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https://www.readbyqxmd.com/read/29235480/vocal-learning-promotes-patterned-inhibitory-connectivity
#1
Mark N Miller, Chung Yan J Cheung, Michael S Brainard
Skill learning is instantiated by changes to functional connectivity within premotor circuits, but whether the specificity of learning depends on structured changes to inhibitory circuitry remains unclear. We used slice electrophysiology to measure connectivity changes associated with song learning in the avian analog of primary motor cortex (robust nucleus of the arcopallium, RA) in Bengalese Finches. Before song learning, fast-spiking interneurons (FSIs) densely innervated glutamatergic projection neurons (PNs) with apparently random connectivity...
December 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29235424/fundamental-movement-skills-of-children-living-in-england-the-role-of-ethnicity-and-native-english-language
#2
Emma L J Eyre, Leanne Jaye Walker, Michael J Duncan
The development of fundamental movement skills (FMS) has been associated with children's general health, and, while there is evidence to suggest that age, gender, physical activity, and socioeconomic status relate to FMS, the relationship of ethnicity and language barriers to FMS competence has been underexplored. These factors may be of particular interest for South Asian (SA) children who have lower physical activity and increased risk of metabolic disease. This cross-sectional study examined ethnic and language differences in FMS among 218 ethnically diverse five-year-old children (61 White ethnic background, 91 SA, 29 Black ethnic background, and 37 other), some with English as a native language ( n = 90) and some with English as an additional language ( n = 75), all recruited from within central England...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/29234739/effects-of-cross-rearing-with-social-peers-on-myelination-in-the-medial-prefrontal-cortex-of-a-mouse-model-with-autism-spectrum-disorder
#3
Manabu Makinodan, Kazuki Okumura, Daisuke Ikawa, Yasunori Yamashita, Kazuhiko Yamamuro, Michihiro Toritsuka, Sohei Kimoto, Takahira Yamauchi, Takashi Komori, Yoshinori Kayashima, Hiroki Yoshino, Akio Wanaka, Toshifumi Kishimoto
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by impaired social interaction, poor communication skills, and repetitive/restrictive behaviors. Recent studies have indicated that early rehabilitative intervention can alleviate the symptoms of individuals with ASD. However, it remains unknown whether rehabilitative intervention can restore brain structures such as myelin, which generally shows abnormalities in individuals with ASD. Therefore, in the present study, we used a mouse model of ASD (BTBR mice) that demonstrated asocial behaviors and hypomyelination in the medial prefrontal cortex (mPFC) to investigate whether interaction with social peers (C57BL/6J mice) has an effect on myelination...
November 2017: Heliyon
https://www.readbyqxmd.com/read/29233801/getting-to-the-root-of-fine-motor-skill-performance-in-dentistry-brain-activity-during-dental-tasks-in-a-virtual-reality-haptic-simulation
#4
Suzanne Perry, Susan M Bridges, Frank Zhu, W Keung Leung, Michael F Burrow, Jamie Poolton, Rich Sw Masters
BACKGROUND: There is little evidence considering the relationship between movement-specific reinvestment (a dimension of personality which refers to the propensity for individuals to consciously monitor and control their movements) and working memory during motor skill performance. Functional near-infrared spectroscopy (fNIRS) measuring oxyhemoglobin demands in the frontal cortex during performance of virtual reality (VR) psychomotor tasks can be used to examine this research gap. OBJECTIVE: The aim of this study was to determine the potential relationship between the propensity to reinvest and blood flow to the dorsolateral prefrontal cortices of the brain...
December 12, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/29233080/mathematics-ability-and-related-skills-in-preschoolers-born-very-preterm
#5
Holly M Hasler, Natacha Akshoomoff
Children born very preterm (VPT) are at risk for academic, behavioral, and/or emotional problems. Mathematics is a particular weakness and better understanding of the relationship between preterm birth and early mathematics ability is needed, particularly as early as possible to aid in early intervention. Preschoolers born VPT (n = 58) and those born full term (FT; n = 29) were administered a large battery of measures within 6 months of beginning kindergarten. A multiple-mediation model was utilized to characterize the difference in skills underlying mathematics ability between groups...
