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Proprioception

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https://www.readbyqxmd.com/read/28080303/the-development-of-a-cross-modal-sense-of-body-ownership
#1
Elena Nava, Nadia Bolognini, Chiara Turati
In this study, we investigated the contribution of tactile and proprioceptive cues to the development of the sense of body ownership by testing the susceptibility of 4- to 5-year-old children, 8- to 9-year-old children, and adults to the somatic rubber-hand illusion (SRHI). We found that feelings of owning a rubber hand in the SHRI paradigm, as assessed by explicit reports (i.e., questionnaire), are already present by age 4 and do not change throughout development. In contrast, the effect of the illusion on the sense of hand position, as assessed by a pointing task, was present only in 8- to 9-year-old children and adults; the magnitude of such capture increased with age...
January 1, 2017: Psychological Science
https://www.readbyqxmd.com/read/28077660/muscle-spindles-in-human-tibialis-anterior-encode-muscle-fascicle-length-changes
#2
James Thomas Day, Leah R Bent, Ingvars Birznieks, Vaughan G Macefield, Andrew G Cresswell
Muscle spindles provide exquisitely sensitive proprioceptive information regarding joint position and movement. Through passively driven length changes in the muscle-tendon unit (MTU), muscle spindles detect joint rotations because of their in-parallel mechanical linkage to muscle fascicles. In human microneurography studies, muscle fascicles are assumed to follow the MTU and, as such, fascicle length is not measured in such studies. However, under certain mechanical conditions compliant structures can act to decouple the fascicles, and therefore the spindles, from the MTU...
January 11, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28077329/body-schema-plasticity-after-stroke-subjective-and-neurophysiological-correlates-of-the-rubber-hand-illusion
#3
Roberto Llorens, Adrián Borrego, Priscila Palomo, Ausiàs Cebolla, Enrique Noé, Sergi Bermúdez I Badia, Rosa Baños
Stroke can lead to motor impairments that can affect the body structure and restraint mobility. We hypothesize that brain lesions and their motor sequelae can distort the body schema, a sensorimotor map of body parts and elements in the peripersonal space through which human beings embody the reachable space and ready the body for forthcoming movements. Two main constructs have been identified in the embodiment mechanism: body-ownership, the sense that the body that one inhabits is his/her own, and agency, the sense that one can move and control his/her body...
January 8, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28076347/spatiotemporal-feedback-and-network-structure-drive-and-encode-caenorhabditis-elegans-locomotion
#4
James M Kunert, Joshua L Proctor, Steven L Brunton, J Nathan Kutz
Using a computational model of the Caenorhabditis elegans connectome dynamics, we show that proprioceptive feedback is necessary for sustained dynamic responses to external input. This is consistent with the lack of biophysical evidence for a central pattern generator, and recent experimental evidence that proprioception drives locomotion. The low-dimensional functional response of the Caenorhabditis elegans network of neurons to proprioception-like feedback is optimized by input of specific spatial wavelengths which correspond to the spatial scale of real body shape dynamics...
January 2017: PLoS Computational Biology
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/28060536/proprioception-in-patients-with-anterior-cruciate-ligament-tears
#6
Hyun-Jung Kim, Jin-Hyuck Lee, Dae-Hee Lee
BACKGROUND: Because of a reduction in the number of mechanoreceptors or alterations of their characteristics, anterior cruciate ligament (ACL) tears lead not only to mechanical instability but also to impaired proprioception. Purpose/Hypothesis: This study analyzed whether ACL tears cause a greater decrease in proprioception in injured than in uninjured knees. The hypothesis was that knee proprioception after ACL tears would decrease more in injured than in contralateral uninjured knees, regardless of the method used to measure knee proprioception...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28060526/effects-of-dual-monitor-computer-work-versus-laptop-work-on-cervical-muscular-and-proprioceptive-characteristics-of-males-and-females
#7
Amanda M Farias Zuniga, Julie N Côté
OBJECTIVE: The effects of performing a 90-minute computer task with a laptop versus a dual monitor desktop workstation were investigated in healthy young male and female adults. BACKGROUND: Work-related musculoskeletal disorders are common among computer (especially female) users. Laptops have surpassed desktop computer sales, and working with multiple monitors has also become popular. However, few studies have provided objective evidence on how they affect the musculoskeletal system in both genders...
