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Developmental Cognitive Neuroscience

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https://www.readbyqxmd.com/read/28521247/cognitive-performance-of-juvenile-monkeys-after-chronic-fluoxetine-treatment
#1
Mari S Golub, Edward P Hackett, Casey E Hogrefe, Csaba Leranth, John D Elsworth, Robert H Roth
Potential long term effects on brain development are a concern when drugs are used to treat depression and anxiety in childhood. In this study, male juvenile rhesus monkeys (three-four years of age) were dosed with fluoxetine or vehicle (N=16/group) for two years. Histomorphometric examination of cortical dendritic spines conducted after euthanasia at one year postdosing (N=8/group) suggested a trend toward greater dendritic spine synapse density in prefrontal cortex of the fluoxetine-treated monkeys. During dosing, subjects were trained for automated cognitive testing, and evaluated with a test of sustained attention...
May 1, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28499139/a-novel-form-of-perceptual-attunement-context-dependent-perception-of-a-native-contrast-in-14-month-old-infants
#2
Mathilde Fort, Perrine Brusini, M Julia Carbajal, Yue Sun, Sharon Peperkamp
By the end of their first year of life, infants have become experts in discriminating the sounds of their native language, while they have lost the ability to discriminate non-native contrasts. This type of phonetic learning is referred to as perceptual attunement. In the present study, we investigated the emergence of a context-dependent form of perceptual attunement in infancy. Indeed, some native contrasts are not discriminated in certain phonological contexts by adults, due to the presence of a language-specific process that neutralizes the contrasts in those contexts...
April 26, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28456088/neural-correlates-of-infants-sensitivity-to-vocal-expressions-of-peers
#3
Manuela Missana, Nicole Altvater-Mackensen, Tobias Grossmann
Responding to others' emotional expressions is an essential and early developing social skill among humans. Much research has focused on how infants process facial expressions, while much less is known about infants' processing of vocal expressions. We examined 8-month-old infants' processing of other infants' vocalizations by measuring event-related brain potentials (ERPs) to positive (infant laughter), negative (infant cries), and neutral (adult hummed speech) vocalizations. Our ERP results revealed that hearing another infant cry elicited an enhanced negativity (N200) at temporal electrodes around 200ms, whereas listening to another infant laugh resulted in an enhanced positivity (P300) at central electrodes around 300ms...
April 15, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28436834/active-auditory-experience-in-infancy-promotes-brain-plasticity-in-theta-and-gamma-oscillations
#4
Gabriella Musacchia, Silvia Ortiz-Mantilla, Naseem Choudhury, Teresa Realpe-Bonilla, Cynthia Roesler, April A Benasich
Language acquisition in infants is driven by on-going neural plasticity that is acutely sensitive to environmental acoustic cues. Recent studies showed that attention-based experience with non-linguistic, temporally-modulated auditory stimuli sharpens cortical responses. A previous ERP study from this laboratory showed that interactive auditory experience via behavior-based feedback (AEx), over a 6-week period from 4- to 7-months-of-age, confers a processing advantage, compared to passive auditory exposure (PEx) or maturation alone (Naïve Control, NC)...
April 15, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28436832/ventral-striatal-activity-links-adversity-and-reward-processing-in-children
#5
Niki H Kamkar, Daniel J Lewis, Wouter van den Bos, J Bruce Morton
Adversity impacts many aspects of psychological and physical development including reward-based learning and decision-making. Mechanisms relating adversity and reward processing in children, however, remain unclear. Here, we show that adversity is associated with potentiated learning from positive outcomes and impulsive decision-making, but unrelated to learning from negative outcomes. We then show via functional magnetic resonance imaging that the link between adversity and reward processing is partially mediated by differences in ventral striatal response to rewards...
April 15, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28436833/proactive-control-in-early-and-middle-childhood-an-erp-study
#6
Sarah Elke, Sandra A Wiebe
Children experience important cognitive control improvements in the transition to school. This study examined 4-5-year-olds' (n=17) and 7-8-year-olds' (n=22) ability to proactively deploy cognitive control. Children performed a cued task-switching paradigm presenting them with a cue indicating which attribute, color or shape, they should use to sort the upcoming stimulus. Following both cue and stimulus, we analyzed two event-related potentials: the P2 and P3, positive peaks reflecting sensory and attentional components of cognitive control, respectively...
April 14, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28457745/sensory-hypersensitivity-predicts-enhanced-attention-capture-by-faces-in-the-early-development-of-asd
#7
E J H Jones, G Dawson, S J Webb
Sensory sensitivity is prevalent among young children with ASD, but its relation to social communication impairment is unclear. Recently, increased sensory hypersensitivity has been linked to greater activity of the neural salience network (Green et al., 2016). Increased neural sensitivity to stimuli, especially social stimuli, could provide greater opportunity for social learning and improved outcomes. Consistent with this framework, in Experiment 1 we found that parent report of greater sensory hypersensitivity at 2 years in toddlers with ASD (N=27) was predictive of increased neural responsiveness to social stimuli (larger amplitude event-related potential/ERP responses to faces at P1, P400 and Nc) at 4 years, and this in turn was related to parent report of increased social approach at 4 years...