December 12, 2017: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
https://www.readbyqxmd.com/read/29230170/the-dancing-brain-structural-and-functional-signatures-of-expert-dance-training
#6
Agnieszka Z Burzynska, Karolina Finc, Brittany K Taylor, Anya M Knecht, Arthur F Kramer
Dance - as a ritual, therapy, and leisure activity - has been known for thousands of years. Today, dance is increasingly used as therapy for cognitive and neurological disorders such as dementia and Parkinson's disease. Surprisingly, the effects of dance training on the healthy young brain are not well understood despite the necessity of such information for planning successful clinical interventions. Therefore, this study examined actively performing, expert-level trained college students as a model of long-term exposure to dance training...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29229548/tongue-protrusions-modify-the-syntax-of-skilled-reaching-for-food-by-the-mouse-evidence-for-flexibility-in-action-selection-and-shared-hand-mouth-central-modulation-of-action
#7
Ian Q Whishaw, Behroo Mirza Agha, Jessica R Kuntz, Qandeel, Jamshid Faraji, Majid H Mohajerani
Skilled reaching for food by the laboratory mouse has the appearance of an action pattern with a distinctive syntax in which ten submovements occur in an orderly sequence. A mouse locates the food by Sniffing, Lifts, Aims, Advances, and Shapes the hand to Pronate it over a food target that it Grasps, Retracts, and Withdraws to Release to its mouth for eating. The structure of the individual actions in the chain are useful for the study of the mouse motor system and contribute to the use of the mouse as a model of human neurological conditions...
December 8, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/29229503/characterization-of-early-onset-motor-deficits-in-the-pink1-mouse-model-of-parkinson-disease
#8
Cynthia A Kelm-Nelson, Alexander F L Brauer, Kelsey J Barth, Jacob M Lake, Mackenzie L K Sinnen, Forrest J Stehula, Cagla Muslu, Roberta Marongiu, Michael G Kaplitt, Michelle R Ciucci
In Parkinson disease (PD), a complex neurodegenerative disorder that affects nearly 10 million people worldwide, motor skills are significantly impaired. However, onset and progression of motor deficits and the neural correlates of these deficits are poorly understood. We used a genetic mouse model of PD (Pink1 -/-), with phenotypic similarities to human PD, to investigate the manifestation of early-onset sensorimotor deficits. We hypothesized this mouse model would show early vocalization and gross motor dysfunction that would be progressive in nature...
December 8, 2017: Brain Research
https://www.readbyqxmd.com/read/29229294/impact-of-dha-intake-in-a-mouse-model-of-synucleinopathy
#9
Katherine Coulombe, Olivier Kerdiles, Cyntia Tremblay, Vincent Emond, Manon Lebel, Anne-Sophie Boulianne, Mélanie Plourde, Francesca Cicchetti, Frédéric Calon
Polyunsaturated fatty acids omega-3 (n-3 PUFA), such as docosahexaenoic acid (DHA), have been shown to prevent, and partially reverse, neurotoxin-induced nigrostriatal denervation in animal models of Parkinson's disease (PD). However, the accumulation of α-synuclein (αSyn) in cerebral tissues is equally important to the pathophysiology. To determine whether DHA intake improves various aspects related to synucleinopathy, ninety male mice overexpressing human αSyn under the Thy-1 promoter (Thy1-αSyn) were fed one of three diets (specially formulated control, low n-3 PUFA or high DHA) and compared to non-transgenic C57/BL6 littermate mice exposed to a control diet...
December 8, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/29228356/dietary-intervention-rescues-myopathy-associated-with-neurofibromatosis-type-1
#10
Matthew A Summers, Thusitha Rupasinghe, Emily R Vasiljevski, Frances J Evesson, Kathy Mikulec, Lauren Peacock, Kate Gr Quinlan, Sandra T Cooper, Ute Roessner, David A Stevenson, David G Little, Aaron Schindeler
Neurofibromatosis type 1 (NF1) is an autosomal dominant genetic disorder with complex symptomology. In addition to a predisposition to tumors, children with NF1 can present with reduced muscle mass, global muscle weakness, and impaired motor skills, which can have a significant impact on quality of life. Genetic mouse models have shown a lipid storage disease phenotype may underlie muscle weakness in NF1. Herein we confirm that biopsy specimens from six individuals with NF1 similarly manifest features of a lipid storage myopathy, with marked accumulation of intramyocellular lipid, fibrosis, and mononuclear cell infiltrates...
