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Somatosensory & Motor Research

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https://www.readbyqxmd.com/read/28595477/positive-effects-of-plantar-vibration-training-for-the-treatment-of-diabetic-peripheral-neuropathy-a-pilot-study
#1
Katerina Stambolieva, Dorina Petrova, Mariya Irikeva
PURPOSE: To evaluate the effectiveness of 8-week low-frequency plantar vibration training on patients with sensorimotor diabetic peripheral neuropathy (DPN). PARTICIPANTS: Twelve patients took part in the investigation. RESULTS: An increase of the nerve conductive velocity of soral and peroneal nerves of feet, increased postural stability, and disappearance of the pain and tingling were observed. CONCLUSION: The obtained results provide evidence for beneficial effects of 8-week plantar vibration training in patients with DPN...
June 9, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28535701/day-to-day-features-of-soleus-stretch-reflexes-in-sub-acute-stroke-patients
#2
Peter William Stubbs, Asger Roer Pedersen, Jørgen Feldbæk Nielsen
The aim of the study was to assess the reliability and variability of stretch reflex magnitude (SRmag) in sub-acute stroke patients. For testing, rapid dorsiflexion stretches were induced 24 h apart in 22 patients and 34 controls. SRmag between sessions in patients and controls was not different and the SRmag on the more-affected side was significantly larger than the less-affected, dominant, and non-dominant sides. The SRmag was consistent between sessions. Therefore, patients were not as variable between sessions as we had hypothesized...
May 24, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28460564/effect-of-tpmpa-gabac-receptor-antagonist-on-neuronal-response-properties-in-rat-barrel-cortex
#3
Elham Mohammadi, Ali Shamsizadeh, Elham Salari, Iman Fatemi, Mohammad Allahtavakoli, Ali Roohbakhsh
GABAC receptors are ligand-gated chloride channels and have important roles in some neurological functions like vision. Recent investigations demonstrated that these receptors are also expressed in the somatosensory cortex. In this study, we investigated the effect of (1,2,5,6-tetrahydropyridin-4-yl)methylphosphinic acid (TPMPA) (GABAC receptor antagonist) on the properties of the neuronal response to natural stimuli (whisker deflection) in deep layers of rat barrel cortex. Twenty-eight male Wistar rats, weighing 230-260 g, were used in this study...
May 1, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28446051/sleep-deprivation-sensitizes-human-craniofacial-muscles
#4
Eva Szuchy Kristiansen, Louise Skou Nielsen, Siv Sofie Christensen, Sofia Hedvig Christina Botvid, Jeppe Nørgaard Poulsen, Parisa Gazerani
It is unknown whether and how sleep deprivation influences craniofacial muscle sensitivity in healthy humans. We investigated whether total sleep deprivation (TSD) and one night of recovery sleep (RS) can alter mechanical pain sensitivity in temporal and masseter muscles. Fifteen healthy volunteers participated in three consecutive sessions. Pressure pain thresholds were measured on the temporal and masseter muscles. Both temporal and masseter muscles became sensitized after 24 h of TSD. RS reversed the muscle sensitization...
April 26, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28427299/effects-of-low-frequency-repetitive-transcranial-magnetic-stimulation-on-upper-extremity-motor-recovery-and-functional-outcomes-in-chronic-stroke-patients-a-randomized-controlled-trial
#5
Ayhan Aşkın, Aliye Tosun, Ümit Seçil Demirdal
BACKGROUND: Repetitive transcranial magnetic stimulation (rTMS) was suggested as a preconditioning method that would increase brain plasticity and that it would be optimal to combine rTMS with intensive rehabilitation. OBJECTIVE: To assess the efficacy of inhibitory rTMS on upper extremity motor recovery and functional outcomes in chronic ischemic stroke patients. METHODS: In this randomized controlled trial, experimental group received low-frequency (LF) rTMS to the primary motor cortex of the unaffected side + physical therapy (PT), and control group received PT...
April 20, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28423977/age-associated-differences-in-motor-output-variability-and-coordination-during-the-simultaneous-dorsiflexion-of-both-feet
#6
Amanda Marchini, Rafael Pereira, Wellington Pedroso, Evangelos Christou, Osmar Pinto Neto
Older adults are more variable than young adults on tasks that demand the simultaneous control of more than one effector, and the difference between age groups may be related to their different capacity of coordinating the force output of the involved effectors. The goal of this study was to determine whether age-associated differences in motor output variability during tasks involving the simultaneous dorsiflexion of two feet can be partially explained by differences in coordination and possibly attenuated by physical training...
April 19, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28393655/chewing-side-preference-is-associated-with-hemispheric-laterality-in-healthy-adults
#7
Selen Serel Arslan, Özgü İnal, Numan Demir, Merih Seval Ölmez, Aynur Ayşe Karaduman
Purpose To investigate if chewing side preference (CSP) can be used as an indicator of hemispheric laterality in healthy adults. Materials and methods Seventy-five individuals were included. The visual analogue scale (VAS) was used to determine CSP and laterality test for preferred peripheral organs. Results Significant correlation between CSP and hand, foot, ear, and eye side preference was found (r = .41, p < .001; r = .34, p = .003; r = .35, p = .03; r = .36, p = .002)...
