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Wrist proprioception

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https://www.readbyqxmd.com/read/28698615/influence-of-the-body-schema-on-multisensory-integration-evidence-from-the-mirror-box-illusion
#1
Yuqi Liu, Jared Medina
When placing one hand on each side of a mirror and making synchronous bimanual movements, the mirror-reflected hand feels like one's own hand that is hidden behind the mirror. We developed a novel mirror box illusion to investigate whether motoric, but not spatial, visuomotor congruence is sufficient for inducing multisensory integration, and importantly, if biomechanical constraints encoded in the body schema influence multisensory integration. Participants placed their hands in a mirror box in opposite postures (palm up, palm down), creating a conflict between visual and proprioceptive feedback for the hand behind the mirror...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28506171/a-protocol-for-evaluation-and-rehabilitation-of-distal-radius-fractures-using-sensorimotor-input-a-case-series
#2
Ronit Wollstein, Dafna Michael, Hani Harel
BACKGROUND: Proprioception and sensorimotor input are used to treat neurological and joint injuries. Following distal radius fractures (DRF) there is a temporary loss of proprioception that should be addressed. We created a protocol for evaluation, and a treatment plan following wrist surgery that is based on proprioceptive and sensorimotor input. We describe a series of patients undergoing surgery for DRF that were evaluated and treated with these protocols. METHODS: Both evaluation and treatment protocols included comprehensive sensorimotor procedures performed with eyes open and closed...
June 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28501420/manipulation-of-visual-information-affects-control-strategy-during-a-visuomotor-tracking-task
#3
Paulina J M Bank, Lucas R M Dobbe, Carel G M Meskers, Jurriaan H de Groot, Erwin de Vlugt
Proper understanding of motor control requires insight into the extent and manner in which task performance and control strategy are influenced by various aspects of visual information. We therefore systematically manipulated the visual presentation (i.e., scaling factor and optical flow density) of a visuomotor tracking task without changing the task itself, and investigated the effect on performance, effort, motor control strategy (i.e., anticipatory or corrective steering) and underlying neuromechanical parameters (i...
June 30, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28425095/psychomotor-tremor-and-proprioceptive-control-problems-in-current-and-former-stimulant-drug-users-an-accelerometer-study-of-heavy-users-of-amphetamine-mdma-and-other-recreational-stimulants
#4
Luke A Downey, Brenda Tysse, Talitha C Ford, Angela C Samuels, Rory P Wilson, Andrew C Parrott
The recreational use of various stimulant drugs has been implicated in the development of movement disorders through dysregulation of the dopaminergic and serotoninergic neurotransmitter systems. The present study investigated psychomotor differences in current and former recreational stimulant drug users compared with nonusing controls. Sixty participants comprised 3 groups: 20 current stimulant drug users (CSUs; 11 men, aged 31.4 ± 9.1 years), 20 former stimulant drug users (FSUs; 5 men, aged 39.1 ± 8.5 years), and 20 nonuser controls (NUCs; 5 men, aged 35...
April 19, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28412953/quantification-of-task-dependent-cortical-activation-evoked-by-robotic-continuous-wrist-joint-manipulation-in-chronic-hemiparetic-stroke
#5
Martijn P Vlaar, Teodoro Solis-Escalante, Julius P A Dewald, Erwin E H van Wegen, Alfred C Schouten, Gert Kwakkel, Frans C T van der Helm
BACKGROUND: Cortical damage after stroke can drastically impair sensory and motor function of the upper limb, affecting the execution of activities of daily living and quality of life. Motor impairment after stroke has been thoroughly studied, however sensory impairment and its relation to movement control has received less attention. Integrity of the somatosensory system is essential for feedback control of human movement, and compromised integrity due to stroke has been linked to sensory impairment...
April 17, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28381489/parallel-processing-of-internal-and-external-feedback-in-the-spinocerebellar-system-of-primates
#6
Oren Cohen, Ran Harel, Tim D Aumann, Zvi Israel, Yifat Prut
Cerebellar control of voluntary movements is achieved by the integration of external and internal feedback information to adjust and correct properly ongoing actions. In the forelimb of primates, rostral-spinocerebellar tract (RSCT) neurons are thought to integrate segmental, descending, and afferent sources and relay upstream a compound signal that contains both an efference copy of the spinal-level motor command and the state of the periphery. We tested this hypothesis by implanting stimulating electrodes in the superior cerebellar peduncle and recording the activity of cervical spinal neurons in primates...
July 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28373948/arthroscopic-scapholunate-capsuloligamentous-repair-suture-with-dorsal-capsular-reinforcement-for-scapholunate-ligament-lesion
#7
Vicente Carratalá, Francisco J Lucas, Ignacio Miranda, Eduardo Sánchez Alepuz, Christian González Jofré
Scapholunate ligament (SLL) injury is the most frequent injury of the intrinsic carpal ligaments. The dorsal part of the SLL is the most important part for the stability of the scapholunate joint, and tears of this part and at least one of its secondary capsular attachments cause scapholunate dissociation. The arthroscopic technique most frequently used for acute injuries is reduction and fixation with Kirschner wires, and techniques that involve a primary repair of the injured ligament are performed by open surgery with efficient results...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28326030/expansion-of-perceptual-body-maps-near-but-not-across-the-wrist
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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