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https://www.readbyqxmd.com/read/27923188/electrophysiology-in-fisher-syndrome
#1
REVIEW
Satoshi Kuwabara, Yukari Sekiguchi, Sonoko Misawa
Fisher syndrome (FS), a variant of Guillain-Barré syndrome (GBS), is characterized by the clinical triad of ophthalmoplegia, ataxia, and areflexia. The lesion sites for these unique clinical features include the oculomotor nerves and group 1a neurons in the dorsal root ganglion, and the presence of FS is determined by the expression of ganglioside GQ1b in the human nervous system. Neurophysiological findings suggest that ataxia and areflexia are due to an impaired proprioceptive afferent system. Typically, the soleus H-reflex is absent and a body-sway analysis using posturography shows a 1-Hz peak, which indicates proprioception dysfunction...
November 20, 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27923177/the-effect-of-exergaming-on-knee-proprioception-in-older-men-a-randomized-controlled-trial
#2
Hassan Sadeghi, Mohammad Nazrul Hakim, Tengku Aizan Hamid, Saidon Bin Amri, Mohsen Razeghi, Mohammadreza Farazdaghi, Elham Shakoor
BACKGROUND: Proprioception is the ability to sense the body position, muscle sense, joint stability and posture. As balance decreases during the process of aging, knee proprioception has a critical role in body balance and daily activities. Exergaming has shown to be a potentially effective and more enjoyable form of exercise delivery. OBJECTIVE: The purpose of this study was to determine the effect of an 8-week Xbox Kinect exercise program on knee proprioception in healthy older adults...
November 23, 2016: Archives of Gerontology and Geriatrics
https://www.readbyqxmd.com/read/27922559/botulinum-toxin-type-a-bont-a-injections-of-the-corrugator-muscles-for-aesthetics-and-depression
#3
Connie Brennan
The treatment of glabellar lines with botulinum toxin type-A (BoNT-A) is a staple for aesthetic providers who specialize in facial rejuvenation. Clinical efforts are currently underway to substantiate upper facial injections (the corrugator muscles are the target muscles) of BoNT-A as an antidepression therapy. This article describes the origin of "facial feedback" by Charles Darwin nearly 150 years ago, as well as "emotional proprioception"-2 neuroanatomical concepts that help provide the scientific rationale behind the general influence facial muscles have on the emotional centers of the brain, and, specifically, how the corrugator muscles-involved with frowning-promote a gloomy mood...
October 2016: Plastic Surgical Nursing
https://www.readbyqxmd.com/read/27915368/touch-contingent-visual-motion-perception-tactile-events-drive-visual-motion-perception
#4
Ryo Teraoka, Wataru Teramoto
It has recently been demonstrated that the brain rapidly forms an association between concurrently presented sound sequences and visual motion. Once this association has been formed, the associated sound sequence can drive visual motion perception. This phenomenon is known as "sound-contingent visual motion perception" (SCVM). In the present study, we addressed the possibility of a similar association involving touch instead of audition. In a 9-min exposure session, two circles placed side by side were alternately presented to produce apparent motion in a horizontal direction...
December 3, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27912047/biallelic-loss-of-proprioception-related-piezo2-causes-muscular-atrophy-with-perinatal-respiratory-distress-arthrogryposis-and-scoliosis
#5
Andrea Delle Vedove, Markus Storbeck, Raoul Heller, Irmgard Hölker, Malavika Hebbar, Anju Shukla, Olafur Magnusson, Sebahattin Cirak, Katta M Girisha, Mary O'Driscoll, Bart Loeys, Brunhilde Wirth
No abstract text is available yet for this article.
December 1, 2016: American Journal of Human Genetics
https://www.readbyqxmd.com/read/27910172/imaging-diagnosis-imaging-and-histopathologic-characteristics-of-a-vertebral-hamartoma-in-a-cat
#6
Frances E Taylor-Brown, Christopher R Lamb, Henny Martineau, Clare Muir, Elsa Beltran
A 9-month-old domestic shorthair cat had progressive ambulatory paraparesis, proprioceptive ataxia, and thoracolumbar hyperesthesia. An extradural mass affecting the left pedicle and lamina of the second lumbar vertebra (L2) causing marked spinal cord impingement was identified in magnetic resonance (MR) images. The mass was predominantly calcified in computed tomographic (CT) images. A hemilaminectomy was performed to resect the mass. Clinical signs were greatly improved at 12-month follow-up. The histopathologic diagnosis was vascular hamartoma...