December 8, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29223349/the-effect-of-cerebellar-transcranial-direct-current-stimulation-on-a-throwing-task-depends-on-individual-level-of-task-performance
#11
Nobuaki Mizuguchi, Takashi Katayama, Kazuyuki Kanosue
The effect of cerebellar transcranial direct current stimulation (tDCS) on motor performance remains controversial. Some studies suggest that the effect of tDCS depends upon task-difficulty and individual level of task performance. Here, we investigated whether the effect of cerebellar tDCS on the motor performance depends upon the individual's level of performance. Twenty-four naïve participants practiced dart throwing while receiving 2mA-cerebellar tDCS for 20min under three stimulus conditions (anodal-, cathodal-, and sham-tDCS) on separate days with a double-blind, counter-balanced cross-over design...
December 6, 2017: Neuroscience
https://www.readbyqxmd.com/read/29223033/the-mediating-role-of-cognitive-ability-on-the-relationship-between-motor-proficiency-and-early-academic-achievement-in-children
#12
Geneviève Cadoret, Nathalie Bigras, Stéphanie Duval, Lise Lemay, Tania Tremblay, Julie Lemire
The aim of this study was to examine the relationship between motor proficiency and academic achievement in 7 years-old children. A mediating model in which the relation between motor proficiency and academic achievement is mediated by cognitive ability was tested. Participants included 152 children from the longitudinal study Jeunes enfants et leurs milieux de vie (Young Children and their Environments). Motor proficiency was evaluated with the Bruininks-Oseretsky Test of Motor Proficiency (BOT2), cognitive ability with the Wechsler Intelligence Scale for Children-Fourth Edition (WISC-IV) and academic achievement with the Wechsler Individual Achievement Test II (WIAT II)...
December 6, 2017: Human Movement Science
https://www.readbyqxmd.com/read/29222073/the-functional-impairments-in-a-patient-with-morvan-s-syndrome-a-case-report
#13
Stephanie Tow, Desi Carozza, Kim Barker
A 48 year-old man with lung squamous cell carcinoma was admitted to acute care with cognitive impairment after recent chemotherapy. He developed myoclonus, ataxia, agitation, and visual hallucinations. Morvan's Syndrome, a rare voltage-gated potassium channel antibody disorder characterized by neuromyotonia with central nervous system dysfunction, was eventually diagnosed. He received plasmapheresis and was admitted to inpatient rehabilitation, where he safely participated in therapies. By focusing on neuromuscular rehabilitation, balance training, fine motor skills, and cognitive retraining emphasizing skills relevant to the patient's premorbid cognitive activities, the patient demonstrated significant functional improvement, decreasing the burden of care of his caregivers...
December 5, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29221774/sleep-dependent-motor-sequence-memory-consolidation-in-individuals-with-periodic-limb-movements
#14
Valya Sergeeva, Jeremy Viczko, Laura B Ray, Adrian M Owen, Stuart M Fogel
Periodic limb movements (PLMs) during sleep increase with age and are associated with striatal neurodegeneration and dopamine deficiency. Limb movements are often associated with disruptions to non-rapid eye movement (NREM) sleep. Motor skill memory consolidation recruits the striatum, and learning-dependent striatal activation is associated with NREM sleep. Therefore, we investigated whether de novo individuals who significantly experience elevated levels of PLMs but have not been formally diagnosed with periodic limb movement disorder had learning and sleep-related memory deficits and whether these deficits were related to sleep quality and symptom severity...
December 2017: Sleep Medicine
https://www.readbyqxmd.com/read/29219877/effectiveness-of-robotic-assisted-rehabilitation-for-mobility-and-functional-ability-in-adult-stroke-patients-a-systematic-review
#15
Kenneth Lo, Matthew Stephenson, Craig Lockwood
BACKGROUND: Stroke is a leading cause of long-term disability, and rehabilitation, involving repetitive, high intensity, task-specific exercises, is the pathway to restoring motor skills. Robotic assistive devices are increasingly being used and it is hoped that with robotic devices, rehabilitation progress can be achieved for patients. OBJECTIVES: To examine the effectiveness of robotic devices in the rehabilitation of stroke patients for upper limb mobility, lower limb mobility, and activities of daily living...
