Filters








8,180 Hits in 12.1 sec

Spatiotemporal Maps of Proprioceptive Inputs to the Cervical Spinal Cord During Three-Dimensional Reaching and Grasping [article]

Pierre Kibleur, Shravan R Tata, Nathan Greiner, Sara Conti, Beatrice Barra, Katie Z Zhuang, Melanie Kaeser, Auke Ijspeert, Marco Capogrosso
2019 biorxiv/medrxiv   pre-print
In this work, we developed a computational framework to estimate the spatiotemporal patterns of proprioceptive inputs to the cervical spinal cord during three-dimensional arm movements in monkeys.  ...  Proprioceptive feedback is a critical component of voluntary movement planning and execution.  ...  In particular, upper arm muscles are activated in the first part of the reaching phase to lift the arm and initiate the whole limb movement.  ... 
doi:10.1101/790816 fatcat:esklyed6hrhijlvslzd2r67dqu

Segmentation of endpoint trajectories does not imply segmented control

D. Sternad, S. Schaal
1999 Experimental Brain Research  
In two experiments human subjects performed a set of elliptical and figure-8 patterns of different sizes and orientations using their whole arm in 3D.  ...  In this context, two hypotheses of movement segmentation of endpoint trajectories in 3D human drawing movements are re-examined: (1) the strokebased segmentation hypothesis based on the results that the  ...  This work was made possible by Award #9710312 of the National Science Foundation, the ERATO Kawato Dynamic Brain Project funded by the Japanese Science and Technology Cooperation, and the ATR Human Information  ... 
doi:10.1007/s002210050606 pmid:9928796 fatcat:roj5h4eeqjevhgbckcptwich7e

Interacting Noise Sources Shape Patterns of Arm Movement Variability in Three-Dimensional Space

Gregory A. Apker, Timothy K. Darling, Christopher A. Buneo
2010 Journal of Neurophysiology  
Seven human subjects performed reaches to targets arranged in three vertical planes separated in depth, and movements were made with and without visual feedback of the hand.  ...  Effects of on-line visual feedback These results may also be interpreted with respect to the role of vision in the on-line control of arm movements in 3D space.  ... 
doi:10.1152/jn.00590.2010 pmid:20844108 fatcat:ycwuyh72hzbzdgtgcnc67hv75y

Postural effects on arm movement variability are idiosyncratic and feedback-dependent [article]

Preyaporn Phataraphruk, Qasim Rahman, Kishor Lakshminarayanan, Mitchell Fruchtman, Christopher Buneo
2020 bioRxiv   pre-print
Reaching movements are subject to noise arising during the sensing, planning and execution phases of movement production, which contributes to movement variability.  ...  The results emphasize the role of factors other than noise (i.e. biomechanics and suboptimal sensorimotor integration) in constraining patterns of movement variability in 3D space.  ...  These differences were largest during the terminal phases of movement for reaches made in the NV condition.  ... 
doi:10.1101/2020.12.23.424234 fatcat:x5ownf3lunauni4cxdmtuedilm

Decoding Action Intentions from Preparatory Brain Activity in Human Parieto-Frontal Networks

J. P. Gallivan, D. A. McLean, K. F. Valyear, C. E. Pettypiece, J. C. Culham
2011 Journal of Neuroscience  
Here we demonstrate using functional MRI (fMRI) pattern recognition techniques that we can also decode movement intentions from human brain signals, specifically object-directed grasp and reach movements  ...  These findings offer new insights into the detailed movement information contained in human preparatory brain activity and advance our present understanding of sensorimotor planning processes through a  ...  Principal among these has been the ability to predict or decode upcoming sensorimotor behaviors (such as movements of the arm or eyes) based on changes in parieto-frontal neural activity that precede movement  ... 
doi:10.1523/jneurosci.0080-11.2011 pmid:21715625 pmcid:PMC6623162 fatcat:u6icdm2e5bgzndvemalliuzzau

