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Somatosensory & Motor Research

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https://www.readbyqxmd.com/read/29334840/transcallosal-conduction-in-paroxysmal-kinesigenic-dyskinesia
#1
Tayfun Kasikci, Semai Bek, Guray Koc, Mehmet Yucel, Yasar Kutukcu, Zeki Odabasi
OBJECTIVES: Detecting whether a possible disequilibrium between the excitatory and inhibitory interhemispheric interactions in paroxysmal kinesigenic dyskinesia (PKD) exists. METHODS: This study assessed measures of motor threshold, motor evoked potential latency, the cortical silent period, the ipsilateral silent period and the transcallosal conduction time (TCT) in PKD patients. Data were compared between the clinically affected hemisphere (aH) and the fellow hemisphere (fH)...
January 15, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29334308/neuromuscular-degenerative-effects-of-ankaferd-blood-stopper%C3%A2-in-mouse-sciatic-nerve-model
#2
Ramazan Üstün, Elif Kaval Oğuz, Çağrı Delilbaşı, Ayşe Şeker, Filiz Taşpınar, Mehmet Reşit Öncü, Ahmet Regaip Oğuz
Purpose Ankaferd Blood Stopper® (ABS), a licenced medicinal herbal extract, is commonly used as an effective topical haemostatic agent. This study is designed to investigate whether topical ABS application may cause peripheral nerve degeneration and neuromuscular dysfunction in a mouse sciatic nerve model. Methods Twenty mice were randomly divided into two groups; an ABS treated experimental group and a saline-treated control group. Left sciatic nerves were treated with 0.3 ml of ABS in the experimental group and 0...
January 15, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29320897/changes-in-resting-motor-threshold-of-the-tongue-with-normal-aging-and-stroke
#3
Ivy Ka Yu Cheng, Edwin Man Lai Yiu, Karen Man Kei Chan
AIM OF STUDY: To examine the resting motor threshold of the tongue in healthy adults and stroke survivors. METHODS: Thirty-five healthy adults were classified into three groups: Group 1 (19-38 years; n = 11), Group 2 (50-64 years; n = 12) and Group 3 (66-78 years; n = 12). Six chronic stroke survivors (mean age =59 years, SD = 9.1 years) were recruited (Group 4). The resting motor thresholds (RMTs) of the tongue were measured and compared (i) among the four groups and (ii) between stroke survivors and age-matched healthy adults...
January 10, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29318933/comparing-auditory-visual-and-vibrotactile-cues-in-individuals-with-parkinson-s-disease-for-reducing-risk-of-falling-over-different-types-of-soil
#4
Johannes C Ayena, Louis E Tremblay, Martin J-D Otis, Bob-Antoine J Ménélas
INTRODUCTION: Several researchers have demonstrated the positive benefits of auditory and visual cueing in the gait improvements among individuals with Parkinson's disease (PD). However, few studies have evaluated the role of vibrotactile cueing when compared to auditory and visual cueing. This paper compares how these stimuli affect the risk of falling while walking on six types of soil (concrete, sand, parquet, broken stone, two types of carpet). METHODS: An instrumented Timed Up and Go (iTUG) test served to evaluate how audio, visual and vibrotactile cueing can affect the risk of falling of elderly...
January 10, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29307252/a-comparison-of-h-reflex-in-the-triceps-surae-muscle-group-in-patients-with-s1-radiculopathy
#5
Mohammad Reza Emad, Hadi Momeninejad, Babak Pourabbas Tahvildari, Hossein Yari
Despite differences in the anatomical and physiological characteristics of the medial gastrocnemius (MG), lateral gastrocnemius (LG), and soleus (Sol) muscles, it is common practice to investigate them as single triceps surae H-reflex recordings. The aim of this study was to compare the latencies of H-reflex recordings from the Sol, MG, and LG in patients with explicit magnetic resonance imaging (MRI) evidence of unilateral S1 radiculopathy and also compare their diagnostic yield in varied clinical characteristics (i...
