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https://www.readbyqxmd.com/read/27920096/structural-pathways-supporting-swift-acquisition-of-new-visuomotor-skills
#1
Ari E Kahn, Marcelo G Mattar, Jean M Vettel, Nicholas F Wymbs, Scott T Grafton, Danielle S Bassett
Human skill learning requires fine-scale coordination of distributed networks of brain regions linked by white matter tracts to allow for effective information transmission. Yet how individual differences in these anatomical pathways may impact individual differences in learning remains far from understood. Here, we test the hypothesis that individual differences in structural organization of networks supporting task performance predict individual differences in the rate at which humans learn a visuomotor skill...
December 5, 2016: Cerebral Cortex
https://www.readbyqxmd.com/read/27916362/effectiveness-of-a-mental-skills-curriculum-to-reduce-novices-stress
#2
Nicholas E Anton, Lisa D Howley, Manuel Pimentel, Cameron K Davis, Charles Brown, Dimitrios Stefanidis
BACKGROUND: Stress has been shown to negatively impact surgical performance, and surgical novices are particularly susceptible to its effects. Mental skills are psychological strategies designed to enhance performance and reduce the impact of stress to consistently facilitate the ideal mental conditions that enable performers to perform their best. Mental skills have been used routinely in other high-stress domains (e.g., with Navy SEALs, military pilots, elite athletes, and so forth) to facilitate optimal performance in challenging situations...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27909747/transcranial-direct-current-stimulation-tdcs-to-the-supplementary-motor-area-sma-influences-performance-on-motor-tasks
#3
K E Hupfeld, C J Ketcham, H D Schneider
The supplementary motor area (SMA) is believed to be highly involved in the planning and execution of both simple and complex motor tasks. This study aimed to examine the role of the SMA in planning the movements required to complete reaction time, balance, and pegboard tasks using anodal transcranial direct current stimulation (tDCS), which passes a weak electrical current between two electrodes, in order to modulate neuronal activity. Twenty healthy adults were counterbalanced to receive either tDCS (experimental condition) or no tDCS (control condition) for 3 days...
December 1, 2016: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/27900816/sensorimotor-and-visual-perceptual-functioning-in-school-aged-children-with-williams-syndrome
#4
Y-P Wuang, H-Y Tsai
BACKGROUND: The purpose of the study was to describe sensorimotor profile and visual perceptual performance in school-aged (6-12 years) children with Williams syndrome (WS). The impacts of sensorimotor and visual perception on participation in WS were examined as well to guide research and evidence-based practices. METHODS: A total of 38 children with WS aged 6 to 12 years were evaluated with measures of motor performance (Bruininks-Oseretsky of Motor Proficiency-Second Edition), sensory processing (Sensory Profile), visual perceptual abilities (Test of Visual Perception Skills-Third Edition) and activity participation (Vineland Adaptive Behavior Scale, School Function Assessment)...
November 30, 2016: Journal of Intellectual Disability Research: JIDR
https://www.readbyqxmd.com/read/27889381/do-developmental-milestones-at-4-8-12-and-24-months-predict-iq-at-5-6-years-old-results-of-the-eden-mother-child-cohort
#5
Hugo Peyre, Marie-Laure Charkaluk, Anne Forhan, Barbara Heude, Franck Ramus
RATIONALE: The present study aims: (i) to determine how well developmental milestones at 4, 8, 12 and 24 months may predict IQ at 5-6 years old, (ii) to identify cognitive domains during the first two years that best predict later IQ and (iii) to determine whether children with IQ in the normal range at 5-6 years old may differ from disabled (IQ < 70) and gifted children (IQ > 130) with regard to their early cognitive development. METHOD: The main developmental milestones were collected through self-administered questionnaires rated by parents at 4, 8, 12 and 24 months and through parental questionnaires administered by a trained interviewer and questionnaires completed following a medical examination at 12 months...
