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attention deficiency hyperactivity disorder

J Rydkjær, J R Møllegaard Jepsen, A K Pagsberg, B Fagerlund, B Y Glenthøj, B Oranje
BACKGROUND: Deficient mismatch negativity (MMN) has been proposed as a candidate biomarker in schizophrenia and may therefore be potentially useful in early identification and intervention in early onset psychosis. In this study we explored whether deficits in the automatic orienting and reorienting responses, measured as MMN and P3a amplitude, are present in young adolescents with first-episode psychosis (FEP) and whether findings are specific to psychosis compared to young adolescents with attention deficit hyperactivity disorder (ADHD)...
October 25, 2016: Psychological Medicine
Connor H G Patros, R Matt Alderson, Kristen L Hudec, Stephanie J Tarle, Sarah E Lea
Changes in motor activity were examined across control and executive function (EF) tasks that differ with regard to demands placed on visuospatial working memory (VS-WM) and self-control processes. Motor activity was measured via actigraphy in 8- to 12-year-old boys with (n=15) and without (n=17) attention-deficit/hyperactivity disorder (ADHD) during the completion of VS-WM, self-control, and control tasks. Results indicated that boys with ADHD, relative to typically developing boys, exhibited greater motor activity across tasks, and both groups' activity was greater during EF tasks relative to control tasks...
October 21, 2016: Journal of Experimental Child Psychology
Elke Godefroid, Jan R Wiersema
The current study examined the mechanisms of attention allocation in adult ADHD to investigate the frequently reported diminished target processing in ADHD as well as the less consistently observed increased distractibility by task-irrelevant distracting stimuli. To this end, while high-density EEG was recorded, 25 adults with ADHD and 23 healthy controls completed a 4-stimulus oddball task that comprised a frequently presented standard stimulus and 3 different categories of equally infrequent stimuli: task-relevant targets, task-irrelevant nontargets, and task-irrelevant unfamiliar novels...
October 13, 2016: Journal of Abnormal Psychology
Aneeqa Noor, Saadia Zahid
Synaptosomal-associated protein 25 kDa (SNAP-25) is one of the key proteins involved in formation of neural soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) complexes, which are responsible for the calcium-dependent exocytosis of neurotransmitters - a major step in neurotransmission and the key to normal functioning of brain. Several studies have reported abnormalities in its expression and structure and highlighted it as an important player in pathology of various neurological disorders like Alzheimer's disease, schizophrenia, attention deficient hyperactivity disorder, epilepsy and few others...
October 13, 2016: International Journal of Neuroscience
May Loong Tan, Jacqueline J Ho, Keng Hwang Teh
BACKGROUND: About 5% of school children have a specific learning disorder, defined as unexpected failure to acquire adequate abilities in reading, writing or mathematics that is not a result of reduced intellectual ability, inadequate teaching or social deprivation. Of these events, 80% are reading disorders. Polyunsaturated fatty acids (PUFAs), in particular, omega-3 and omega-6 fatty acids, which normally are abundant in the brain and in the retina, are important for learning. Some children with specific learning disorders have been found to be deficient in these PUFAs, and it is argued that supplementation of PUFAs may help these children improve their learning abilities...
September 28, 2016: Cochrane Database of Systematic Reviews
Hanan E Shamseldin, Ikuo Masuho, Ahmed Alenizi, Suad Alyamani, Dipak N Patil, Niema Ibrahim, Kirill A Martemyanov, Fowzan S Alkuraya
BACKGROUND: Neuropsychiatric disorders are common forms of disability in humans. Despite recent progress in deciphering the genetics of these disorders, their phenotypic complexity continues to be a major challenge. Mendelian neuropsychiatric disorders are rare but their study has the potential to unravel novel mechanisms that are relevant to their complex counterparts. RESULTS: In an extended consanguineous family, we identified a novel neuropsychiatric phenotype characterized by severe speech impairment, variable expressivity of attention deficit hyperactivity disorder (ADHD), and motor delay...
September 27, 2016: Genome Biology
Panayotis K Thanos, Jianmin Zhuo, Lisa Robison, Ronald Kim, Mala Ananth, Ilon Choai, Adam Grunseich, Nicola M Grissom, Robert George, Foteini Delis, Teresa M Reyes
Birthweight is a marker for suboptimal fetal growth and development in utero. Offspring can be born large for gestational age (LGA), which is linked to maternal obesity or excessive gestational weight gain, as well as small for gestational age (SGA), arising from nutrient or calorie deficiency, placental dysfunction, or other maternal conditions (hypertension, infection). In humans, LGA and SGA babies are at an increased risk for certain neurodevelopmental disorders, including Attention Deficit/Hyperactivity Disorder, schizophrenia, and social and mood disorders...
September 22, 2016: International Journal of Developmental Neuroscience
D Galland, I Tisserant, L Notardonato
INTRODUCTION: Attention deficit hyperactivity disorder (ADHD) is one of the most common and challenging childhood neurobehavioral disorders. ADHD may have behavioral consequences and involvements in minor and serious crimes. Our work aims to establish links between ADHD and forensic psychiatry. METHODS: A review of international scientific literature concerning the relationship between ADHD and forensic psychiatry was conducted using the PudMed electronic database...
