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Wrist proprioception

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https://www.readbyqxmd.com/read/28326030/expansion-of-perceptual-body-maps-near-but-not-across-the-wrist
#1
Matthew R Longo
Perceiving the external spatial location of touch requires that tactile information about the stimulus location on the skin be integrated with proprioceptive information about the location of the body in external space, a process called tactile spatial remapping. Recent results have suggested that this process relies on a distorted representation of the hand. Here, I investigated whether similar distortions are also found on the forearm and how they are affected by the presence of the wrist joint, which forms a categorical, segmental boundary between the hand and the arm...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28269302/robot-assisted-assessment-of-wrist-proprioception-does-wrist-proprioceptive-acuity-follow-weber-s-law
#2
Sara Contu, Francesca Marini, Leonardo Cappello, Lorenzo Masia
Proprioception is essential for planning and controlling limb posture and movement. In our recent work, we introduced a standardized robot-aided method for measuring proprioceptive discrimination thresholds at the wrist to obtain reliable and accurate measures of proprioceptive acuity. Weber's law defines discrimination thresholds as a constant ratio between the just noticeable difference and the reference or standard stimulus. Reporting Weber's fractions thus provides the possibility of comparing results with the reports of others collected worldwide...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227539/robot-assisted-assessment-of-wrist-proprioception-does-wrist-proprioceptive-acuity-follow-weber-s-law
#3
Sara Contu, Francesca Marini, Leonardo Cappello, Lorenzo Masia, Sara Contu, Francesca Marini, Leonardo Cappello, Lorenzo Masia, Lorenzo Masia, Sara Contu, Leonardo Cappello, Francesca Marini
Proprioception is essential for planning and controlling limb posture and movement. In our recent work, we introduced a standardized robot-aided method for measuring proprioceptive discrimination thresholds at the wrist to obtain reliable and accurate measures of proprioceptive acuity. Weber's law defines discrimination thresholds as a constant ratio between the just noticeable difference and the reference or standard stimulus. Reporting Weber's fractions thus provides the possibility of comparing results with the reports of others collected worldwide...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28159911/nerve-specific-input-modulation-to-spinal-neurons-during-a-motor-task-in-the-monkey
#4
Joachim Confais, Geehee Kim, Saeka Tomatsu, Tomohiko Takei, Kazuhiko Seki
If not properly regulated, the large amount of reafferent sensory signals generated by our own movement could destabilize the central nervous system. We investigated how input from peripheral nerves to spinal cord is modulated during behavior. We chronically stimulated the deep radial nerve (DR; proprioceptive, wrist extensors), the median nerve (M; mixed, wrist flexors and palmar skin) and the superficial radial nerve (SR; cutaneous, hand dorsum) while four monkeys performed a delayed wrist flexion-extension task...
February 3, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28069028/robot-aided-developmental-assessment-of-wrist-proprioception-in-children
#5
Francesca Marini, Valentina Squeri, Pietro Morasso, Claudio Campus, Jürgen Konczak, Lorenzo Masia
BACKGROUND: Several neurodevelopmental disorders and brain injuries in children have been associated with proprioceptive dysfunction that will negatively affect their movement. Unfortunately, there is lack of reliable and objective clinical examination protocols and our current knowledge of how proprioception evolves in typically developing children is still sparse. METHODS: Using a robotic exoskeleton, we investigated proprioceptive acuity of the wrist in a group of 49 typically developing healthy children (8-15 years), and a group of 40 young adults...
January 9, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/27821948/the-correlation-between-proprioception-and-handwriting-legibility-in-children
#6
So Young Hong, Nam-Hae Jung, Kyeong Mi Kim
[Purpose] This study investigated the association between proprioception, including joint position sense and kinetic sense, and handwriting legibility in healthy children. [Subjects and Methods] Assessment of joint position sense, kinetic sense, and handwriting legibility was conducted for 19 healthy children. Joint position sense was assessed by asking the children to flex their right elbow between 30° to 110° while blindfolded. The range of elbow movement was analyzed with Compact Measuring System 10 for 3D motion Analysis...
October 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27807417/wrist-proprioception-amplitude-or-position-coding
#7
Francesca Marini, Valentina Squeri, Pietro Morasso, Lorenzo Masia
This work examines physiological mechanisms underlying the position sense of the wrist, namely, the codification of proprioceptive information related to pointing movements of the wrist toward kinesthetic targets. Twenty-four healthy subjects participated to a robot-aided assessment of their wrist proprioceptive acuity to investigate if the sensorimotor transformation involved in matching targets located by proprioceptive receptors relies on amplitude or positional cues. A joint position matching test was performed in order to explore such dichotomy...
2016: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/27727321/robot-assisted-proprioceptive-training-with-added-vibro-tactile-feedback-enhances-somatosensory-and-motor-performance
#8
Anna Vera Cuppone, Valentina Squeri, Marianna Semprini, Lorenzo Masia, Jürgen Konczak
This study examined the trainability of the proprioceptive sense and explored the relationship between proprioception and motor learning. With vision blocked, human learners had to perform goal-directed wrist movements relying solely on proprioceptive/haptic cues to reach several haptically specified targets. One group received additional somatosensory movement error feedback in form of vibro-tactile cues applied to the skin of the forearm. We used a haptic robotic device for the wrist and implemented a 3-day training regimen that required learners to make spatially precise goal-directed wrist reaching movements without vision...