April 12, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28436831/gamma-power-in-rural-pakistani-children-links-to-executive-function-and-verbal-ability
#8
Amanda R Tarullo, Jelena Obradović, Brandon Keehn, Muneera A Rasheed, Saima Siyal, Charles A Nelson, Aisha K Yousafzai
Children in low- and middle-income countries are at high risk of cognitive deficits due to environmental deprivation that compromises brain development. Despite the high prevalence of unrealized cognitive potential, very little is known about neural correlates of cognition in this population. We assessed resting EEG power and cognitive ability in 105 highly disadvantaged 48-month-old children in rural Pakistan. An increase in EEG power in gamma frequency bands (21-30Hz and 31-45Hz) was associated with better executive function...
March 31, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28442224/functional-hyperconnectivity-vanishes-in-children-with-developmental-dyscalculia-after-numerical-intervention
#9
Lars Michels, Ruth O'Gorman, Karin Kucian
Developmental dyscalculia (DD) is a developmental learning disability associated with deficits in processing numerical and mathematical information. Although behavioural training can reduce these deficits, it is unclear which neuronal resources show a functional reorganization due to training. We examined typically developing (TD) children (N=16, mean age: 9.5 years) and age-, gender-, and handedness-matched children with DD (N=15, mean age: 9.5 years) during the performance of a numerical order task with fMRI and functional connectivity before and after 5-weeks of number line training...
March 21, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28442223/diurnal-cortisol-after-early-institutional-care-age-matters
#10
Jessica E Flannery, Laurel J Gabard-Durnam, Mor Shapiro, Bonnie Goff, Christina Caldera, Jennifer Louie, Dylan G Gee, Eva H Telzer, Kathryn L Humphreys, Daniel S Lumian, Nim Tottenham
Several studies have shown that young children who have experienced early caregiving adversity (e.g. previously institutionalization (PI)) exhibit flattened diurnal cortisol slopes; however, less is known about how these patterns might differ between children and adolescents, since the transition between childhood and adolescence is a time of purported plasticity in the hypothalamic-pituitary-adrenal (HPA) axis. PI youth experience a massive improvement in caregiving environment once adopted into families; therefore we anticipated that a developmental increase in HPA axis plasticity during adolescence might additionally allow for an enhanced enrichment effect by the adoptive family...
March 21, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28416273/attention-allocation-and-social-worries-predict-interpretations-of-peer-related-social-cues-in-adolescents
#11
Simone P W Haller, Brianna R Doherty, Mihaela Duta, Kathrin Cohen Kadosh, Jennifer Y F Lau, Gaia Scerif
Adolescence is a sensitive period for increases in normative but also debilitating social fears and worries. As the interpretation of interpersonal cues is pertinent to social anxiety, investigating mechanisms that may underlie biases in social cue appraisal is important. Fifty-one adolescents from the community aged 14-19 were presented with self- and other-relevant naturalistic social scenes for 5s and then required to rate either a negative or a positive interpretation of the scene. Eye-tracking data were collected during the free viewing period to index attentional deployment...
March 18, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28372982/neural-correlates-of-face-processing-in-etiologically-distinct-12-month-old-infants-at-high-risk-of-autism-spectrum-disorder
#12
Maggie W Guy, John E Richards, Bridgette L Tonnsen, Jane E Roberts
Neural correlates of face processing were examined in 12-month-olds at high-risk for autism spectrum disorder (ASD), including 21 siblings of children with ASD (ASIBs) and 15 infants with fragile X syndrome (FXS), as well as 21 low-risk (LR) controls. Event-related potentials were recorded to familiar and novel face and toy stimuli. All infants demonstrated greater N290 amplitude to faces than toys. At the Nc component, LR infants showed greater amplitude to novel stimuli than to their mother's face and own toy, whereas infants with FXS showed the opposite pattern of responses and ASIBs did not differentiate based on familiarity...
March 16, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28351534/learning-word-order-at-birth-a-nirs-study
#13
Silvia Benavides-Varela, Judit Gervain
In language, the relative order of words in sentences carries important grammatical functions. However, the developmental origins and the neural correlates of the ability to track word order are to date poorly understood. The current study therefore investigates the origins of infants' ability to learn about the sequential order of words, using near-infrared spectroscopy (NIRS) with newborn infants. We have conducted two experiments: one in which a word order change was implemented in 4-word sequences recorded with a list intonation (as if each word was a separate item in a list; list prosody condition, Experiment 1) and one in which the same 4-word sequences were recorded with a well-formed utterance-level prosodic contour (utterance prosody condition, Experiment 2)...
