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https://www.readbyqxmd.com/read/28196647/the-dorsal-visual-stream-revisited-stable-circuits-or-dynamic-pathways
#1
REVIEW
Claudio Galletti, Patrizia Fattori
In both macaque and human brain, information regarding visual motion flows from the extrastriate area V6 along two different paths: a dorsolateral one towards areas MT/V5, MST, V3A, and a dorsomedial one towards the visuomotor areas of the superior parietal lobule (V6A, MIP, VIP). The dorsolateral visual stream is involved in many aspects of visual motion analysis, including the recognition of object motion and self motion. The dorsomedial stream uses visual motion information to continuously monitor the spatial location of objects while we are looking and/or moving around, to allow skilled reaching for and grasping of the objects in structured, dynamically changing environments...
January 23, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28192818/-benefits-of-measures-to-promote-development-in-language-mathematics-and-singing-in-kindergardeners-analysis-of-data-collected-at-school-entrance-examination-in-the-county-of-biberach
#2
Ulrike Hart, Manfred Wildner, Daniela Krämer, Alexander Crispin
To evaluate the benefits of implementing measures to promote skills in the areas of language, mathematics and singing in kindergardeners by statistical analysis of data collected during the school entrance examination (ESU) of 4-5-year-old children from the county of Biberach. Study 1 employs multivariate regression analysis to analyse - in chronological order - the ESU data on 4 cohorts (2011-2014; n=7 148) of children of the Biberach county. Study 2 qualitatively compares identical data representative of the entire state of Baden-Württemberg (N=3×80 000) with the Biberach results...
February 13, 2017: Das Gesundheitswesen
https://www.readbyqxmd.com/read/28189001/functional-outcome-at-school-age-of-children-born-with-gastroschisis
#3
Chiara C M M Lap, Sandra W Bolhuis, Koenraad N J A Van Braeckel, Sijmen A Reijneveld, Gwendolyn T R Manten, Arend F Bos, Jan B F Hulscher
OBJECTIVE: We aimed to determine motor, cognitive and behavioural outcomes of school aged children born with gastroschisis compared to matched controls. STUDY DESIGN: We compared outcomes of 16 children born with gastroschisis treated at the University Medical Center Groningen, the Netherlands, between 1999 and 2006 with 32 controls matched for gender, gestational age, birth weight, and corrected for small for gestational age (SGA) and parental socioeconomic status (SES)...
February 8, 2017: Early Human Development
https://www.readbyqxmd.com/read/28182742/interactive-effects-of-visuomotor-perturbation-and-an-afternoon-nap-on-performance-and-the-flow-experience
#4
Kosuke Kaida, Yoshihiro Itaguchi, Sunao Iwaki
The present study was designed (1) to clarify the relationship between the flow experience and improvements in visuomotor skills, (2) to examine the effects of rotating the axis of a computer mouse on visuomotor skills, and (3) to investigate the effects of sleep for improving visuomotor skills. Participants (N = 18) responded to Perturbation and nap (PER+Nap), No-perturbation and nap (NoPER+Nap) and Perturbation and rest (PER+Rest) conditions. In the PER+Nap condition, participants conducted a visuomotor tracking task using a computer mouse, which was accompanied by perturbation caused by rotating the axis of their mouse...
2017: PloS One
https://www.readbyqxmd.com/read/28181219/developmental-relations-among-motor-and-cognitive-processes-and-mathematics-skills
#5
Helyn Kim, Chelsea A K Duran, Claire E Cameron, David Grissmer
This study explored transactional associations among visuomotor integration, attention, fine motor coordination, and mathematics skills in a diverse sample of one hundred thirty-five 5-year-olds (kindergarteners) and one hundred nineteen 6-year-olds (first graders) in the United States who were followed over the course of 2 school years. Associations were dynamic, with more reciprocal transactions occurring in kindergarten than in the later grades. Specifically, visuomotor integration and mathematics exhibited ongoing reciprocity in kindergarten and first grade, attention contributed to mathematics in kindergarten and first grade, mathematics contributed to attention across the kindergarten year only, and fine motor coordination contributed to mathematics indirectly, through visuomotor integration, across kindergarten and first grade...
February 9, 2017: Child Development
https://www.readbyqxmd.com/read/28153687/error-related-negativity-in-the-skilled-brain-of-pianists-reveals-motor-simulation
#6
Alice Mado Proverbio, Matteo Cozzi, Andrea Orlandi, Manuel Carminati
Evidences have been provided of a crucial role of multimodal audio-visuomotor processing in subserving the musical ability. In this paper we investigated whether musical audiovisual stimulation might trigger the activation of motor information in the brain of professional pianists, due to the presence of permanent gestures/sound associations. At this aim EEG was recorded in 24 pianists and naive participants engaged in the detection of rare targets while watching hundreds of video clips showing a pair of hands in the act of playing, along with a compatible or incompatible piano soundtrack...
