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Executive function in ADHD

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https://www.readbyqxmd.com/read/28219751/evidence-for-a-role-of-corticopetal-noradrenergic-systems-in-the-development-of-executive-function
#1
David J Mokler, Christine E Miller, Jill A McGaughy
Adolescence is a period during which many aspects of executive function are maturing. Much of the literature has focused on discrepancies between sub-cortical and cortical development that is hypothesized to lead to over-processing of reinforcement related stimuli unchecked by fully matured response inhibition. Specifically, maturation of sub-cortical dopaminergic systems that terminate in the nucleus accumbens has been suggested to occur prior to the full maturation of corticopetal dopaminergic systems. However, converging evidence supports the hypothesis that many aspects of cognitive control are critically linked to cortical noradrenergic systems, that the effectiveness of drugs used to treat disorders of executive function, e...
February 17, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28211596/the-structure-of-adult-adhd
#2
Lenard A Adler, Stephen V Faraone, Thomas J Spencer, Patricia Berglund, Samuel Alperin, Ronald C Kessler
Although DSM-5 stipulates that symptoms of attention-deficit hyperactivity disorder (ADHD) are the same for adults as children, clinical observations suggest that adults have more diverse deficits than children in higher-level executive functioning and emotional control. Previous psychometric analyses to evaluate these observations have been limited in ways addressed in the current study, which analyzes the structure of an expanded set of adult ADHD symptoms in three pooled US samples: a national household sample, a sample of health plan members, and a sample of adults referred for evaluation at an adult ADHD clinic...
February 17, 2017: International Journal of Methods in Psychiatric Research
https://www.readbyqxmd.com/read/28190620/propranolol-treatment-of-infantile-hemangioma-is-not-associated-with-psychological-problems-at-7%C3%A2-years-of-age
#3
Andre Vadimovich Moyakine, Saskia Spillekom-van Koulil, Catharina Joanna Maria van der Vleuten
BACKGROUND: Concern has been raised about the potential long-term effects of propranolol treatment for infantile hemangioma (IH). OBJECTIVES: We sought to assess psychologic (social, emotional, behavioral, and executive) functioning in children treated with propranolol for IH. METHODS: Twenty-seven patients with IH (6.1-7.6 years of age) treated with propranolol for ≥6 months during infancy, and without other developmental risk factors, were recruited...
February 9, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28176434/network-level-assessment-of-reward-related-activation-in-patients-with-adhd-and-healthy-individuals
#4
Daniel von Rhein, Christian F Beckmann, Barbara Franke, Jaap Oosterlaan, Dirk J Heslenfeld, Pieter J Hoekstra, Catharina A Hartman, Marjolein Luman, Stephen V Faraone, Roshan Cools, Jan K Buitelaar, Maarten Mennes
INTRODUCTION: Reward processing is a key aspect of cognitive control processes, putatively instantiated by mesolimbic and mesocortical brain circuits. Deficient signaling within these circuits has been associated with psychopathology. We applied a network discovery approach to assess specific functional networks associated with reward processing in participants with attention-deficit/hyperactivity disorder (ADHD). METHODS: To describe task-related processes in terms of integrated functional networks, we applied independent component analysis (ICA) to task response maps of 60 healthy participants who performed a monetary incentive delay (MID) task...
February 8, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28174127/altered-functional-connectivity-in-default-mode-network-in-internet-gaming-disorder-influence-of-childhood-adhd
#5
Deokjong Lee, Junghan Lee, Jung Eun Lee, Young-Chul Jung
OBJECTIVE: Internet gaming disorder (IGD) is a type of behavioral addiction characterized by abnormal executive control, leading to loss of control over excessive gaming. Attention deficit and hyperactivity disorder (ADHD) is one of the most common comorbid disorders in IGD, involving delayed development of the executive control system, which could predispose individuals to gaming addiction. We investigated the influence of childhood ADHD on neural network features of IGD. METHODS: Resting-state functional magnetic resonance imaging analysis was performed on 44 young, male IGD subjects with and without childhood ADHD and 19 age-matched, healthy male controls...