Generality and legibility in mobile manipulation

Michael Beetz, Freek Stulp, Piotr Esden-Tempski, Andreas Fedrizzi, Ulrich Klank, Ingo Kresse, Alexis Maldonado, Federico Ruiz
2009 Autonomous Robots  
from humans.  ...  This article investigates methods for achieving more general manipulation capabilities for mobile manipulation platforms, which produce legible behavior in human living environments.  ...  (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) Human-like reaching and grasping Humans usually perform manipulation tasks with highly stereotyped movement patterns [50] .  ... 
doi:10.1007/s10514-009-9152-9 fatcat:k7f6bs2r7vftbbhlep72av4kzy

Motor planning brings human primary somatosensory cortex into movement-specific preparatory states [article]

Giacomo Ariani, J. Andrew Pruszynski, Jörn Diedrichsen
2020 bioRxiv   pre-print
Yet, the neural processes that occur in human primary motor and somatosensory cortex during planning, and how they relate to those during movement execution, remain poorly understood.  ...  Motor planning plays a critical role in producing fast and accurate movement.  ...  While the neuronal correlates of movement planning have largely been studied in non-human primates using upper limb movements, such as reaching and grasping, motor planning also plays a crucial role in  ... 
doi:10.1101/2020.12.17.423254 fatcat:p7prznnqmfe3bllp5t2vw3e3zm

Human-Like Arm Motion Generation: A Review

Gianpaolo Gulletta, Wolfram Erlhagen, Estela Bicho
2020 Robotics  
This paper presents a literature review of the most recent research on the generation of human-like arm movements in humanoid and manipulation robotic systems.  ...  Results show that there is a strong focus on the generation of single-arm reaching movements and biomimetic-based methods.  ...  Additionally, patterns on human movements have been principally analyzed by considering the hand motion, which reflects properties on the end-effector trajectory in robotics.  ... 
doi:10.3390/robotics9040102 fatcat:fahjlaf6hraslknxo7ifw5o4au

Hybrid local and distributed coding in PMd/M1 provides separation and interaction of bilateral arm signals [article]

Tanner C Dixon, Christina M Merrick, Joni D Wallis, Richard B Ivry, Jose M Carmena
2020 bioRxiv   pre-print
Using an instructed-delay reaching task in monkeys, we identified two components in population responses spanning PMd and M1.  ...  It was most prominent following movement when M1 became strongly engaged, and principally involved the contralateral hemisphere.  ...  Kitano for help in NHP care and handling, and A. You, W. Liberti and Z. Balewski for helpful discussions.  ... 
doi:10.1101/2020.09.23.310664 fatcat:pxs6oco36vgcbbt2dwxaifuiyi

Electrical Stimulation Of The Cervical Dorsal Roots Enables Functional Arm And Hand Movements In Monkeys With Cervical Spinal Cord Injury [article]

Beatrice Barra, Sara Conti, Matthew G Perich, Katie Zhuang, Giuseppe Schiavone, Florian Fallegger, Katia Galan, Nicholas James, Quentin Barraud, Maude Delacombaz, Melanie Kaeser, Eric M Rouiller (+5 others)
2020 bioRxiv   pre-print
Promising neurotechnologies stimulating muscles to bypass the injury enabled grasping in humans with SCI but failed to sustain whole arm functional movements that are necessary for daily living activities  ...  We then triggered these bursts using movement-related intracortical signals, which enabled monkeys with arm motor deficits to perform an unconstrained, three-dimensional reach and grasp task.  ...  Acknowledgements The authors would like to thank Jacques Maillard and Laurent Bossy for the care provided to the animals, Dr Eric Schmidlin and Simon Borgognon for their help with anaesthesia and surgery  ... 
doi:10.1101/2020.11.13.379750 fatcat:v7pfhyapdvhb3lwthelmujyfsi

Hybrid dedicated and distributed coding in PMd/M1 provides separation and interaction of bilateral arm signals