January 8, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29295640/pedometer-determined-physical-activity-levels-of-healthy-children-and-children-with-down-s-syndrome
#6
Adel A Alhusaini, Misfer Ali Al-Walah, Ganeswara Rao Melam, Syamala Buragadda
PURPOSE: Children with Down's syndrome (DS) are considered sedentary and less engaged in recommended physical activity (PA) levels. This study compared the PA levels between children with DS and healthy children in Saudi Arabia. METHODS: The study included 85 children divided into two groups. The DS group comprised 37 children with DS aged 8-12 years recruited from the Down Syndrome Charitable Association and Al-Nahda Schools for DS. The healthy group comprised 41 healthy children aged 8-12 years recruited from regular schools in the same region...
January 3, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29057708/characteristics-of-attention-related-body-sensations-temporal-stability-and-associations-with-measures-of-body-focus-affect-sustained-attention-and-heart-rate-variability
#7
Benedek T Tihanyi, Eszter Ferentzi, Ferenc Köteles
AIM: This study investigated the temporal stability and correlates of attention-related body sensations that emerge without external stimulation during rest and due to focused attention on a body part. MATERIALS: To assess attention-related body sensations, participants were asked to focus on a freely chosen body area with closed eyes, and had to report whether the sensation of that area had changed. Self-report questionnaires were used to assess various aspects of body focus (body awareness, body responsiveness, somatosensory amplification, subjective somatic symptoms), and positive and negative affectivity...
October 23, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29025294/the-role-of-the-ipsilesional-side-in-the-rehabilitation-of-post-stroke-subjects
#8
Augusta Silva, Andreia S P Sousa, Cláudia Costa Silva, Rubim Santos, João Manuel R S Tavares, Filipa Sousa
Most stroke lesions occur in the middle cerebral artery territory, presenting a high probability of damage of pathways with predominant ipsilesional disposition, mainly related to postural control. Despite the high probability of bilateral postural control dysfunction based on neuroanatomical fundaments, both research and clinical rehabilitation involving stroke subjects have been focused on contralesional side (also named affected side) impairments, while ipsilesional side (also named non-affected side) impairments have been attributed to an adaptive strategy...
October 12, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28952410/how-does-cryotherapy-effect-ankle-proprioception-in-healthy-individuals
#9
Daniel Houten, Darren Cooper
Objectives To investigate how a 15-min cryotherapy intervention effects proprioception by measuring joint positional sense (JPS) and static single legged balance. Design Repeated measures design. Setting Laboratory. Participants Eighteen healthy university sports team students (11 males, 7 females) aged between 20 and 21 years old. Main outcome measures Participants were treated with 15 min of Aircast Cryo-cuff. The subject's skin temperature was measured before and immediately after 15 min of cryotherapy treatment...
September 27, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28934887/somatosensory-cortex-excitability-changes-due-to-differences-in-instruction-conditions-of-motor-imagery
#10
Takashi Hasegawa, Hironori Miyata, Keita Nishi, Akira Sagari, Takefumi Moriuchi, Takashi Matsuo, Takayuki Tabira, Toshio Higashi
Purpose Vivid motor imagery appears to be associated with improved motor learning efficiency. However, the practical difficulties in measuring vivid motor imagery warrant new analytical approaches. The present study aimed to determine the instruction conditions for which vividness in motor imagery could be more easily seen and the excitability of the sensory cortex as it relates to the motor image. Materials and methods In total, 15 healthy, right-handed volunteers were instructed to imagine grasping a rubber ball under a verbal-only instruction condition (verbal condition), a verbal + visual instruction condition (visual condition), and a verbal + execution (physically grasping a real ball) condition (execution condition)...
September 21, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28891404/adapted-morris-water-maze-protocol-to-prevent-interference-from-confounding-motor-deficits-on-cognitive-functioning
#11
Mattias De Coninck, Debby Van Dam, Chris Van Ginneken, Peter Paul De Deyn
Purpose/aim of the study: Cognitive functioning in the Morris Water Maze (MWM) is assumed to be reflected by path length. In this study, the interference of motor deficits, as a confounding factor on cognitive functioning, was assessed by means of a lateralization study with hemicerebellectomized (HCX) mice. This model is characterized by motor deficits restricted to the lesion side, allowing comparison within the model itself (left vs. right), rather than the effect of the manipulation on this measure (experimental vs...