February 5, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28167942/distinct-cytokine-and-chemokine-profiles-in-autism-spectrum-disorders
#6
Yvonne M Y Han, Winnie K Y Cheung, Chun Kwok Wong, Sophia L Sze, Timmy W S Cheng, Michael K Yeung, Agnes S Chan
Previous studies have shown that immunological factors are involved in the pathogenesis of autism spectrum disorders (ASDs). However, this research has been conducted almost exclusively in Western contexts, and only a handful of studies on immune measures have been conducted in Asian populations, such as Chinese populations. The present study examined whether immunological abnormalities are associated with cognitive deficits and problem behaviors in Chinese children with ASD and whether these children show different immunological profiles...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28157666/cognitive-and-behavioural-predictors-of-adolescents-communicative-perspective-taking-and-social-relationships
#7
Elizabeth S Nilsen, Sarah A Bacso
Given the pivotal role that social interactions play for adolescents' well-being, understanding the factors that influence communication is key. The present study examined relations between adolescents' communicative perspective-taking, executive function skills, and ADHD traits and explored the role communicative perspective-taking plays in peer relations. Data was collected from a community sample of 15 to 19-years-olds (N = 46) in Waterloo, Canada. Two communicative perspective-taking tasks required participants to infer speakers' communicative intentions...
January 31, 2017: Journal of Adolescence
https://www.readbyqxmd.com/read/28154547/gait-in-children-with-attention-deficit-hyperactivity-disorder-in-a-dual-task-paradigm
#8
Olivia Manicolo, Alexander Grob, Priska Hagmann-von Arx
The aim was to examine gait in school-aged children with attention-deficit hyperactivity disorder (ADHD) and typically developing controls in a dual-task paradigm. Thirty children with ADHD (without or off medication) aged 7-13 years and 28 controls walked without an additional task (single-task walking) and while performing a concurrent cognitive or motor task (dual-task walking). Gait was assessed using GAITRite recordings of spatiotemporal and variability gait parameters. Compared to single-task walking, dual-tasking significantly altered walking performance of children with and without ADHD, whereby dual-task effects on gait were not different between the two groups...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28154545/influence-of-the-slc6a3-dat1-gene-on-multifaceted-measures-of-self-regulation-in-preschool-children
#9
Lina M Cómbita, Pascale Voelker, Alicia Abundis-Gutiérrez, Joan P Pozuelos, M Rosario Rueda
Development of self-regulation, the capacity to voluntarily modulate thoughts, emotions and actions is strongly related to the maturation of the dopamine-mediated executive attention network (EAN). The attention control processes associated with the EAN greatly overlap with efficiency of the executive functions and are correlated with measures of effortful control. Regulation of dopamine levels within the EAN, particularly in the basal ganglia is carried out by the action of dopamine transporters. In humans, the SLC6A3/DAT1 gene carries out the synthesis of the DAT protein...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28153568/the-relationship-between-motor-performance-and-parent-rated-executive-functioning-in-3-to-5-year-old-children-what-is-the-role-of-confounding-variables
#10
Suzanne Houwen, Gerda van der Veer, Jan Visser, Marja Cantell
It is generally agreed that motor performance and executive functioning (EF) are intertwined. As the literature on this issue concerning preschool children is scarce, we examined the relationship between motor performance and parent-rated EF in a sample of 3- to 5-year-old children with different levels of motor skill proficiency, while controlling for age, gender, socio-economic status (SES), and attention-deficit-hyperactivity disorder (ADHD) symptomatology. EF was reported by parents of 153 children (mean age 4years 1months, SD 8months; 75 male) by means of the Behaviour Rating Inventory of Executive Function-Preschool version (BRIEF-P)...
January 30, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28119021/reduced-relative-volume-in-motor-and-attention-regions-in-developmental-coordination-disorder-a-voxel-based-morphometry-study
#11
Jess E Reynolds, Melissa K Licari, Siobhan L Reid, Catherine Elliott, Anne M Winsor, Michael Bynevelt, Jac Billington
BACKGROUND AND OBJECTIVES: Developmental coordination disorder (DCD) is a prevalent childhood movement disorder, impacting the ability to perform movement skills at an age appropriate level. Although differences in grey matter (GM) volumes have been found in related developmental disorders, no such evidence has been linked with DCD to date. This cross-sectional study assessed structural brain differences in children with and without DCD. METHODS: High-resolution structural images were acquired from 44 children aged 7...