March 14, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28359682/anticipatory-representations-of-reward-and-threat-in-perceptual-areas-from-preadolescence-to-late-adolescence
#14
Philippa Howsley, Liat Levita
This study examined whether changes in perceptual processes can partially account for the increase in reward-orientated behaviour during adolescence. This was investigated by examining reinforcement-dependent potentiation to discriminative stimuli (S(D)) that predicted rewarding or threatening outcomes. To that end, perceptual event-related potentials that are modulated by motivationally salient stimuli, the N170 and Late Positive Potential (LPP), were recorded from 30 preadolescents (9-12 years), 30 adolescents (13-17 years), and 34 late adolescents (18-23 years) while they completed an instrumental task in which they emitted or omitted a motor response to obtain rewards and avoid losses...
March 12, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28342780/a-neural-basis-for-the-visual-sense-of-number-and-its-development-a-steady-state-visual-evoked-potential-study-in-children-and-adults
#15
Joonkoo Park
While recent studies in adults have demonstrated the existence of a neural mechanism for a visual sense of number, little is known about its development and whether such a mechanism exists at young ages. In the current study, I introduce a novel steady-state visual evoked potential (SSVEP) technique to objectively quantify early visual cortical sensitivity to numerical and non-numerical magnitudes of a dot array. I then examine this neural sensitivity to numerical magnitude in children between three and ten years of age and in college students...
March 2, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28292645/one-hand-two-hands-two-people-prospective-sensorimotor-control-in-children-with-autism
#16
Caterina Ansuini, Jessica Podda, Francesca Maria Battaglia, Edvige Veneselli, Cristina Becchio
Where grasps are made reveals how grasps are planned. The grasp height effect predicts that, when people take hold of an object to move it to a new position, the grasp height on the object is inversely related to the height of the target position. In the present study, we used this effect as a window into the prospective sensorimotor control of children with autism spectrum disorders without accompanying intellectual impairment. Participants were instructed to grasp a vertical cylinder and move it from a table (home position) to a shelf of varying height (target position)...
March 2, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28314184/how-does-the-body-representation-system-develop-in-the-human-brain
#17
Aurelie Fontan, Fabien Cignetti, Bruno Nazarian, Jean-Luc Anton, Marianne Vaugoyeau, Christine Assaiante
Exploration of the body representation system (BRS) from kinaesthetic illusions in fMRI has revealed a complex network composed of sensorimotor and frontoparietal components. Here, we evaluated the degree of maturity of this network in children aged 7-11 years, and the extent to which structural factors account for network differences with adults. Brain activation following tendon vibration at 100Hz ('illusion') and 30Hz ('no illusion') were analysed using the two-stage random effects model, with or without white and grey matter covariates...
February 28, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28285127/the-neural-and-behavioral-correlates-of-social-evaluation-in-childhood
#18
Michelle Achterberg, Anna C K van Duijvenvoorde, Mara van der Meulen, Saskia Euser, Marian J Bakermans-Kranenburg, Eveline A Crone
Being accepted or rejected by peers is highly salient for developing social relations in childhood. We investigated the behavioral and neural correlates of social feedback and subsequent aggression in 7-10-year-old children, using the Social Network Aggression Task (SNAT). Participants viewed pictures of peers that gave positive, neutral or negative feedback to the participant's profile. Next, participants could blast a loud noise towards the peer, as an index of aggression. We included three groups (N=19, N=28 and N=27) and combined the results meta-analytically...
February 27, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28268177/prospective-relations-between-resting-state-connectivity-of-parietal-subdivisions-and-arithmetic-competence
#19
Gavin R Price, Darren J Yeo, Eric D Wilkey, Laurie E Cutting
The present study investigates the relation between resting-state functional connectivity (rsFC) of cytoarchitectonically defined subdivisions of the parietal cortex at the end of 1st grade and arithmetic performance at the end of 2nd grade. Results revealed a dissociable pattern of relations between rsFC and arithmetic competence among subdivisions of intraparietal sulcus (IPS) and angular gyrus (AG). rsFC between right hemisphere IPS subdivisions and contralateral IPS subdivisions positively correlated with arithmetic competence...
February 22, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28279916/amygdala-reactivity-predicts-adolescent-antisocial-behavior-but-not-callous-unemotional-traits
#20
Hailey L Dotterer, Luke W Hyde, Johnna R Swartz, Ahmad R Hariri, Douglas E Williamson
Recent neuroimaging studies have suggested divergent relationships between antisocial behavior (AB) and callous-unemotional (CU) traits and amygdala reactivity to fearful and angry facial expressions in adolescents. However, little work has examined if these findings extend to dimensional measures of behavior in ethnically diverse, non-clinical samples, or if participant sex, ethnicity, pubertal stage, and age moderate associations. We examined links between amygdala reactivity and dimensions of AB and CU traits in 220 Hispanic and non-Hispanic Caucasian adolescents (age 11-15; 49...
April 2017: Developmental Cognitive Neuroscience
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