2016: PloS One
https://www.readbyqxmd.com/read/27677025/a-closed-loop-bci-system-for-rehabilitation-of-the-hemiplegic-upper-limb-a-performance-study-of-the-systems-ability-to-detect-intention-of-movement
#9
Juliette Hurtier, Leh Van Dokkum, Sami Dalhoumi, Aodhan Coffey, Stéphane Perrey, Claire Jourdan, Gérard Dray, Tomas Ward, Jerôme Froger, Isabelle Laffont
OBJECTIVE: Rehabilitation of the upper-limb by means of a brain computer interface (BCI) is based on detecting an "intention to act" in the brain and transforming this intention into actual movement by using a motorized orthesis. The visual and proprioceptive feedback that results from the systems' generated movement following the subjects' captured intention, is thought to close the sensori-motor loop. Closing the loop is a key feature of BCI-systems that is thought to induce cerebral plasticity and thereby facilitating rehabilitation...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27676993/can-tendon-vibration-therapy-improve-motor-recovery-in-the-arm-following-stroke-a-pilot-feasibility-study-of-a-clinical-protocol-in-11%C3%A2-patients
#10
Simon Butet, Clément Provost, Marylène Jousse, Leila Tlili, Victorine Quintaine, Isabelle Bonan, Alain Yelnik
OBJECTIVE: The positive effects on motor cortical excitability of stimulating proprioception with tendon vibration therapy have previously been reported in healthy individuals and in chronic stroke patient (Marconi et al., 2008 and 2011). The aim of this study is to evaluate the feasibility of a protocol of tendon vibration therapy in a neurorehabilitation service, with a view to proceeding to an efficacy study. MATERIAL/PATIENTS AND METHODS: We performed a prospective, single-centre study, including 11 patients, 8 men, mean age 61,7±10,6, with upper limb motor deficit secondary to a first stroke (5 ischaemic)...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27665394/effect-of-functional-electrical-stimulation-on-the-proprioception-motor-function-of-the-paretic-upper-limb-and-patient-quality-of-life-a-case-report
#11
Carlos Bustamante, Francisco Brevis, Sebastián Canales, Sebastián Millón, Rodrigo Pascual
Functional electrical stimulation (FES) has shown to improve motor function of the affected side in stroke patients; however, the effects of FES on proprioception, the functional recovery of the paretic upper limb, and the patient quality of life (QoL) are not clear. The aim of the current case report was to determine whether FES can improve joint position sense and the scores on measurements of upper limb function and a QoL survey. The participant was assessed before and after 10 consecutive intervention sessions; in addition, the patient performed the training tasks in the workstation assisted by the FES device...
October 2016: Journal of Hand Therapy: Official Journal of the American Society of Hand Therapists
https://www.readbyqxmd.com/read/27583794/robotic-mirror-therapy-system-for-functional-recovery-of-hemiplegic-arms
#12
Jaewon Beom, Sukgyu Koh, Hyung Seok Nam, Wonshik Kim, Yoonjae Kim, Han Gil Seo, Byung-Mo Oh, Sun Gun Chung, Sungwan Kim
Mirror therapy has been performed as effective occupational therapy in a clinical setting for functional recovery of a hemiplegic arm after stroke. It is conducted by eliciting an illusion through use of a mirror as if the hemiplegic arm is moving in real-time while moving the healthy arm. It can facilitate brain neuroplasticity through activation of the sensorimotor cortex. However, conventional mirror therapy has a critical limitation in that the hemiplegic arm is not actually moving. Thus, we developed a real-time 2-axis mirror robot system as a simple add-on module for conventional mirror therapy using a closed feedback mechanism, which enables real-time movement of the hemiplegic arm...
2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27536882/robot-aided-mapping-of-wrist-proprioceptive-acuity-across-a-3d-workspace
#13
Francesca Marini, Valentina Squeri, Pietro Morasso, Jürgen Konczak, Lorenzo Masia
Proprioceptive signals from peripheral mechanoreceptors form the basis for bodily perception and are known to be essential for motor control. However we still have an incomplete understanding of how proprioception differs between joints, whether it differs among the various degrees-of-freedom (DoFs) within a particular joint, and how such differences affect motor control and learning. We here introduce a robot-aided method to objectively measure proprioceptive function: specifically, we systematically mapped wrist proprioceptive acuity across the three DoFs of the wrist/hand complex with the aim to characterize the wrist position sense...
2016: PloS One
https://www.readbyqxmd.com/read/27514278/fes-induced-co-activation-of-antagonist-muscles-for-upper-limb-control-and-disturbance-rejection
#14
Antônio Padilha L Bó, Lucas O da Fonseca, Ana Carolina C de Sousa
Control systems for human movement based on Functional Electrical Stimulation (FES) have shown to provide excellent performance in different experimental setups. Nevertheless, there is still a limited number of such applications available today on worldwide markets, indicating poor performance in real settings, particularly for upper limb rehabilitation and assistance. Based on these premises, in this paper we explore the use of an alternative control strategy based on co-activation of antagonist muscles using FES...