January 21, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28118856/nirs-based-neurofeedback-training-in-a-virtual-reality-classroom-for-children-with-attention-deficit-hyperactivity-disorder-study-protocol-for-a-randomized-controlled-trial
#12
Friederike Blume, Justin Hudak, Thomas Dresler, Ann-Christine Ehlis, Jan Kühnhausen, Tobias J Renner, Caterina Gawrilow
BACKGROUND: Children with attention-deficit/hyperactivity disorder (ADHD) suffer from attention deficits, motor hyperactivity, and impulsive behaviour. These impairments are experienced at home, at school, and with friends. Functional imaging studies show that ADHD behaviour and impairments in executive functions (EFs) are mirrored by aberrant neurophysiological functioning. Moreover, several studies show that ADHD behaviour, impairments in EFs, and a lack of self-control contribute to poor school performance...
January 24, 2017: Trials
https://www.readbyqxmd.com/read/28111275/concomitant-behavioral-and-pfc-neuronal-activity-recorded-following-dose-response-protocol-of-mpd-in-adult-male-rats
#13
Sidish S Venkataraman, Catherine Claussen, Michael Joseph, Nachum Dafny
The use of methylphenidate (MPD), a commonly prescribed drug to treat attention-deficit hyperactivity disorder (ADHD), has steadily increased over the past 25 years. This trend has been accompanied by more MPD abuse by ordinary individuals for its cognitive enhancing effects. Therefore, understanding the effects of MPD on the prefrontal cortex (PFC), a brain area involved in higher cortical processing such as executive function, language, planning, and attention regulation, is of particular importance. The goal of this study is to investigate the effects of acute and chronic dose-response characteristics following MPD exposure on both the PFC neuronal population and behavioral activity in freely behaving animals implanted previously with permanent electrodes within the PFC...
January 19, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28105895/prefrontal-cortex-dysfunction-in-hypoxic-ischaemic-encephalopathy-contributes-to-executive-function-impairments-in-rats-potential-contribution-for-attention-deficit-hyperactivity-disorder
#14
Patrícia Maidana Miguel, Bruna Ferrary Deniz, Iohanna Deckmann, Heloísa Deola Confortim, Ramiro Diaz, Daniela Pereira Laureano, Patrícia Pelufo Silveira, Lenir Orlandi Pereira
OBJECTIVES: The attention-deficit/hyperactivity disorder (ADHD) compromises the quality of life of individuals including adaptation to the social environment. ADHD aetiology includes perinatal conditions such as hypoxic-ischaemic events; preclinical studies have demonstrated attentional deficits and impulsive-hyperactive outcomes after neonatal hypoxic and/or ischaemic intervention, but data are missing to understand this relationship. Thus, the aim of this study was to evaluate executive function (EF) and impulsivity, and tissue integrity and dopaminergic function in the prefrontal cortex (PFC) of rats submitted to hypoxia-ischaemia (HI)...
January 20, 2017: World Journal of Biological Psychiatry
https://www.readbyqxmd.com/read/28079875/early-postnatal-illness-severity-scores-predict-neurodevelopmental-impairments-at-10-years-of-age-in-children-born-extremely-preterm
#15
J W Logan, O Dammann, E N Allred, C Dammann, K Beam, R M Joseph, T M O'Shea, A Leviton, K C K Kuban
OBJECTIVE: A neonatal illness severity score, The Score for Neonatal Acute Physiology-II (SNAP-II), predicts neurodevelopmental impairments at two years of age among children born extremely preterm. We sought to evaluate to what extent SNAP-II is predictive of cognitive and other neurodevelopmental impairments at 10 years of age. STUDY DESIGN: In a cohort of 874 children born before 28 weeks of gestation, we prospectively collected clinical, physiologic and laboratory data to calculate SNAP-II for each infant...