November 15, 2016: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/27886250/shared-somatosensory-and-motor-functions-in-musicians
#6
Moe Hosoda, Shinichi Furuya
Skilled individuals are characterized by fine-tuned perceptual and motor functions. Here, we tested the idea that the sensory and motor functions of highly-trained individuals are coupled. We assessed the relationships among multifaceted somatosensory and motor functions of expert pianists. The results demonstrated a positive covariation between the acuity of weight discrimination and the precision of force control during piano keystrokes among the pianists but not among the non-musicians. However, neither the age of starting musical training nor the total amount of life-long piano practice was correlated with these sensory-motor functions in the pianists...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27875541/new-perspective-on-impact-of-folic-acid-supplementation-during-pregnancy-on-neurodevelopment-autism-in-the-offspring-children-a-systematic-review
#7
Yunfei Gao, Chao Sheng, Ri-Hua Xie, Wen Sun, Elizabeth Asztalos, Diane Moddemann, Lonnie Zwaigenbaum, Mark Walker, Shi Wu Wen
It has been conclusively established that folic acid supplementation prior to and during early pregnancy (up to 12 weeks of gestation) can prevent neural tube defects (NTDs). We hypothesized that folate effects may extend from neuro-structural defects to alterations in neuro-behavioural and emotional skills including autism spectrum disorders (ASDs) and other developmental disorders. The objective of this review was to comprehensively evaluate evidence on the impact of folic acid on neurodevelopment other than NTDs...
2016: PloS One
https://www.readbyqxmd.com/read/27872369/the-impact-of-cerebellar-transcranial-direct-current-stimulation-tdcs-on-learning-fine-motor-sequences
#8
Renee E Shimizu, Allan D Wu, Jasmine K Samra, Barbara J Knowlton
The cerebellum has been shown to be important for skill learning, including the learning of motor sequences. We investigated whether cerebellar transcranial direct current stimulation (tDCS) would enhance learning of fine motor sequences. Because the ability to generalize or transfer to novel task variations or circumstances is a crucial goal of real world training, we also examined the effect of tDCS on performance of novel sequences after training. In Study 1, participants received either anodal, cathodal or sham stimulation while simultaneously practising three eight-element key press sequences in a non-repeating, interleaved order...
January 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/27847348/characterization-of-infant-mu-rhythm-immediately-before-crawling-a-high-resolution-eeg-study
#9
Ran Xiao, Xiao Qi, Alejandro Patino, Andrew H Fagg, Thubi H A Kolobe, David P Miller, Lei Ding
Crawling is an important milestone in infant motor development. However, infants with developmental motor disorders can exhibit delays, or even miss, in the acquisition of crawling skill. And little information is available from the neurodevelopmental domain about the changes in brain function with intervention. The mu rhythm can potentially play a substantial role in understanding human motor development at early ages in infants, as it has in adults. Studies about the mu rhythm in infants were in coarse temporal resolution with longitudinal samples taken months or years apart...
November 12, 2016: NeuroImage
https://www.readbyqxmd.com/read/27832925/ecological-validity-of-the-german-bruininks-oseretsky-test-of-motor-proficiency-2nd-edition
#10
Sabine Vinçon, Dido Green, Rainer Blank, Ekkehart Jenetzky
The diagnosis of Developmental Coordination Disorder (DCD) is based on poor motor coordination in the absence of other neurological disorders. In order to identify the presence of movement difficulties, a standardised motor assessment is recommended to determine the extent of movement problems which may contribute to deficits in daily task performance. A German version of the Bruininks-Oseretsky Test of Motor Proficiency, Second Edition (German BOT-2) was recently published. This study aimed to determine the ecological validity of the German BOT-2 by considering the relationship between assessment of fundamental motor skills with the BOT-2 and performance of everyday motor activities as evaluated by parents...
November 7, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27832354/neuropsychological-improvement-after-posterior-fossa-arachnoid-cyst-drainage
#11
M L Cuny, M Pallone, H Piana, N Boddaert, C Sainte-Rose, L Vaivre-Douret, P Piolino, S Puget
PURPOSE: Posterior fossa arachnoid cysts (PFAC) are mostly considered as benign lesions of the cerebellum. Although many studies have shown the major role of the cerebellum in modulating movement, language, cognition, and social interaction, there are few studies on the cognitive impact and surgical decompression of PFAC. METHODS: We present the cases of two brothers successively diagnosed with PFAC and neuropsychological delay. After multidisciplinary discussion with the boys' parents, it was decided to drain these lesions...