December 1, 2016: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/27909675/arthroscopic-primary-repair-of-proximal-anterior-cruciate-ligament-tears
#7
Gregory S DiFelice, Jelle P van der List
In a select group of patients with proximal anterior cruciate ligament (ACL) tears, primary repair can be a useful technique. Preservation of the native ACL may be advantageous for proprioceptive function and is thought to restore normal knee joint kinematics. The procedure is a less morbid and more conservative surgical approach to restore knee stability. Primary repair is preferably performed in the acute setting because of better healing capacity and tissue quality. We present the surgical technique of arthroscopic primary ACL repair with suture anchors in patients with proximal tears and excellent tissue quality...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909402/upright-perception-and-ocular-torsion-change-independently-during-head-tilt
#8
Jorge Otero-Millan, Amir Kheradmand
We maintain a stable perception of the visual world despite continuous movements of our eyes, head and body. Perception of upright is a key aspect of such orientation constancy. Here we investigated whether changes in upright perception during sustained head tilt were related to simultaneous changes in torsional position of the eyes. We used a subjective visual vertical (SVV) task, modified to track changes in upright perception over time, and a custom video method to measure ocular torsion simultaneously. We tested 12 subjects in upright position, during prolonged (~15 min) lateral head tilts of 20 degrees, and also after the head returned to upright position...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27904719/does-cruciate-retaining-total-knee-arthroplasty-show-better-quadriceps-recovery-than-posterior-stabilized-total-knee-arthroplasty-objective-measurement-with-a-dynamometer-in-102-knees
#9
Kye-Youl Cho, Kang-Il Kim, Sang-Jun Song, Dae-Kyung Bae
BACKGROUND: Cruciate-retaining (CR) prostheses have been considered to produce more physiologic femoral rollback, provide better proprioception, and result in better quadriceps recovery than posterior-stabilized (PS) prostheses after total knee arthroplasty (TKA). However, there are very few studies demonstrating these benefits in an objective manner. We investigated whether CR-TKA could result in (1) better quadriceps recovery; (2) a greater proportion of patients with beyond the preoperative level of recovery; and (3) better clinical outcomes than PS-TKA...
December 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27903640/differential-effect-of-visual-motion-adaption-upon-visual-cortical-excitability
#10
Astrid J A Lubeck, Angelique Van Ombergen, Hena Ahmad, Jelte E Bos, Floris L Wuyts, Adolfo M Bronstein, Qadeer Arshad
OBJECTIVE: 1) To probe the effects of visual motion adaptation upon, early visual and V5/MT cortical excitability and 2) To investigate whether or not changes in cortical excitability following visual motion adaptation are related to the degree of visual dependency, i.e. an overreliance on visual cues compared to vestibular or proprioceptive cues. METHODS: Participants were exposed to a roll-motion visual stimulus pre, during and post visual motion adaptation. At these stages 20 TMS pulses at phosphene-threshold values were applied over early visual and V5/MT cortical areas from which the probability of eliciting a phosphene was calculated...
November 30, 2016: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27900187/mobility-proprioception-strength-and-fms-as-predictors-of-injury-in-professional-footballers
#11
Jonathan Yeung, Andrew Cleves, Hywell Griffiths, Len Nokes
BACKGROUND: The premise of this study was to investigate if anthropometric variables such as mobility, proprioception, strength and modified Functional Movement Screen (mFMS) could be used as primary indicators of injury risk in an English Championship division football team. This study focused on moderate injuries occurring in the lower extremities, during the 2014/2015 competitive season. METHODS: To differentiate between minor, moderate and severe injuries, this study classified moderate injuries as an injury with an average injury severity of 2-28 days...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27899880/elbow-matching-accuracy-in-young-and-elderly-humans-under-unusual-mechanical-constraints
#12
Vera L Talis, Yuri S Levik
Experiment was carried out to study the proprioception accuracy of elderly (61-83 years old) and young (22-36 years old) subjects during contralateral elbow matching in sagittal plane. The subjects performed the task under ordinary condition and under experimental condition (matching forearm attached to the rocking cylindrical platform of low (LS), or high (HS) height, so that the elbow flexion was associated with tilting movement of the support and with backward movement of the upper arm). Control matching of young and elderly subjects does not differ significantly in terms of constant and absolute error...
2016: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/27898852/horse-species-symposium-biomechanics-of-the-exercising-horse
#13
Hilary M Clayton
In spite of having large height and body mass, horses are cursorial animals with an extensive gait repertoire and considerable athletic abilities. The limbs have evolved so that the heavy musculature is confined to the proximal limbs while the distal limbs are light in weight with a single functional digit and long, lightweight tendons to move and support the distal joints. These adaptations reduce the moment of inertia and decrease the energy expended to protract and retract the limbs during locomotion. There is a division of labor between the forelimbs, which have a pillar-like construction specialized for weight bearing, and the hind limbs, in which the more angulated joints provide leverage for the generation of propulsion...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27895574/robot-assisted-rehabilitation-of-ankle-plantar-flexors-spasticity-a-3-month-study-with-proprioceptive-neuromuscular-facilitation
#14
Zhihao Zhou, Yao Sun, Ninghua Wang, Fan Gao, Kunlin Wei, Qining Wang
In this paper, we aim to investigate the effect of proprioceptive neuromuscular facilitation (PNF)-based rehabilitation for ankle plantar flexors spasticity by using a Robotic Ankle-foot Rehabilitation System (RARS). A modified robot-assisted system was proposed, and seven poststroke patients with hemiplegic spastic ankles participated in a 3-month robotic PNF training. Their impaired sides were used as the experimental group, while their unimpaired sides as the control group. A robotic intervention for the experimental group started from a 2-min passive stretching to warming-up or relaxing the soleus and gastrocnemius muscles and also ended with the same one...