Tanner C. Dixon, Christina M. Merrick, Joni D. Wallis, Richard B. Ivry, Jose M. Carmena, Aldo A. Faisal
2021 PLoS Computational Biology  
It was most prominent following movement when M1 became strongly engaged, and principally involved the contralateral hemisphere.  ...  Using an instructed-delay reaching task in monkeys, we identified two components in population responses spanning PMd and M1.  ...  Kitano for help in NHP care and handling, and A. You, E. Formento, W. Liberti and Z. Balewski for methodological advice and feedback.  ... 
doi:10.1371/journal.pcbi.1009615 pmid:34807905 pmcid:PMC8648118 fatcat:qf4k5mjfg5asrhir4xjbzctlpq

Planar Covariation of Hindlimb and Forelimb Elevation Angles during Terrestrial and Aquatic Locomotion of Dogs

Giovanna Catavitello, Yuri P. Ivanenko, Francesco Lacquaniti, Juliane Kaminski
2015 PLoS ONE  
The results showed significant variations in the relative duration of rearward limb movement, amplitude of angular motion, and inter-limb coordination, with gait patterns ranging from a lateral sequence  ...  Notably, phase relationships and orientation of the covariation plane were highly limb specific, consistent with the functional differences in their neural control.  ...  and tended also to be lower than walking though not-significantly, p = 0.1), consistent with better planarity of the 3D gait loop in the absence of foot-support interactions in humans [75] .  ... 
doi:10.1371/journal.pone.0133936 pmid:26218076 pmcid:PMC4517757 fatcat:b7hrm6z2a5hzdhor4dy36wux2q

Inter-joint coupling and joint angle synergies of human catching movements

Till Bockemühl, Nikolaus F. Troje, Volker Dürr
2010 Human Movement Science  
In reaching movements of the human arm, redundancy occurs at the kinematic level because there are an unlimited number of arm postures for each position of the hand.  ...  When we pooled complete sets of movements, three PCs, the theoretical minimum for reaching in 3D space, were sufficient to explain 80% of the data's variance.  ...  In the context of human arm movements, PCA has been applied to the analysis of rhythmic juggling movements (Post, Daffertshofer, & Beek, 2000) , object retrieval (Sabatini, 2002) , and whole body reaching  ... 
doi:10.1016/j.humov.2009.03.003 pmid:19945187 fatcat:n2pc5d4spzgt7dwdcjt3dq7tb4

Sensory motor remapping of space in human–machine interfaces [chapter]

Ferdinando A. Mussa-Ivaldi, Maura Casadio, Zachary C. Danziger, Kristine M. Mosier, Robert A. Scheidt
2011 Progress in Brain Research  
We also discuss the perspective of endowing human-machine interfaces with learning algorithms that, combined with human learning, may facilitate the control of powered wheelchairs and other assistive devices  ...  We present some theoretical considerations and experimental evidence about the ability of the nervous system to create novel patterns of coordination that are consistent with the representation of extrapersonal  ...  (a) Patterns of cursor trajectory errors are similar to those typically observed in studies of horizontal planar reaching with the arm.  ... 
doi:10.1016/b978-0-444-53752-2.00014-x pmid:21741543 pmcid:PMC3517730 fatcat:g7ey2hngvbbmza3p2u6kcp2nx4

Learning to grasp and extract affordances: the Integrated Learning of Grasps and Affordances (ILGA) model

James Bonaiuto, Michael A. Arbib
2015 Biological cybernetics  
We present the Integrated Learning of Grasps and Affordances (ILGA) model that simultaneously learns grasp affordances from visual object features and motor parameters for planning grasps using trial-and-error  ...  activate neural populations in primary motor cortex that synergistically control different combinations of fingers.  ...  distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecomm ons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in  ... 
doi:10.1007/s00422-015-0666-2 pmid:26585965 pmcid:PMC4656720 fatcat:c5odklgslvf5fhfnefstthgjim
« Previous Showing results 1 — 15 out of 8,180 results