December 1, 2016: Human Factors
https://www.readbyqxmd.com/read/28056109/postural-ataxia-in-cerebellar-downbeat-nystagmus-its-relation-to-visual-proprioceptive-and-vestibular-signals-and-cerebellar-atrophy
#8
Christoph Helmchen, Jan-Birger Kirchhoff, Martin Göttlich, Andreas Sprenger
BACKGROUND: The cerebellum integrates proprioceptive, vestibular and visual signals for postural control. Cerebellar patients with downbeat nystagmus (DBN) complain of unsteadiness of stance and gait as well as blurred vision and oscillopsia. OBJECTIVES: The aim of this study was to elucidate the differential role of visual input, gaze eccentricity, vestibular and proprioceptive input on the postural stability in a large cohort of cerebellar patients with DBN, in comparison to healthy age-matched control subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28055142/executive-functions-deficits-impair-extinction-of-generalization-of-fear-of-movement-related-pain
#9
N G Niederstrasser, A Meulders, M Meulders, D Struyf, J W Vlaeyen
BACKGROUND: Generalization of fear of movement-related pain across novel but similar movements can lead to fear responses to movements that are actually not associated with pain. The peak-shift effect describes a phenomenon whereby particular novel movements elicit even greater fear responses than the original pain-provoking movement (CS+), because they represent a more extreme version of the CS+. There is great variance in the propensity to generalize as well as the speed of extinction learning when these novel movements are not followed by pain...
January 5, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28053621/clinical-and-magnetic-resonance-imaging-features-of-compressive-cervical-myelopathy-with-traumatic-intervertebral-disc-herniation-in-cynomolgus-macaque-macaca-fascicularis
#10
Yun-Jung Choi, Hye-Jin Park, Chul-Ho Sohn, Kyeong Cheon Jung, Seong Hoe Park, Jae-Il Lee
Intervertebral disc herniation (IVDH) with nucleus pulposus extrusion, traumatic or not, is a devastating clinical condition accompanied by neurological problems. Here we report a cynomolgus macaque suffering from acute and progressive neurological dysfunction by a blunt trauma due to neck collar, an animal handling device. Tetraplegia, urinary incontinence, decreased proprioception, and imperception of pain were shown on physical and neurological examinations. MRI sagittal T2 weighted sequences revealed an extensive protrusion of disc material between C2 and C3 cervical vertebra, and this protrusion resulted in central stenosis of the spinal cord...
December 2016: Laboratory Animal Research
https://www.readbyqxmd.com/read/28053026/self-grounded-vision-hand-ownership-modulates-visual-location-through-cortical-%C3%AE-and-%C3%AE-oscillations
#11
Nathan Faivre, Jonathan Dönz, Michele Scandola, Herberto Dhanis, Javier Bello Ruiz, Fosco Bernasconi, Roy Salomon, Olaf Blanke
: Vision is known to be shaped by context, defined by environmental and bodily signals. In the Taylor illusion, the size of an afterimage projected on one's hand changes according to proprioceptive signals conveying hand position. Here, we assessed whether the Taylor illusion does not just depend on the physical hand position, but also on bodily self-consciousness as quantified through illusory hand ownership. Relying on the somatic rubber hand illusion, we manipulated hand ownership, such that participants embodied a rubber hand placed next to their own hand...