April 10, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28372470/the-effect-of-a-haptic-biofeedback-system-on-postural-control-in-patients-with-stroke-an-experimental-pilot-study
#8
Kazuhiro Yasuda, Naomi Kaibuki, Hiroaki Harashima, Hiroyasu Iwata
BACKGROUND: Impaired balance in patients with hemiparesis caused by stroke is frequently related to deficits in the central integration of afferent inputs, and traditional rehabilitation reinforces excessive visual reliance by focusing on visual compensation. OBJECTIVE: The present study investigated whether a balance task involving a haptic biofeedback (BF) system, which provided supplementary vibrotactile sensory cues associated with center-of-foot-pressure displacement, improved postural control in patients with stroke...
April 3, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28325123/effect-of-stimulation-of-cold-receptors-with-menthol-on-emg-activity-of-quadriceps-muscle-during-low-load-contraction
#9
Tadayuki Tokunaga, Hitoshi Sugawara, Chigaya Tadano, Masuo Muro
PURPOSE: Facilitatory and inhibitory responses of spinal motor neurons are influenced by somatosensory input from the skin. The purpose of this study, employing electromyography, was to examine the neuromuscular changes that occur with menthol applied to the skin over the quadriceps muscle. METHODS: Forty-two healthy volunteers performed isometric knee extensions at 35% maximum voluntary contraction (MVC) in three groups (Adult Placebo, Adult Menthol, Older Adult Menthol)...
March 21, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28276837/5-hydroxymethylcytosine-5hmc-and-ten-eleven-translocation-1-3-tet1-3-proteins-in-the-dorsal-root-ganglia-of-mouse-expression-and-dynamic-regulation-in-neuropathic-pain
#10
Alexander G Chamessian, Yawar J Qadri, Matthew Cummins, Michele Hendrickson, Temugin Berta, Thomas Buchheit, Thomas Van de Ven
Epigenetic mechanisms are increasingly implicated in chronic pain pathology. In this study, we demonstrate that the novel epigenetic mark 5-hydroxymethylcytosine (5hmC) is present in dorsal root ganglia (DRG) neurons and glia, and its levels increase following nerve injury. Furthermore, we show that the 5hmC-generating Ten-eleven translocation 1-3 (TET1-3) proteins are expressed in a cell-type specific manner in the DRG, with Tet3 displaying differential upregulation after injury, suggesting a potential role in neuropathic pain...
March 1, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28270049/barrels-xxix-barrels-go-hollywood
#11
Mathew H Evans, Joshua C Brumberg
Barrels XXIX brought together researchers focusing on the rodent barrel cortex and associated systems. The meeting revolved around three themes: thalamocortical interactions in motor control, touch in rodent, monkey, and humans, and the nature of the multisensory computations the brain makes. Over two days these topics were covered as well as many more presentations that focused on the physiology, behavior, and development of the rodent whisker-to-barrel cortex system.
March 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28270048/influence-of-transcutaneous-electrical-nerve-stimulation-conditions-on-disynaptic-reciprocal-ia-inhibition-and-presynaptic-inhibition-in-healthy-adults
#12
Kazuya Takeda, Shigeo Tanabe, Soichiro Koyama, Kosuke Ushiroyama, Yuki Naoi, Ikuo Motoya, Hiroaki Sakurai, Yoshikiyo Kanada
This study investigated the influence of stimulus conditions of transcutaneous electrical nerve stimulation (TENS) on disynaptic reciprocal Ia inhibition (RI) and presynaptic inhibition (D1 inhibition) in healthy adults. Eight healthy participants received TENS (stimulus frequencies of 50, 100, and 200 Hz) over the deep peroneal nerve and tibialis anterior (TA) muscle in the resting condition for 30 min. At pre- and post-intervention, the RI from the TA to the soleus (SOL) and D1 inhibition of the SOL alpha motor neuron were assessed by evoked electromyography...
March 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28270047/instruction-prioritization-in-task-based-balance-training-for-individuals-with-idiopathic-parkinson-s-disease
#13
Vaithiamanithi Perumal, Ganeswara Rao Melam, Adel A Alhusaini, Syamala Buragadda, Neha Sharma
The objective of the study was to evaluate the effect of prioritization of instruction in balance training for individuals with Parkinson's disease (PD). Thirty-six participants were evaluated before and after the training using the Berg Balance Scale, Dynamic Gait Index, and Geriatric Depression Scale. Results show that dual task training with variable priority instruction is as effective as single task training in improving the balance performance of individuals with idiopathic PD.