November 10, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27796476/cognitive-and-fine-motor-deficits-in-a-pediatric-sickle-cell-disease-cohort-of-mixed-ethnic-origin
#12
Luise Burkhardt, Stephan Lobitz, Elisabeth Koustenis, Stefan Mark Rueckriegel, Pablo Hernáiz Driever
Cerebrovascular disease is an important feature of pediatric sickle cell disease (SCD) and may lead to cognitive and motor impairment. Our cross-sectional study examined the incidence and severity of these impairments in a pediatric cohort without clinical cerebrovascular events from Berlin of mixed ethnic origin. Thirty-two SCD patients (mean age 11.14 years, range 7.0-17.25 years; males 14) were evaluated for full-scale intelligence (IQ) (German version WISC-III), fine motor function (digital writing tablet), and executive function (planning, attention, working memory, and visual-spatial abilities) with the Amsterdam Neuropsychological Tasks (ANT) program and the Tower of London (ToL)...
October 29, 2016: Annals of Hematology
https://www.readbyqxmd.com/read/27793778/aav-mediated-gene-delivery-attenuates-neuroinflammation-in-feline-sandhoff-disease
#13
Allison M Bradbury, Tiffany A Peterson, Amanda L Gross, Stephen Z Wells, Victoria J McCurdy, Karen G Wolfe, John C Dennis, Brandon L Brunson, Heather Gray-Edwards, Ashley N Randle, Aime K Johnson, Edward E Morrison, Nancy R Cox, Henry J Baker, Miguel Sena-Esteves, Douglas R Martin
Sandhoff disease (SD) is a lysosomal storage disorder characterized by the absence of hydrolytic enzyme β-N-acetylhexosaminidase (Hex), which results in storage of GM2 ganglioside in neurons and unremitting neurodegeneration. Neuron loss initially affects fine motor skills, but rapidly progresses to loss of all body faculties, a vegetative state, and death by five years of age in humans. A well-established feline model of SD allows characterization of the disease in a large animal model and provides a means to test the safety and efficacy of therapeutic interventions before initiating clinical trials...
October 26, 2016: Neuroscience
https://www.readbyqxmd.com/read/27789726/monocyte-activation-is-associated-with-worse-cognitive-performance-in-virologically-suppressed-hiv-infected-women
#14
Brandon M Imp, Leah H Rubin, Phyllis C Tien, Michael W Plankey, Elizabeth T Golub, Audrey L French, Victor G Valcour
BACKGROUND:  Cognitive impairment persists despite suppression of plasma HIV RNA. Monocyte-related immune activation is a likely mechanism. We examined immune activation and cognition in a cohort of HIV-infected and -uninfected women from the Women's Interagency HIV Study (WIHS). METHODS:  Blood levels of activation markers, soluble CD163 (sCD163), soluble CD14 (sCD14), CRP, IL-6, and a gut microbial translocation marker (intestinal fatty acid binding protein (I-FABP)) were measured in 253 women (73% HIV-infected)...
October 26, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27785593/communication-deficits-and-the-motor-system-exploring-patterns-of-associations-in-autism-spectrum-disorder-asd
#15
M Mody, A M Shui, L A Nowinski, S B Golas, C Ferrone, J A O'Rourke, C J McDougle
Many children with autism spectrum disorder (ASD) have notable difficulties in motor, speech and language domains. The connection between motor skills (oral-motor, manual-motor) and speech and language deficits reported in other developmental disorders raises important questions about a potential relationship between motor skills and speech-language deficits in ASD. To this end, we examined data from children with ASD (n = 1781), 2-17 years of age, enrolled in the Autism Speaks-Autism Treatment Network (AS-ATN) registry who completed a multidisciplinary evaluation that included diagnostic, physical, cognitive and behavioral assessments as part of a routine standard of care protocol...