January 30, 2017: Neuroscience
https://www.readbyqxmd.com/read/28072633/visual-motion-processing-subserves-faster-visuomotor-reaction-in-badminton-players
#7
Thorben Hülsdünker, Heiko K Strüder, Andreas Mierau
INTRODUCTION: Athletes participating in ball or racquet sports have to respond to visual stimuli under critical time pressure. Previous studies used visual contrast stimuli to determine visual perception and visuomotor reaction in athletes and non-athletes however, especially ball and racquet sports are characterized by motion rather than contrast visual cues. Since visual contrast and motion signals are processed in different cortical regions, this study aimed to determine differences in perception and processing of visual motion between athletes and non-athletes...
January 9, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27920096/structural-pathways-supporting-swift-acquisition-of-new-visuomotor-skills
#8
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/27916670/pseudoneglect-in-line-bisection-judgement-is-associated-with-a-modulation-of-right-hemispheric-spatial-attention-dominance-in-right-handers
#9
Laure Zago, Laurent Petit, Gael Jobard, Julien Hay, Bernard Mazoyer, Nathalie Tzourio-Mazoyer, Hans-Otto Karnath, Emmanuel Mellet
The objective of this study was to validate a line bisection judgement (LBJ) task for use in investigating the lateralized cerebral bases of spatial attention in a sample of 51 right-handed healthy participants. Using functional magnetic resonance imaging (fMRI), the participants performed a LBJ task that was compared to a visuomotor control task during which the participants made similar saccadic and motoric responses. Cerebral lateralization was determined using a voxel-based functional asymmetry analysis and a hemispheric functional lateralization index (HFLI) computed from fMRI contrast images...
January 8, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/27897671/high-intensity-interval-exercise-promotes-motor-cortex-disinhibition-and-early-motor-skill-consolidation
#10
Ellen L Stavrinos, James P Coxon
Gamma-aminobutyric acid (GABA) inhibition shapes motor cortex output, gates synaptic plasticity in the form of long-term potentiation, and plays an important role in motor learning. Remarkably, recent studies have shown that acute cardiovascular exercise can improve motor memory, but the cortical mechanisms are not completely understood. We investigated whether an acute bout of lower-limb high-intensity interval (HIT) exercise could promote motor memory formation in humans through changes in cortical inhibition within the hand region of the primary motor cortex...
November 29, 2016: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/27893270/a-link-between-attentional-function-effective-eye-movements-and-driving-ability
#11
Andrew K Mackenzie, Julie M Harris
The misallocation of driver visual attention has been suggested as a major contributing factor to vehicle accidents. One possible reason is that the relatively high cognitive demands of driving limit the ability to efficiently allocate gaze. We present an experiment that explores the relationship between attentional function and visual performance when driving. Drivers performed 2 variations of a multiple-object tracking task targeting aspects of cognition including sustained attention, dual-tasking, covert attention, and visuomotor skill...
February 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/27847484/an-integrative-framework-of-stress-attention-and-visuomotor-performance
#12
REVIEW
Samuel J Vine, Lee J Moore, Mark R Wilson
The aim of this article is to present an integrative conceptual framework that depicts the effect of acute stress on the performance of visually guided motor skills. We draw upon seminal theories highlighting the importance of subjective interpretations of stress on subsequent performance and outline how models of disrupted attentional control might explain this effect through impairments in visuomotor control. We first synthesize and critically discuss empirical support for theories examining these relationships in isolation...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27832611/individual-differences-in-implicit-motor-learning-task-specificity-in-sensorimotor-adaptation-and-sequence-learning
#13
Alit Stark-Inbar, Meher Raza, Jordan A Taylor, Richard B Ivry
: In standard taxonomies, motor skills are typically treated as representative of implicit or procedural memory. We examined two emblematic tasks of implicit motor learning, sensorimotor adaptation and sequence learning, asking whether individual differences in learning are correlated between these tasks, as well as how individual differences within each task are related to different performance variables. As a prerequisite, it was essential to establish the reliability of learning measures for each task...
January 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27816030/surgical-management-of-arrested-hydrocephalus-case-report-literature-review-and-18-month-follow-up
#14
Jennifer Hong, Benjamin G Barrena, S Scott Lollis, David F Bauer
OBJECTIVE: Arrested hydrocephalus is stable ventriculomegaly without evidence of neurologic deterioration or symptoms. Management of arrested hydrocephalus in asymptomatic adults is controversial, with little clinical data. This case highlights the potential for decompensation in adults with arrested hydrocephalus and reviews the literature regarding pathophysiology and management of this clinical entity. PATIENTS AND METHODS: A 39 year-old gentleman with arrested hydrocephalus incidentally found during work-up for new-onset seizure and managed conservatively for ten years presented with increasing headache, memory loss, gait instability and urinary and fecal incontinence...