January 12, 2017: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/28079611/it-is-just-attention-deficit-hyperactivity-disorder%C3%A2-or-is-it
#16
Dana C Won, Christian Guilleminault, Peter J Koltai, Stacey D Quo, Martin T Stein, Irene M Loe
Carly is a 5-year-old girl who presents for an interdisciplinary evaluation due to behaviors at school and home suggestive of attention-deficit hyperactivity disorder (ADHD). Parent report of preschool teacher concerns was consistent with ADHD. Psychological testing showed verbal, visual-spatial, and fluid reasoning IQ scores in the average range; processing speed and working memory were below average. Carly's behavior improved when her mother left the room, and she was attentive during testing with a psychologist...
February 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28068954/cognitively-and-physically-demanding-exergaming-to-improve-executive-functions-of-children-with-attention-deficit-hyperactivity-disorder-a-randomised-clinical-trial
#17
Valentin Benzing, Mirko Schmidt
BACKGROUND: Attention deficit hyperactivity disorder (ADHD) is one of the most common mental disorders observed in childhood and adolescence. Its key symptoms - reduced attention, poor control of impulses as well as increased motor activity - are associated with decreased executive functions performance, finally affecting academic achievement. Although drug treatments usually show some effect, alternative treatments are continually being sought, due to lack of commitment and possible side effects...
January 10, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28050707/effect-of-parental-obesity-and-gestational-diabetes-on-child-neuropsychological-and-behavioral-development-at-4%C3%A2-years-of-age-the-rhea-mother-child-cohort-crete-greece
#18
Vasiliki Daraki, Theano Roumeliotaki, Katerina Koutra, Vaggelis Georgiou, Mariza Kampouri, Andriani Kyriklaki, Marina Vafeiadi, Stathis Papavasiliou, Manolis Kogevinas, Leda Chatzi
Studies have suggested an association between maternal obesity pre-pregnancy and gestational diabetes (GDM) with impaired offspring neurodevelopment, but it is not clear if these associations are explained by shared familiar characteristics. We aimed to assess the associations of maternal and paternal obesity, maternal glucose intolerance in early pregnancy and GDM, with offspring neurodevelopment at 4 years of age. We included 772 mother-child pairs from the "Rhea" Mother-Child cohort in Crete, Greece. Data on maternal/paternal body mass index (BMI) and maternal fasting serum samples for glucose and insulin measurements were collected at 12 weeks of gestation...
January 3, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28050182/working-memory-training-in-the-form-of-structured-games-in-children-with-attention-deficit-hyperactivity-disorder
#19
Fatemeh Khalili Kermani, Mohammad Reza Mohammadi, Fariba Yadegari, Fatemeh Haresabadi, Seyed Mehdi Sadeghi
Objective: In this study, a new training method of working memory (WM) was used in the form of structured games, and the effect of training was evaluated with a controlled design. The training method of WM in the form of structured games includes 20 sets of structured games that can improve WM and performance of executive functions. Method: Sixty children with attention deficit hyperactivity disorder (ADHD) aged 8.5 to 11.2 years (35 boys), using no stimulant medication were selected. We randomly assigned 30 participants to the experimental group and provided them with WM training...
October 2016: Iranian Journal of Psychiatry
https://www.readbyqxmd.com/read/28042975/mathematical-learning-disabilities-and-attention-deficit-and-or-hyperactivity-disorder-a-study-of-the-cognitive-processes-involved-in-arithmetic-problem-solving
#20
Valentín Iglesias-Sarmiento, Manuel Deaño, Sonia Alfonso, Ángeles Conde
BACKGROUND: The purpose of this study was to examine the contribution of cognitive functioning to arithmetic problem solving and to explore the cognitive profiles of children with attention deficit and/or hyperactivity disorder (ADHD) and with mathematical learning disabilities (MLD). METHODS: The sample was made up of a total of 90 students of 4th, 5th, and 6th grade organized in three: ADHD (n=30), MLD (n=30) and typically achieving control (TA; n=30) group. Assessment was conducted in two sessions in which the PASS processes and arithmetic problem solving were evaluated...
December 30, 2016: Research in Developmental Disabilities
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