October 26, 2016: Journal of Autism and Developmental Disorders
https://www.readbyqxmd.com/read/27775169/an-interactive-system-for-fine-motor-rehabilitation
#16
Ruben Posada-Gómez, Roberto A Montaño-Murillo, Albino Martínez-Sibaja, Giner Alor-Hernández, Alberto A Aguilar-Lasserre, Miriam C Reyes-Fernández
PURPOSE: One of the most important aspects in neuromotor rehabilitation is the need of feedback for patients. The rehabilitation system's efficiency relies on the therapist's judgment, who tells the patient whether he/she is performing the exercises correctly. This process may be quite subjective, because it depends on the therapist's personal opinion. On the other hand, recent studies have shown that vibrotactile biofeedback can improve the effectiveness of interaction as it is a very helpful tool in the physiological process of neuromotor rehabilitation...
October 24, 2016: Rehabilitation Nursing: the Official Journal of the Association of Rehabilitation Nurses
https://www.readbyqxmd.com/read/27771004/prenatal-exposure-to-low-level-methylmercury-alters-the-child-s-fine-motor-skills-at-the-age-of-18-months
#17
Igor Prpić, Ana Milardović, Inge Vlašić-Cicvarić, Zdravko Špiric, Jelena Radić Nišević, Petar Vukelić, Janja Snoj Tratnik, Darja Mazej, Milena Horvat
OBJECTIVES: To compare motor, cognitive and language characteristics in children aged 18 months who were prenatally exposed to low-level methyl-mercury (MeHg), and to analyze the eventual differences in these characteristics in relation to cord blood THg concentration. PATIENTS AND METHODS: The total number of 205 child-mother pairs was included in the study, and total cord blood mercury was measured in 198 of them. Out of the 198 already measured samples, 47 of them have also been tested for methyl-mercury in cord blood...
January 2017: Environmental Research
https://www.readbyqxmd.com/read/27767944/feasibility-of-using-an-arm-weight-supported-training-system-to-improve-hand-function-skills-in-children-with-hemiplegia
#18
Swetha Krishnaswamy, Daniel J Coletti, Hilary Berlin, Kathleen Friel
OBJECTIVE: This investigation was a pilot feasibility trial evaluating the use of an arm-weight-supported training device to improve upper-extremity function in children with hemiplegia. METHOD: A single-group within-subject design was used. Participants were 6 children ages 7-17 yr with upper-extremity weakness secondary to hemiplegia. The intervention consisted of 15-18 treatment sessions using an arm-weight-supported training device with the affected upper extremity...
November 2016: American Journal of Occupational Therapy: Official Publication of the American Occupational Therapy Association
https://www.readbyqxmd.com/read/27759046/independent-long-fingers-are-not-essential-for-a-grasping-hand
#19
Federico Montagnani, Marco Controzzi, Christian Cipriani
The human hand is a complex integrated system with motor and sensory components that provides individuals with high functionality and elegant behaviour. In direct connection with the brain, the hand is capable of performing countless actions ranging from fine digit manipulation to the handling of heavy objects. However the question of which movements mostly contribute to the manipulation skills of the hand, and thus should be included in prosthetic hands, is yet to be answered. Building from our previous work, and assuming that a hand with independent long fingers allowed performance comparable to a hand with coupled fingers, here we explored the actual contribution of independent fingers while performing activities of daily living using custom built orthoses...
October 19, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27748613/different-key-strokes-for-different-folks-how-standard-and-nonstandard-typists-balance-fitts-law-and-hick-s-law
#20
Gordon D Logan, Jana E Ulrich, Dakota R B Lindsey
Fine motor skills like typing involve a mapping problem that trades Fitts' law against Hick's law. Eight fingers have to be mapped onto 26 keys. Movement time increases with distance, so Fitts' law is optimized by recruiting more fingers. Choice difficulty increases with the number of alternatives, so Hick's law is optimized by recruiting fewer fingers. The effect of the number of alternatives decreases with consistent practice, so skilled typists achieve a balance between Fitts' law and Hick's law through learning...
December 2016: Journal of Experimental Psychology. Human Perception and Performance
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