December 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27790760/acute-exercise-and-motor-memory-consolidation-does-exercise-type-play-a-role
#15
R Thomas, M Flindtgaard, K Skriver, S S Geertsen, L Christiansen, L Korsgaard Johnsen, D V P Busk, E Bojsen-Møller, M J Madsen, C Ritz, M Roig, J Lundbye-Jensen
A single bout of high-intensity exercise can augment off-line gains in skills acquired during motor practice. It is currently unknown if the type of physical exercise influences the effect on motor skill consolidation. This study investigated the effect of three types of high-intensity exercise following visuomotor skill acquisition on the retention of motor memory in 40 young (25.3 ±3.6 years), able-bodied male participants randomly assigned to one of four groups either performing strength training (STR), circuit training (CT), indoor hockey (HOC) or rest (CON)...
October 27, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27733596/a-novel-computational-model-to-probe-visual-search-deficits-during-motor-performance
#16
Tarkeshwar Singh, Julius Fridriksson, Christopher M Perry, Sarah C Tryon, Angela Ross, Stacy Fritz, Troy M Herter
: Successful execution of many motor skills relies on well-organized visual search (voluntary eye movements that actively scan the environment for task-relevant information). Although impairments of visual search that result from brain injuries are linked to diminished motor performance, the neural processes that guide visual search within this context remain largely unknown. The first objective of this study was to examine how visual search in healthy adults and stroke survivors is used to guide hand movements during the Trail Making Test (TMT), a neuropsychological task that is a strong predictor of visuomotor and cognitive deficits...
January 1, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/27699480/regional-cerebellar-volumetric-correlates-of-manual-motor-and-cognitive-function
#17
Vincent Koppelmans, Yoo Young Hoogendam, Sarah Hirsiger, Susan Mérillat, Lutz Jäncke, Rachael D Seidler
Cerebellar volume declines with aging. Few studies have investigated age differences in regional cerebellar volume (RCV) and their association with motor and cognitive function. In 213 healthy older adults, we investigated the association of age with motor skills, cognition and RCV. Subsequently, we studied the association of RCV with motor skills and cognition. RCVs were derived from T1-weighted MRI scans using the automated SUIT segmentation method and clustered using principal component analysis (PCA). Motor skill (manual dexterity, tapping speed, bimanual visuomotor coordination, grip force) and cognition (mental rotation, verbal memory, inhibition, mental flexibility) were assessed...
October 3, 2016: Brain Structure & Function
https://www.readbyqxmd.com/read/27615432/memory-consolidation-in-children-with-specific-language-impairment-delayed-gains-and-susceptibility-to-interference-in-implicit-sequence-learning
#18
Lise Desmottes, Christelle Maillart, Thierry Meulemans
In this study, the time course of the procedural learning of a visuomotor sequence skill was followed over a 24-hour and a 1-week time period in children with and without specific language impairment (SLI). Two aspects of memory consolidation in implicit sequence learning were examined: the evolution of post-training gains in sequence knowledge (Experiment 1) and the susceptibility to interference (Experiment 2). In the first experiment, 18 children with SLI and 17 control children matched for sex, age, and nonverbal intelligence completed a serial reaction-time (SRT) task and were tested 24 hours and 1 week after practicing...
September 10, 2016: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/27560512/motor-skills-and-exercise-capacity-are-associated-with-objective-measures-of-cognitive-functions-and-academic-performance-in-preadolescent-children
#19
Svend Sparre Geertsen, Richard Thomas, Malte Nejst Larsen, Ida Marie Dahn, Josefine Needham Andersen, Matilde Krause-Jensen, Vibeke Korup, Claus Malta Nielsen, Jacob Wienecke, Christian Ritz, Peter Krustrup, Jesper Lundbye-Jensen
OBJECTIVE: To investigate associations between motor skills, exercise capacity and cognitive functions, and evaluate how they correlate to academic performance in mathematics and reading comprehension using standardised, objective tests. METHODS: This cross-sectional study included 423 Danish children (age: 9.29±0.35 years, 209 girls). Fine and gross motor skills were evaluated in a visuomotor accuracy-tracking task, and a whole-body coordination task, respectively...
2016: PloS One
https://www.readbyqxmd.com/read/27513713/minor-neurological-dysfunction-in-five-year-old-very-preterm-children-is-associated-with-lower-processing-speed
#20
Tinka Kurpershoek, Eva S Potharst-Sirag, Cornelieke S H Aarnoudse-Moens, Aleid G van Wassenaer-Leemhuis
BACKGROUND: Minor neurological dysfunction (MND) is present in one quarter to one third of children born very preterm (VP). The more severe form, complex (c)-MND has been associated with learning disabilities, behavioural and motor problems. OBJECTIVE: To study the association between c-MND and neurocognitive and motor disabilities at age five in VP children without CP. METHODS: Ninety-four children born with gestational age<30weeks and/or a birth weight<1000g were assessed at five years corrected age...
December 2016: Early Human Development
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