September 10, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29096588/non-nmda-receptor-mediated-vibrotactile-responses-of-neurons-from-the-hindpaw-representation-in-the-rat-si-cortex
#12
Bige Vardar, Burak Güçlü
Non-NMDA receptor-mediated vibrotactile responses of neurons from the hindpaw representation were investigated in the rat SI cortex. We recorded single-unit spikes evoked by sinusoidal (duration: 500 ms; frequency: 5, 40, and 250 Hz; amplitude: 100 μm peak-to-peak) stimulation of the glabrous skin. The responses were obtained with microinjection of aCSF (sham), bicuculline, and AMPA near the isolated neurons in anaesthetized rats. Blocking most of the NMDA receptors by ketamine revealed local dynamics differentially modulated by each drug...
September 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29096587/proprioceptive-neuromuscular-facilitation-increases-alpha-absolute-power-in-the-dorsolateral-prefrontal-cortex-and-superior-parietal-cortex
#13
Lysnara Lial, Rayele Moreira, Luan Correia, Alzira Andrade, Ane Caroline Pereira, Ricardo Lira, Rogério Figueiredo, Fernando Silva-Júnior, Marco Orsini, Pedro Ribeiro, Bruna Velasques, Maurício Cagy, Silmar Teixeira, Victor Hugo Bastos
The physiotherapist's clinical practice includes proprioceptive neuromuscular facilitation (PNF), which is a treatment concept that accelerates the response of neuromuscular mechanisms through spiral and diagonal movements. The adaptations that occur in the nervous system following PNF are still poorly described in the literature. Thus, this study had a goal to investigate the electrophysiological changes in the fronto-parietal circuit during PNF and movement in sagittal and diagonal patterns. This study included 30 female participants, who were divided into three groups (control, PNF, and flexion groups)...
September 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28760048/protective-effect-of-alpha-linolenic-acid-on-gentamicin-induced-ototoxicity-in-mice
#14
Halil Mahir Kaplan, Ergin Şingirik, Kıvılcım Eren Erdoğan, Figen Doran
Alpha-linolenic acid is one of the fatty acids known as omega 3. Previous studies have shown the antioxidant and anti-inflammatory effects of alpha-linolenic acid, which prevented cell damage by inhibiting apoptotic pathway. Also, it is known that gentamicin activates apoptotic mediators and causes necrosis in the kidney. Due to this reason, we planned a study to evaluate the protective effects of alpha-linolenic acid on gentamicin induced ototoxicity by evaluating inflammation and apoptotic mediators. For this purpose, 100 mg/kg gentamicin (i...
July 31, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28691588/the-relation-between-the-motor-evoked-potential-and-diffusion-tensor-tractography-for-the-corticospinal-tract-in-chronic-hemiparetic-patients-with-cerebral-infarct
#15
Sung Ho Jang, Dea Hee Kim, Seong Ho Kim, Jeong Pyo Seo
We examined the relation between the results of transcranial magnetic stimulation (TMS) and diffusion tensor tractography (DTT) for the corticospinal tract (CST) in chronic hemiparetic patients with a middle cerebral artery (MCA) territory infarct. The amplitude of motor evoked potential (MEP) was closely related to the FN of the CST on DTT in chronic hemiparetic patients with an MCA infarct. We believe that our results would be helpful in more precise estimation of the CST.
July 9, 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28595477/positive-effects-of-plantar-vibration-training-for-the-treatment-of-diabetic-peripheral-neuropathy-a-pilot-study
#16
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/28675953/utility-of-nociceptive-flexion-reflex-threshold-and-bispectral-index-to-predict-movement-responses-under-propofol-anaesthesia
#17
Axel Jakuscheit, Matthias J Posch, Stefanos Gkaitatzis, Lisa Neumark, Mark Hackbarth, Martin Schneider, Gregor Lichtner, Jan H Baars, Falk von Dincklage
INTRODUCTION: The nociceptive flexion reflex threshold (NFRT) is a promising tool to monitor analgesia during general anaesthesia. Clinical studies have shown that the NFRT allows to predict movement responses to painful stimuli under a combined anaesthetic regime of sedative and opioid agents. Experimental studies indicated that the NFRT is also able to predict such movement responses under an exclusively sedative regime like propofol mono-anaesthesia. Therefore, we performed this study to investigate the ability of the NFRT to predict movement responses to painful stimuli in patients during a clinical propofol mono-anaesthesia...
June 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
#18
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...
June 2017: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/28535701/day-to-day-features-of-soleus-stretch-reflexes-in-sub-acute-stroke-patients
#19
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
#20
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
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