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Motor learning infant

Annika C Linke, Conor Wild, Leire Zubiaurre-Elorza, Charlotte Herzmann, Hester Duffy, Victor K Han, David S C Lee, Rhodri Cusack
Objective: Functional connectivity magnetic resonance imaging (fcMRI) of neonates with perinatal brain injury could improve prediction of motor impairment before symptoms manifest, and establish how early brain organization relates to subsequent development. This cohort study is the first to describe and quantitatively assess functional brain networks and their relation to later motor skills in neonates with a diverse range of perinatal brain injuries. Methods: Infants ( n  = 65, included in final analyses: n  = 53) were recruited from the neonatal intensive care unit (NICU) and were stratified based on their age at birth (premature vs...
2018: NeuroImage: Clinical
Molly Potter, Ted Rosenkrantz, R Holly Fitch
The current study investigated behavioral and post mortem neuroanatomical outcomes in Wistar rats with a neonatal hypoxic-ischemic (HI) brain injury induced on postnatal day 6 (P6; Rice-Vannucci HI method; Rice et al., 1981). This preparation models brain injury seen in premature infants (gestational age (GA) 32-35 weeks) based on shared neurodevelopmental markers at time of insult, coupled with similar neuropathologic sequelae (Rice et al., 1981; Workman et al., 2013). Clinically, HI insult during this window is associated with poor outcomes that include attention deficit hyperactivity disorder (ADHD), motor coordination deficits, spatial memory deficits, and language/learning disabilities...
February 21, 2018: International Journal of Developmental Neuroscience
David J Lewkowicz, Mark A Schmuckler, Diane M J Mangalindan
Recursive, hierarchically organized serial patterns provide the underlying structure in many cognitive and motor domains including speech, language, music, social interaction, and motor action. We investigated whether learning of hierarchical patterns emerges in infancy by habituating 204 infants to different hierarchical serial patterns and then testing for discrimination and generalization of such patterns. Results indicated that 8- to 10-month-old and 12- to 14-month-old infants exhibited sensitivity to the difference between hierarchical and non-hierarchical structure but that 4- to 6-month-old infants did not...
February 19, 2018: Developmental Psychobiology
Sarah E Berger, Regina T Harbourne, Melissa N Horger
This chapter discusses what cognition-action trade-offs in infancy reveal about the organization and developmental trajectory of attention. We focus on internal attention because this aspect is most relevant to the immediate concerns of infancy, such as fluctuating levels of expertise, balancing multiple taxing skills simultaneously, learning how to control attention under variable conditions, and coordinating distinct psychological domains. Cognition-action trade-offs observed across the life span include perseveration during skill emergence, errors and inefficient strategies during decision making, and the allocation of resources when attention is taxed...
2018: Advances in Child Development and Behavior
Breann T Colter, Helen Frances Garber, Sheila M Fleming, Jocelyn Phillips Fowler, Gregory D Harding, Molly Kromme Hooven, Amy Ashworth Howes, Smitha Krishnan Infante, Anna L Lang, Melinda Curran MacDougall, Melinda Stegman, Kelsey Rae Taylor, Christine Perdan Curran
Polychlorinated biphenyls (PCBs) are persistent organic pollutants known to cause adverse health effects and linked to neurological deficits in both human and animal studies. Children born to exposed mothers are at highest risk of learning and memory and motor deficits. We developed a mouse model that mimics human variation in the aryl hydrocarbon receptor and cytochrome P450 1A2 (CYP1A2) to determine if genetic variation increases susceptibility to developmental PCB exposure. In our previous studies, we found that high-affinity AhrbCyp1a2(-/-) and poor-affinity AhrdCyp1a2(-/-) knockout mice were most susceptible to learning and memory deficits following developmental PCB exposure compared with AhrbCyp1a2(+/+) wild type mice (C57BL/6J strain)...
January 30, 2018: Neurotoxicology
Prahbhjot Malhi, Jagadeesh Menon, Bhavneet Bharti, Manjit Sidhu
OBJECTIVE: To examine the impact of quality of early stimulation on cognitive functioning of toddlers living in a developing country. METHODS: The developmental functioning of 150 toddlers in the age range of 12-30 mo (53% boys; Mean = 1.76 y, SD = 0.48) was assessed by the mental developmental index of the Developmental Assessment Scale for Indian Infants (DASII). The StimQ questionnaire- toddler version was used to measure cognitive stimulation at home...