December 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/29216384/evaluating-smartphone-based-virtual-reality-to-improve-chinese-schoolchildren-s-pedestrian-safety-a-nonrandomized-trial
#16
David C Schwebel, Yue Wu, Peng Li, Joan Severson, Yefei He, Henry Xiang, Guoqing Hu
Objective: This nonrandomized trial evaluated whether classroom-based training in a smartphone-based virtual reality (VR) pedestrian environment (a) teaches schoolchildren to cross streets safely, and (b) increases their self-efficacy for street-crossing. Methods: Fifty-six children, aged 8-10 years, attending primary school in Changsha, China participated. Baseline pedestrian safety assessment occurred in the VR environment and through unobtrusive observation of a subsample crossing a street for 11 days outside school...
December 5, 2017: Journal of Pediatric Psychology
https://www.readbyqxmd.com/read/29214414/understanding-the-need-for-assistance-with-survey-completion-in-people-with-huntington-disease
#17
Elizabeth A Hahn, Nancy R Downing, Julie C Stout, Jane S Paulsen, Becky Ready, Siera Goodnight, Jin-Shei Lai, Jennifer A Miner, Noelle E Carlozzi
PURPOSE: In Huntington disease (HD), motor, cognitive, and psychiatric changes can have a detrimental impact on health-related quality of life (HRQOL). The purpose of this paper is to describe the extent and type of assistance needed to complete online HRQOL surveys, and the impact of assistance on HRQOL scores. METHODS: A patient-reported outcome measurement system was developed for HD-specific HRQOL. Individuals across the prodromal and diagnosed disease severity spectrum (n = 532) completed surveys by computer, and reported the amount and type of assistance they received...
December 6, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/29213525/motor-learning-characterization-in-people-with-autism-spectrum-disorder-a-systematic-review
#18
Íbis Ariana Peña de Moraes, Thais Massetti, Tânia Brusque Crocetta, Talita Dias da Silva, Lilian Del Ciello de Menezes, Carlos Bandeira de Mello Monteiro, Fernando Henrique Magalhães
Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder primarily characterized by deficits in social interaction, communication and implicit skill learning. OBJECTIVE: To analyse the results of research on "motor learning" and the means used for measuring "autistic disorder". METHODS: A systematic literature search was done using Medline/PubMed, Web of Science, BVS (virtual health library), and PsycINFO. We included articles that contained the keywords "autism" and "motor learning"...
July 2017: Dementia & Neuropsychologia
https://www.readbyqxmd.com/read/29213235/changes-in-predictive-task-switching-with-age-and-with-cognitive-load
#19
Shelly Levy-Tzedek
Predictive control of movement is more efficient than feedback-based control, and is an important skill in everyday life. We tested whether the ability to predictively control movements of the upper arm is affected by age and by cognitive load. A total of 63 participants were tested in two experiments. In both experiments participants were seated, and controlled a cursor on a computer screen by flexing and extending their dominant arm. In Experiment 1, 20 young adults and 20 older adults were asked to continuously change the frequency of their horizontal arm movements, with the goal of inducing an abrupt switch between discrete movements (at low frequencies) and rhythmic movements (at high frequencies)...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29213051/a-robot-aided-visuo-motor-training-that-improves-proprioception-and-spatial-accuracy-of-untrained-movement
#20
Naveen Elangovan, Leonardo Cappello, Lorenzo Masia, Joshua Aman, Jürgen Konczak
Proprioceptive function can become enhanced during motor learning. Yet, we have incomplete knowledge to what extent proprioceptive function is trainable and how a training that enhances proprioception may influence performance in untrained motor skills. To address this knowledge gap, healthy young adults (N = 14) trained in a visuomotor task that required learners to make increasingly accurate wrist movements. Using a robotic exoskeleton coupled with a virtual visual environment, participants tilted a virtual table through continuous wrist flexion/extension movements with the goal to position a rolling ball on table into a target...
December 6, 2017: Scientific Reports
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