August 8, 2016: Medical Engineering & Physics
https://www.readbyqxmd.com/read/27462533/arthroscopically-assisted-ligamentoplasty-for-axial-and-dorsal-reconstruction-of-the-scapholunate-ligament
#15
Vicente Carratalá, Francisco J Lucas, Eduardo Sánchez Alepuz, Eva Guisasola, Rafael Calero
Scapholunate (SL) ligament injury is among the most common injuries of the intrinsic ligaments of the carpus. Arthroscopic treatment in complete and nonacute injuries has had poor results. These cases have typically been treated using open surgical techniques that require a broad dorsal approach and produce soft tissue impairment, which leads to reduced wrist mobility. The development of wrist arthroscopy techniques has allowed the treatment of complete and nonacute injuries of the SL ligament, without the disadvantages of open surgery, respecting the soft tissues and avoiding injury of the posterior interosseous nerve, in an attempt to preserve the proprioception of the wrist and the secondary dorsal stabilizers...
April 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27445756/reliable-and-rapid-robotic-assessment-of-wrist-proprioception-using-a-gauge-position-matching-paradigm
#16
Mike D Rinderknecht, Werner L Popp, Olivier Lambercy, Roger Gassert
Quantitative assessments of position sense are essential for the investigation of proprioception, as well as for diagnosis, prognosis and treatment planning for patients with somatosensory deficits. Despite the development and use of various paradigms and robotic tools, their clinimetric properties are often poorly evaluated and reported. A proper evaluation of the latter is essential to compare results between different studies and to identify the influence of possible confounds on outcome measures. The aim of the present study was to perform a comprehensive evaluation of a rapid robotic assessment of wrist proprioception using a passive gauge position matching task...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27385802/optimal-visuotactile-integration-for-velocity-discrimination-of-self-hand-movements
#17
M Chancel, C Blanchard, M Guerraz, A Montagnini, A Kavounoudias
Illusory hand movements can be elicited by a textured disk or a visual pattern rotating under one's hand, while proprioceptive inputs convey immobility information (Blanchard C, Roll R, Roll JP, Kavounoudias A. PLoS One 8: e62475, 2013). Here, we investigated whether visuotactile integration can optimize velocity discrimination of illusory hand movements in line with Bayesian predictions. We induced illusory movements in 15 volunteers by visual and/or tactile stimulation delivered at six angular velocities...
September 1, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27362753/a-generalized-coherence-framework-for-detecting-and-characterizing-nonlinear-interactions-in-the-nervous-system
#18
Yuan Yang, Teodoro Solis-Escalante, Frans C T van der Helm, Alfred C Schouten
OBJECTIVE: This paper introduces a generalized coherence framework for detecting and characterizing nonlinear interactions in the nervous system, namely cross-spectral coherence (CSC). CSC can detect different types of nonlinear interactions including harmonic and intermodulation coupling as present in static nonlinearities and also subharmonic coupling, which only occurs with dynamic nonlinearities. METHODS: We verified the performance of CSC in model simulations with both static and dynamic nonlinear systems...
December 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27313380/evaluation-of-effects-of-different-treatments-for-the-wrist-joints-of-subdominant-hands-using-joint-proprioception-and-writing-time
#19
Chunying Hu, Qiuchen Huang, Lili Yu, Yue Hu, Xia Rongming, Zhou Li, Fu Xiaojiao, Rui Gu, Yao Cui, Meng Ge, Yanfeng Xu, Jianfeng Liu
[Purpose] The purpose of this study was to examine immediate effects of strength training and NJF distal resistance training in wrist joints by using writing time and evaluation of proprioception using the JPE test. [Subjects and Methods] The subjects were 12 young healthy people (24.2 ± 3.1 y, 169.7 ± 6.5 cm, 65.3 ± 12.6 kg). Two isotonic contraction techniques were applied on the wrist joint: wrist joint extension muscle strength training (MST) and the wrist joint extension pattern of NJF. The uppercase English alphabet writing time and joint position errors of the left upper limb were measured before and after one intervention session of MST and NJF...
May 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27296902/integrated-and-flexible-multichannel-interface-for-electrotactile-stimulation
#20
Matija Štrbac, Minja Belić, Milica Isaković, Vladimir Kojić, Goran Bijelić, Igor Popović, Milutin Radotić, Strahinja Došen, Marko Marković, Dario Farina, Thierry Keller
OBJECTIVE: The aim of the present work was to develop and test a flexible electrotactile stimulation system to provide real-time feedback to the prosthesis user. The system requirements were to accommodate the capabilities of advanced multi-DOF myoelectric hand prostheses and transmit the feedback variables (proprioception and force) using intuitive coding, with high resolution and after minimal training. APPROACH: We developed a fully-programmable and integrated electrotactile interface supporting time and space distributed stimulation over custom designed flexible array electrodes...
August 2016: Journal of Neural Engineering
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