March 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28276838/modulation-of-prefrontal-cortex-with-anodal-tdcs-prevents-post-exercise-facilitation-interference-during-dual-task
#14
Carmen Concerto, Jacqueline Babayev, Rowan Mahmoud, Basil Rafiq, Eileen Chusid, Eugenio Aguglia, Diego Coira, Fortunato Battaglia
In this study we aimed to investigate whether transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex (DLPFC) reduces interference effects of a dual task (DT) on post-exercise facilitation (PEF) of the motor evoked potentials. Anodal tDCS reversed the DT interference on PEF after a non-fatiguing isometric contraction. We conclude that anodal DLPFC tDCS improves the ability to allocate attentional resources and modulates plastic adaptations across brain systems.
February 28, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28152665/vibration-parameters-affecting-vibration-induced-reflex-muscle-activity
#15
Muharrem Cidem, Ilhan Karacan, Halil Ibrahim Cakar, Mehmet Cidem, Oguz Sebik, Gizem Yilmaz, Kemal Sitki Turker, Safak Sahir Karamehmetoglu
PURPOSE: To determine vibration parameters affecting the amplitude of the reflex activity of soleus muscle during low-amplitude whole-body vibration (WBV). MATERIALS AND METHODS: This study was conducted on 19 participants. Vibration frequencies of 25, 30, 35, 40, 45, and 50 Hz were used. Surface electromyography, collision force between vibration platform and participant's heel measured using a force sensor, and acceleration measured using an accelerometer fixed to the vibration platform were simultaneously recorded...
February 2, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28140743/the-roles-of-motor-activity-and-environmental-enrichment-in-intellectual-disability
#16
Andrea De Giorgio
In people with intellectual disabilities, an enriched environment can stimulate the acquisition of motor skills and could partially repair neuronal impairment thanks to exploration and motor activity. A deficit in environmental and motor stimulation leads to low scores in intelligence tests and can cause serious motor skill problems. Although studies in humans do not give much evidence for explaining basic mechanisms of intellectual disability and for highlighting improvements due to enriched environmental stimulation, animal models have been valuable in the investigation of these conditions...
January 31, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28114839/detecting-neuronal-dysfunction-of-hand-motor-cortex-in-als-a-mrsi-study
#17
Yuzhou Wang, Xiaodi Li, Wenming Chen, Zhanhang Wang, Yan Xu, Jingpan Luo, Hanbo Lin, Guijun Sun
BACKGROUND: Although hand motor cortex (HMC) has been constantly used for identification of primary motor cortex in magnetic resonance spectroscopy (MRS) studies of amyotrophic lateral sclerosis (ALS), neurochemical profiles of HMC have never been assessed independently. As HMC has a constant location and the clinic-anatomic correlation between hand motor function and HMC has been established, we hypothesize that HMC may serve as a promising region of interest in diagnosing ALS. PATIENTS AND METHODS: Fourteen ALS patients and 14 age- and gender-matched healthy controls (HC) were recruited in this study...
January 23, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28112005/hemichorea-caused-by-nonketotic-hyperosmolar-state-a-case-report-and-review-of-the-literature
#18
Hafiz Khuram Raza, Jia Jing, Guiyun Cui, Xiaoqian Liang, Fang Hua, Zunsheng Zhang, Hai Tang, Hongjuan Shi, Hao Chen
Our report involves a case of hemichorea caused by the nonketotic hyperosmolar state. We have analyzed the clinical data and relevant features of a patient who presented herself to the Affiliated Hospital of Xuzhou Medical University. The patient had unilateral involuntary movements for 1 month. We discovered that her blood glucose levels were very high. The patient underwent computed tomography (CT), magnetic resonance imaging (MRI), and magnetic resonance angiography (MRA), indicating right basal ganglia lesion...
January 22, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28093011/individuals-with-dark-eyes-and-hair-exhibit-higher-pain-sensitivity
#19
Henrik Holmgaard, Eva Ørsnæs Hansen, Nhung Phuong Thi Dong, Laila Brøns Dixen, Gebbie Ann Rodriguez Nielsen, Jeppe Nørgaard Poulsen, Parisa Gazerani
Emerging evidence suggests that some phenotypic features, such as eye or hair colour, might predict pain. We investigated if light and dark eye and hair colour would influence pain in 60 healthy subjects divided in groups of 15 according to their eye-hair colour and gender. Pressure pain thresholds (PPTs), cold pressor test (CPT), and quality of the perceived pain were assessed. Findings indicated that dark pigmentation phenotype is more sensitive in response to CPT.
January 16, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/27915498/comparison-of-intraobserver-single-task-reliabilities-of-the-interactive-balance-system-ibs-and-vertiguard-in-asymptomatic-subjects
#20
René Schwesig, Lisa Hollstein, Stefan K Plontke, Karl-Stefan Delank, Georg Fieseler, Torsten Rahne
The intraobserver reliabilities of the Interactive Balance System (IBS) and Vertiguard were compared in 30 asymptomatic volunteers. Relative reliability for all IBS single tasks and parameters in the IBS was excellent (intraclass correlation coefficient, ICC ≥0.75). The ICC values ranged from 0.78 to 0.89. The ICC values of the Vertiguard system ranged from 0 to 0.75. The cumulative measure of injury risk of the Vertiguard system was highly reliable.
December 4, 2016: Somatosensory & Motor Research
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