2016: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/27888072/movement-related-cortical-magnetic-fields-associated-with-self-paced-tongue-protrusion-in-humans
#15
Hitoshi Maezawa, Hidetoshi Oguma, Yoshiyuki Hirai, Kazunari Hisadome, Hideaki Shiraishi, Makoto Funahashi
Sophisticated tongue movements are coordinated finely via cortical control. We elucidated the cortical processes associated with voluntary tongue movement. Movement-related cortical fields were investigated during self-paced repetitive tongue protrusion. Surface tongue electromyograms were recorded to determine movement onset. To identify the location of the primary somatosensory cortex (S1), tongue somatosensory evoked fields were measured. The readiness fields (RFs) over both hemispheres began prior to movement onset and culminated in the motor fields (MFs) around movement onset...
November 22, 2016: Neuroscience Research
https://www.readbyqxmd.com/read/27886017/influence-of-proprioceptive-insoles-on-spinal-curvature-in-patients-with-slight-idiopathic-scoliosis
#16
Christine Noll, Vanessa Steitz, Dorothea Daentzer
PURPOSE: Proprioceptive insoles are known to influence the functions of posture and gait by modulations of the sensory structures at the sole of the foot. Literature has shown that they could improve the position of the upper-body in patients with postural complaints of the musculoskeletal system. The aim of this study was to evaluate the influence of proprioceptive insoles on the spinal curvature in patients with slight idiopathic scoliosis. PATIENTS AND METHODS: Eighteen patients were included in this prospective, single-centre, randomized study...
November 18, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27880894/requirement-for-dicer-in-maintenance-of-monosynaptic-sensory-motor-circuits-in-the-spinal-cord
#17
Fumiyasu Imai, Xiaoting Chen, Matthew T Weirauch, Yutaka Yoshida
In contrast to our knowledge of mechanisms governing circuit formation, our understanding of how neural circuits are maintained is limited. Here, we show that Dicer, an RNaseIII protein required for processing microRNAs (miRNAs), is essential for maintenance of the spinal monosynaptic stretch reflex circuit in which group Ia proprioceptive sensory neurons form direct connections with motor neurons. In postnatal mice lacking Dicer in proprioceptor sensory neurons, there are no obvious defects in specificity or formation of monosynaptic sensory-motor connections...
November 22, 2016: Cell Reports
https://www.readbyqxmd.com/read/27874176/effects-of-tai-chi-on-cognition-and-fall-risk-in-older-adults-with-mild-cognitive-impairment-a-randomized-controlled-trial
#18
Somporn Sungkarat, Sirinun Boripuntakul, Nipon Chattipakorn, Kanokwan Watcharasaksilp, Stephen R Lord
OBJECTIVES: To examine whether combined center- and home-based Tai Chi training can improve cognitive ability and reduce physiological fall risk in older adults with amnestic mild cognitive impairment (a-MCI). DESIGN: Randomized controlled trial. SETTING: Chiang Mai, Thailand. PARTICIPANTS: Adults aged 60 and older who met Petersen's criteria for multiple-domain a-MCI (N = 66). INTERVENTION: Three weeks center-based and 12 weeks home-based Tai Chi (50 minutes per session, 3 times per week)...
November 22, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27871658/rehabilitation-principles-of-the-anterior-cruciate-ligament-reconstructed-knee-twelve-steps-for-successful-progression-and-return-to-play
#19
REVIEW
Kevin E Wilk, Christopher A Arrigo
The rehabilitation process begins immediately after injury to the anterior cruciate ligament (ACL). The goal of preoperative rehabilitation is to prepare the patient for surgery. Current rehabilitation programs focus on strengthening exercises and proprioceptive and neuromuscular control drills to provide a neurologic stimulus. It is also important to address preexisting factors, especially for the female athlete, that may predispose to future injury, such as hip and hamstring weakness. Our goal in the rehabilitation program is to restore full, unrestricted function and to assist the patient to return to 100% of the preinjury level while achieving excellent long-term outcomes...
January 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27871018/is-lower-peripheral-information-weighted-differently-as-a-function-of-step-number-during-step-climbing
#20
Valentina Graci, Marco Rabuffetti, Carlo Frigo, Maurizio Ferrarin
The importance of peripheral visual information during stair climbing and how peripheral visual information is weighted as a function of step number during step climbing is unclear. Previous authors postulated that the knowledge of predictable characteristics of the steps may decrease reliance on foveal vision and transfer the online visual guidance of stair climbing to peripheral vision. Hence the aim of this study was to investigate if and how the occlusion of the lower peripheral visual field influenced stair climbing and if peripheral visual information was weighted differently between steps...
November 13, 2016: Gait & Posture
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