January 4, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28051280/tongue-somatosensory-evoked-potentials-reflect-midbrain-involvement-in-patients-with-clinically-isolated-syndrome
#12
Magdalena Krbot Skorić, Ivan Adamec, Luka Crnošija, Tereza Gabelić, Barbara Barun, Ivana Zadro, Silva Butković Soldo, Mario Habek
AIM: To test the hypothesis that tSSEP findings reflect clinical and MRI MS lesions, the aim of this study was to investigate tSSEP changes in patients with clinically isolated syndrome (CIS) in relation to clinical and brainstem MRI findings. The second aim was to investigate whether the interpretation of the tSSEP results in the form of the tSSEP score enables better evaluation of the afferent trigeminal pathway involvement than analyzing each tSSEP parameter separately. METHODS: 115 consecutive CIS patients were enrolled from August 1, 2014 until March 1, 2016...
December 31, 2016: Croatian Medical Journal
https://www.readbyqxmd.com/read/28043054/dynamic-plantar-pressure-distribution-strength-capacity-and-postural-control-after-lisfranc-fracture-dislocation
#13
Alexander T Mehlhorn, Markus Walther, Tayfun Yilmaz, Lennart Gunst, Anja Hirschmüller, Norbert P Südkamp, Hagen Schmal
Substantial progress has been made in the operative treatment of Lisfranc fractures, however, the prognosis remains poor. We hypothesized that Lisfranc injuries change the postural control and muscle strength of the lower limb. Both are suggested to correlate with the clinical outcome and quality of life. 17 consecutive patients suffering from a Lisfranc fracture dislocation were registered, underwent open reduction and internal fixation and were followed-up for 50.5±25.7months (Mean±SDM). Biomechanical analysis of muscle strength capacities, postural control and plantar pressure distribution was assessed >6 month postoperatively...
December 19, 2016: Gait & Posture
https://www.readbyqxmd.com/read/28041532/laterality-and-body-ownership-effect-of-handedness-on-experience-of-the-rubber-hand-illusion
#14
M Smit, D I Kooistra, I J M van der Ham, H C Dijkerman
Body ownership has mainly been linked to the right hemisphere and larger interhemispheric connectivity has been shown to be associated with greater right hemispheric activation. Mixed-handed participants tend to have more interhemispheric connectivity compared to extreme handed participants. The aim of this study was to examine whether feelings of ownership as assessed with the rubber hand illusion (RHI) are differentiated by handedness and differed between the left and right hand. Sinistrals-, dextrals-, and mixed-handed individuals (n = 63) were subjected to the RHI...
January 2, 2017: Laterality
https://www.readbyqxmd.com/read/28039539/a-wearable-proprioceptive-stabilizer-for-rehabilitation-of-limb-and-gait-ataxia-in-hereditary-cerebellar-ataxias-a-pilot-open-labeled-study
#15
Luca Leonardi, Maria Gabriella Aceto, Christian Marcotulli, Giuseppe Arcuria, Mariano Serrao, Francesco Pierelli, Paolo Paone, Alessandro Filla, Alessandro Roca, Carlo Casali
The aim of this pilot study is to test the feasibility and effectiveness of a wearable proprioceptive stabilizer that emits focal mechanical vibrations in patients affected by hereditary cerebellar ataxias. Eleven adult patients with a confirmed genetic diagnosis of autosomal dominant spinocerebellar ataxia or Friedreich's ataxia were asked to wear an active device for 3 weeks. Assessments were performed at baseline, after the device use (T1), and 3 weeks after (T2). SARA, 9-HPT, PATA, 6MWT, and spatial and temporal gait parameters, measured with a BTS-G-Walk inertial sensor, were used as study endpoints...