February 1, 2018: Indian Journal of Pediatrics
Mukta Vaidya, Karthikeyan Balasubramanian, Joshua Southerland, Islam Badreldin, Ahmed Eleryan, Kelsey Shattuck, Suchin Gururangan, Marc W Slutzky, Leslie C Osborne, Andrew H Fagg, Karim G Oweiss, Nicholas G Hatsopoulos
The development of coordinated reach to grasp has been well-studied in infants and children (Kuhtz-Buschbeck, Stolze, Jöhnk, Boczek-Funcke, & Illert, 1998; von Hofsten, 1984a). However, the role of motor cortex during this development is unclear because it is difficult to study in humans. We took the approach using a brain-machine interface (BMI) paradigm in rhesus macaques with prior therapeutic amputations to examine the emergence of novel, coordinated reach-to-grasp. Previous research has shown that after amputation, the cortical area previously involved in the control of the lost limb undergoes reorganization (Qi, Stepniewska, & Kaas, 2000; Schieber & Deuel, 1997; Wu & Kaas, 1999), but prior BMI work has largely relied on finding neurons that already encode specific movement-related information...
December 13, 2017: Journal of Neurophysiology
Freek Stulp, Pierre-Yves Oudeyer
To harness the complexity of their high-dimensional bodies during sensorimotor development, infants are guided by patterns of freezing and freeing of degrees of freedom. For instance, when learning to reach, infants free the degrees of freedom in their arm proximodistally, that is, from joints that are closer to the body to those that are more distant. Here, we formulate and study computationally the hypothesis that such patterns can emerge spontaneously as the result of a family of stochastic optimization processes, without an innate encoding of a maturational schedule...
December 29, 2017: Developmental Science
Eszter Somogyi, Lisa Jacquey, Tobias Heed, Matej Hoffmann, Jeffrey J Lockman, Lionel Granjon, Jacqueline Fagard, J Kevin O'Regan
This study focuses on how the body schema develops during the first months of life, by investigating infants' motor responses to localized vibrotactile stimulation on their limbs. Vibrotactile stimulation was provided by small buzzers that were attached to the infants' four limbs one at a time. Four age groups were compared cross-sectionally (3-, 4-, 5-, and 6-month-olds). We show that before they actually reach for the buzzer, which, according to previous studies, occurs around 7-8 months of age, infants demonstrate emerging knowledge about their body's configuration by producing specific movement patterns associated with the stimulated body area...
December 11, 2017: British Journal of Developmental Psychology
Claire D Monroy, Marlene Meyer, Lisanne Schröer, Sarah A Gerson, Sabine Hunnius
Motor theories of action prediction propose that our motor system combines prior knowledge with incoming sensory input to predict other people's actions. This prior knowledge can be acquired through observational experience, with statistical learning being one candidate mechanism. But can knowledge learned through observation alone transfer into predictions generated in the motor system? To examine this question, we first trained infants at home with videos of an unfamiliar action sequence featuring statistical regularities...
December 7, 2017: NeuroImage
Itziar Familiar, Shalean M Collins, Alla Sikorskii, Horacio Ruisenor-Escudero, Barnabas Natamba, Paul Bangirana, Elizabeth M Widen, Daniel Achidri, Harriet Achola, Daniel Onen, Michael Boivin, Sera L Young
OBJECTIVE: We sought to evaluate whether maternal characteristics and infant developmental milieu were predictive of early cognitive development in HIV-exposed uninfected (HEU) and HIV-unexposed uninfected (HU) infants in Uganda. DESIGN: Longitudinal pregnancy study. METHODS: Ugandan women (n = 228) were enrolled into the Postnatal Nutrition and Psychosocial Health Outcomes study with a 2:1 HIV-uninfected: infected ratio. Maternal sociodemographic, perceived social support, and depressive symptomatology were assessed...
March 1, 2018: Journal of Acquired Immune Deficiency Syndromes: JAIDS
Robert Galinsky, Christopher A Lear, Justin M Dean, Guido Wassink, Simerdeep K Dhillon, Mhoyra Fraser, Joanne O Davidson, Laura Bennet, Alistair J Gunn
Children surviving preterm birth have a high risk of disability, particularly cognitive and learning problems. There is extensive clinical and experimental evidence that disability is now primarily related to dysmaturation of white and gray matter, defined by failure of oligodendrocyte maturation and neuronal dendritic arborization, rather than cell death alone. The etiology of this dysmaturation is multifactorial, with contributions from hypoxia-ischemia, infection/inflammation and barotrauma. Intriguingly, these factors can interact to both increase and decrease damage...
February 2018: Developmental Medicine and Child Neurology
John T Berger, Michele E Villalobos, Amy E Clark, Richard Holubkov, Murray M Pollack, Robert A Berg, Joseph A Carcillo, Heidi Dalton, Rick Harrison, Kathleen L Meert, Christopher J L Newth, Thomas P Shanley, David L Wessel, Kanwaljeet J S Anand, Jerry J Zimmerman, Ronald C Sanders, Teresa Liu, Jeri S Burr, Douglas F Willson, Allan Doctor, J Michael Dean, Tammara L Jenkins, Carol E Nicholson
OBJECTIVES: Pertussis can cause life-threatening illness in infants. Data regarding neurodevelopment after pertussis remain scant. The aim of this study was to assess cognitive development of infants with critical pertussis 1 year after PICU discharge. DESIGN: Prospective cohort study. SETTING: Eight hospitals comprising the Eunice Kennedy Shriver National Institute for Child Health and Human Development Collaborative Pediatric Critical Care Research Network and 18 additional sites across the United States...
