimentally and allow a large number of conditions tested before experimental analysis. However, current electromyography (EMG), core physiological signal in neuromechanical analyses, remain either limited accuracy or are computationally heavy apply. Here, we computational platform enable future work overcome these limitations presenting NeuroMotion, an open-source simulator can modularly test variety approaches full-spectrum synthesis EMG signals during voluntary We demonstrate NeuroMotion using three sample modules. The first module is upper-limb MSK model OpenSim API estimate muscle fibre lengths activations second BioMime, deep neural network-based generator receives nonstationary parameter inputs, like afore-estimated lengths, efficiently outputs motor unit action potentials (MUAPs). third pool transforms discharge timings units. convolved output BioMime simulate movement. show MUAP waveforms change different levels variations then synthetic two-degree-of-freedom hand wrist movements used augment data for regressing joint angles. Ridge regressors trained on dataset were directly predict angles from data. In this way, was able use-case human forearm electrophysiology hand, wrist, All intermediate available, which allows user study cause-effect relationships complex system, fast iterate algorithms collecting data, validate non-measurable parameters experiments. expect modular will validation generative models, complement empower research.

Язык: Английский

Процитировано

6
Hill-type models of skeletal muscle and neuromuscular actuators: a systematic review DOI Creative Commons
Arnault H. Caillet, Andrew Phillips, Christopher P. Carty

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2022, Номер unknown

Опубликована: Окт. 18, 2022

Abstract Backed by a century of research and development, Hill-type models skeletal muscle, often including muscle-tendon complex neuromechanical interface, are widely used for countless applications. Lacking recent comprehensive reviews, the field modelling is, however, dense hard-to-explore, with detrimental consequences on innovation. Here we present first systematic review muscle modelling. It aims to clarify literature detailing its contents critically discussing state-of-the-art identifying latest advances, current gaps, potential future directions in For this purpose, fifty-seven criteria-abiding were assessed according completeness evaluation, which identified modelled properties, considered level validation reusability models, as well their strategy calibration. is concluded that most (1) do not significantly advance beyond historical gold standards, (2) neglect importance parameter identification, (3) lack robust validation, (4) reusable other studies. Besides providing convenient tool supported extensive supplementary material navigating literature, results highlight need global recommendations optimize inter-study consistency, knowledge transfer, model reusability.

Язык: Английский

Процитировано

15
Comparison Between InterCriteria and Correlation Analyses over sEMG Data from Arm Movements in the Horizontal Plane DOI Creative Commons
Maria Angelova, Rositsa Raikova,

Silvija Angelova

и другие.

Applied Sciences, Год журнала: 2024, Номер 14(21), С. 9864 - 9864

Опубликована: Окт. 28, 2024

InterCriteria analysis (ICrA) and two kinds of correlation analyses, Pearson (PCA) Spearman (SCA), were applied to surface electromyography (sEMG) signals obtained from human arm movements in the horizontal plane. Ten healthy participants performed ten movements, eight which cyclic. Each cyclic movement (CM) consisted flexion extension phases with equal duration (10 s, 6 2 1 s) 5 s rest poses between them. The CMs without an added load 0.5 kg on wrists participants. sEMG six different muscles or separate muscle heads (m. deltoideus pars clavicularis, m. spinata, brachialis, anconeus, biceps brachii, triceps brachii long head) recorded used compare results ICrA, PCA, SCA. All three methods found identical consonance pairs for CM phases. Additionally, PCA detected more In this investigation, SCA proven be reliable tools when separately combination data. These are appropriate researching plane experimental protocol revision.

Язык: Английский

Процитировано

1
Mental Tasks Induce Common Modulations of Oscillations in Cortex and Spinal Cord DOI Open Access
Patrick Ofner, Dario Farina, Carsten Mehring

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Ноя. 8, 2024

ABSTRACT We investigated whether power modulations of cortical oscillations induced by mental tasks are paralleled the same in spinal motor neurons. recruited 15 participants and recorded high-density electromyography signals (HD-EMG) from tibialis anterior muscle, as well electroencephalography (EEG) signals. The cumulative spike train (CST) was computed activity neurons decoded HD-EMG performed sustained dorsiflexion concurrent with foot imagery, hand arithmetic, or no specific task. found significant correlations between CST EEG across trials irrespective task at intra-muscular coherence peak ( τ trial = 0.08 ± 0.10, 0.33 0.19, respectively; mean std. dev.). beta low-gamma bands could provide a novel control signal for neural interface applications, changes these not translated into actual force changes. To evaluate potential signal, we classified bandpower linear classifier obtained classification accuracies slightly but significantly above chance level (30% 5%; 25%). These results show first time that can modulate concurrently. This supports notion movement-unrelated leak down cortex to level. further be CST, although research is necessary boost performance an adequate applications. Significance Statement Spike trains have frequency components below 10 Hz muscle also contain do directly produce changes, currently lack clear functional interpretation. Our findings indicate can, least part, remnants force-unrelated propagate propagation enables decoding evoked oscillation

Язык: Английский

Процитировано

0