December 31, 2016: Neurological Sciences
https://www.readbyqxmd.com/read/28033318/a-point-mutation-in-a-lincrna-upstream-of-gdnf-is-associated-to-a-canine-insensitivity-to-pain-a-spontaneous-model-for-human-sensory-neuropathies
#16
Jocelyn Plassais, Laetitia Lagoutte, Solenne Correard, Manon Paradis, Eric Guaguère, Benoit Hédan, Alix Pommier, Nadine Botherel, Marie-Christine Cadiergues, Philippe Pilorge, David Silversides, Maud Bizot, Mark Samuels, Carme Arnan, Rory Johnson, Christophe Hitte, Gilles Salbert, Agnès Méreau, Pascale Quignon, Thomas Derrien, Catherine André
Human Hereditary Sensory Autonomic Neuropathies (HSANs) are characterized by insensitivity to pain, sometimes combined with self-mutilation. Strikingly, several sporting dog breeds are particularly affected by such neuropathies. Clinical signs appear in young puppies and consist of acral analgesia, with or without sudden intense licking, biting and severe self-mutilation of the feet, whereas proprioception, motor abilities and spinal reflexes remain intact. Through a Genome Wide Association Study (GWAS) with 24 affected and 30 unaffected sporting dogs using the Canine HD 170K SNP array (Illumina), we identified a 1...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/28013232/memory-guided-stumbling-correction-in-the-hindlimb-of-quadrupeds-relies-on-parietal-area-5
#17
Carmen Wong, Gary Wong, Keir G Pearson, Stephen G Lomber
In complex environments, tripping over an unexpected obstacle evokes the stumbling corrective reaction, eliciting rapid limb hyperflexion to lift the leg over the obstruction. While stumbling correction has been characterized within a single limb in the cat, this response must extend to both forelegs and hindlegs for successful avoidance in naturalistic settings. Furthermore, the ability to remember an obstacle over which the forelegs have tripped is necessary for hindleg clearance if locomotion is delayed...
December 23, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/28007784/an-ensemble-of-regulatory-elements-controls-runx3-spatiotemporal-expression-in-subsets-of-dorsal-root-ganglia-proprioceptive-neurons
#18
Elena Appel, Sarit Weissmann, Yehuda Salzberg, Kira Orlovsky, Varda Negreanu, Michael Tsoory, Calanit Raanan, Ester Feldmesser, Yael Bernstein, Orit Wolstein, Ditsa Levanon, Yoram Groner
The Runx3 transcription factor is essential for development and diversification of the dorsal root ganglia (DRGs) TrkC sensory neurons. In Runx3-deficient mice, developing TrkC neurons fail to extend central and peripheral afferents, leading to cell death and disruption of the stretch reflex circuit, resulting in severe limb ataxia. Despite its central role, the mechanisms underlying the spatiotemporal expression specificities of Runx3 in TrkC neurons were largely unknown. Here we first defined the genomic transcription unit encompassing regulatory elements (REs) that mediate the tissue-specific expression of Runx3...
December 1, 2016: Genes & Development
https://www.readbyqxmd.com/read/28007433/erratum-to-a-novel-path-to-chronic-proprioceptive-disability-with-oxaliplatin-distortion-of-sensory-encoding-neurobiol-dis-95-2016-54-65
#19
Jacob A Vincent, Krystyna B Wieczerzak, Hanna M Gabriel, Paul Nardelli, Mark M Rich, Timothy C Cope
No abstract text is available yet for this article.
February 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28003412/dicer-maintains-the-identity-and-function-of-proprioceptive-sensory-neurons
#20
Sean Michael O'Toole, Monica M Ferrer, Jennifer Mekonnen, Haihan Zhang, Yasuyuki Shima, David R Ladle, Sacha B Nelson
Neuronal cell identity is established during development and must be maintained throughout an animal's life (Fishell and Heintz 2013). Transcription factors critical for establishing neuronal identity can be required for maintaining it (Deneris and Hobert 2014). Post-transcriptional regulation also plays an important role in neuronal differentiation (Bian and Sun 2011), but its role in maintaining cell identity is less established. To better understand how post-transcriptional regulation might contribute to cell identity, we examined the proprioceptive neurons in the dorsal root ganglion (DRG), a highly specialized sensory neuron class, with well established properties that distinguish them from other neurons in the ganglion...
December 21, 2016: Journal of Neurophysiology
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