November 7, 2017: Pediatric Critical Care Medicine
Friederike Barbara Haslbeck, Hans-Ulrich Bucher, Dirk Bassler, Cornelia Hagmann
BACKGROUND: Preterm birth is associated with increased risk of neurological impairment and deficits in cognition, motor function, and behavioral problems. Limited studies indicate that multi-sensory experiences support brain development in preterm infants. Music appears to promote neurobiological processes and neuronal learning in the human brain. Creative music therapy (CMT) is an individualized, interactive therapeutic approach based on the theory and methods of Nordoff and Robbins...
2017: Pilot and Feasibility Studies
Heidi Keller
This article argues that the relationships between culture and development are differential and systematic. Therefore the presentation of the Western middle-class developmental pathway in textbooks as universal is grossly neglecting the reality and the psychologies of the majority of the world' s population. First, the conception of culture as the representation of environmental conditions is presented. The level of formal education acts as organizer of social milieus that define different learning environments for children...
September 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
Christopher J D McKinlay, Jane M Alsweiler, Nicola S Anstice, Nataliia Burakevych, Arijit Chakraborty, J Geoffrey Chase, Gregory D Gamble, Deborah L Harris, Robert J Jacobs, Yannan Jiang, Nabin Paudel, Ryan J San Diego, Benjamin Thompson, Trecia A Wouldes, Jane E Harding
Importance: Hypoglycemia is common during neonatal transition and may cause permanent neurological impairment, but optimal intervention thresholds are unknown. Objective: To test the hypothesis that neurodevelopment at 4.5 years is related to the severity and frequency of neonatal hypoglycemia. Design, Setting, and Participants: The Children With Hypoglycemia and Their Later Development (CHYLD) Study is a prospective cohort investigation of moderate to late preterm and term infants born at risk of hypoglycemia...
October 1, 2017: JAMA Pediatrics
Naohiro Takemura, Toshio Inui, Takao Fukui
Pointing is one of the communicative actions that infants acquire during their first year of life. Based on a hypothesis that early pointing is triggered by emergent reaching behavior toward objects placed at out-of-reach distances, we proposed a neural network model that acquires reaching without explicit representation of 'targets'. The proposed model controls a two-joint arm in a horizontal plane, and it learns a loop of internal forward and inverse transformations; the former predicts the visual feedback of hand position and the latter generates motor commands from the visual input through random generation of the motor commands...
June 20, 2017: Developmental Science
Iryna Babik, James Cole Galloway, Michele A Lobo
Background: Non-object-oriented exploratory behaviors infants perform with their bodies and surfaces have been proposed to be key precursors of infants' object exploration, early learning, and future cognitive development. Little is known about the developmental trajectories of these behaviors, especially for infants born preterm. Objective: The purpose of the study was to longitudinally compare non-object-oriented exploratory behaviors performed by full-term and preterm infants...
September 1, 2017: Physical Therapy
Sarah E Berger, Anat Scher
In this first study of the impact of sleep on infants' problem solving of a locomotor task, 28 newly walking infants who were within a week of having given up crawling trained to navigate a shoulder-height tunnel to reach a caregiver waiting at the end. During the transitional window between crawling and walking, infants are reluctant to return to crawling, making this task uniquely challenging. Infants were randomly assigned to either nap or stay awake during a delay between training and a later test session...
June 6, 2017: Journal of Experimental Child Psychology
Robert W Emerson, Chloe Adams, Tomoyuki Nishino, Heather Cody Hazlett, Jason J Wolff, Lonnie Zwaigenbaum, John N Constantino, Mark D Shen, Meghan R Swanson, Jed T Elison, Sridhar Kandala, Annette M Estes, Kelly N Botteron, Louis Collins, Stephen R Dager, Alan C Evans, Guido Gerig, Hongbin Gu, Robert C McKinstry, Sarah Paterson, Robert T Schultz, Martin Styner, Bradley L Schlaggar, John R Pruett, Joseph Piven
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by social deficits and repetitive behaviors that typically emerge by 24 months of age. To develop effective early interventions that can potentially ameliorate the defining deficits of ASD and improve long-term outcomes, early detection is essential. Using prospective neuroimaging of 59 6-month-old infants with a high familial risk for ASD, we show that functional connectivity magnetic resonance imaging correctly identified which individual children would receive a research clinical best-estimate diagnosis of ASD at 24 months of age...
June 7, 2017: Science Translational Medicine
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