September 13, 2016: L'Encéphale
Namik Kaya, Maysoon Alsagob, Maria Cristina D'Adamo, Albandary Al-Bakheet, Sonia Hasan, Maria Muccioli, Faten B Almutairi, Rawan Almass, Mazhor Aldosary, Dorota Monies, Osama M Mustafa, Banan Alyounes, Rosan Kenana, Jawaher Al-Zahrani, Eva Naim, Faisal S Binhumaid, Alya Qari, Fatema Almutairi, Brian Meyer, Timothy F Plageman, Mauro Pessia, Dilek Colak, Mohammed Al-Owain
BACKGROUND: Voltage-gated potassium channels are highly diverse proteins representing the most complex class of voltage-gated ion channels from structural and functional perspectives. Deficiency of these channels usually results in various human disorders. OBJECTIVES: To describe a novel autosomal recessive syndrome associated with KCNA4 deficiency leading to congenital cataract, abnormal striatum, intellectual disability and attention deficit hyperactivity disorder...
August 31, 2016: Journal of Medical Genetics
Bradley S Gibson, Dawn M Gondoli, Kathryn J Ralph, Pedro Sztybel
The dual-component model postulates that working memory capacity consists of two dissociable components: maintenance in primary memory (PM) and retrieval from secondary memory (SM). Recent application of this model to attention-deficit/hyperactivity disorder (ADHD) has revealed that the SM component is more deficient than the PM component across both verbal and spatial modalities. The present study attempts to strengthen this conclusion by addressing two weaknesses in the previous study. First, the present study shows that the SM component continues to be more deficient than the PM component across both modalities under conditions in which (1) all participants were instructed to use the same recall strategy (resulting in the exclusion of fewer participants); and, (2) individual differences in this strategy were controlled...
August 31, 2016: Child Neuropsychology: a Journal on Normal and Abnormal Development in Childhood and Adolescence
Noa Herz, Inbal Reuveni, Abraham Goldstein, Tuvia Peri, Shaul Schreiber, Yuval Harpaz, Omer Bonne
OBJECTIVE: Patients suffering from posttraumatic stress disorder (PTSD) exhibit hyper arousal symptoms and attention problems which were frequently investigated using the P3 event-related potentials (ERPs). Our study aimed at providing more precise knowledge of the functional significance of the P3 alteration seen in PTSD by revealing its spatio-temporal dynamics. METHODS: Fifteen PTSD patients and fifteen healthy trauma-exposed controls participated in a three-tone "oddball" task while their brain activity was recorded by magnetoencephalography (MEG)...
October 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
Refilwe Gloria Pila-Nemutandani, Anneke Meyer
OBJECTIVE: To compare planning behaviour (frontal lobe functioning) in children with and without symptoms of attention deficit hyperactivity disorder (ADHD). METHOD: A total of 90 children (45 with symptoms of ADHD and 45 matched controls without ADHD symptoms) of both genders, who were medication naïve, from the Balobedu culture (Limpopo province, South Africa), aged 7-13 years, participated in the study. The performance of the two groups was compared on a test of planning and problem solving, the Tower of London (ToL) task...
July 2016: Journal of Child and Adolescent Mental Health
Keziban Aslı Bala, Murat Doğan, Sultan Kaba, Tuba Mutluer, Oktay Aslan, Sekibe Zehra Doğan
BACKGROUND: The aim of this study was to analyze thyroid hormones and antibodies, ferritin, vitamins B12 and D, adrenal and gonadal steroid levels, and celiac antibodies in children diagnosed with attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). METHODS: Between February 2014 and July 2014, a total of 77 children and adolescents (31 girls, 46 boys) who were admitted to the Van Training and Research Hospital were included in the study...
September 1, 2016: Journal of Pediatric Endocrinology & Metabolism: JPEM
Keith Fluegge
Cruchet et al. attempt to tease out the myths and facts surrounding the growing popularity of certain dietary approaches in the management of neurodevelopmental disorders, like attention-deficit hyperactivity disorder (ADHD) and autism spectrum disorders (ASDs). The authors identify a particular exclusionary-type approach that seeks to eliminate dietary gluten. Although the relationship between celiac disease (CD) and ADHD/ASD is not well established, a repeated clinical feature noted in CD is the elevated levels of nitric oxide in serum and urine...
2016: Annals of Nutrition & Metabolism
S Glerup, U Bolcho, S Mølgaard, S Bøggild, C B Vaegter, A H Smith, J L Nieto-Gonzalez, P L Ovesen, L F Pedersen, A N Fjorback, M Kjolby, H Login, M M Holm, O M Andersen, J R Nyengaard, T E Willnow, K Jensen, A Nykjaer
SorCS2 is a member of the Vps10p-domain receptor gene family receptors with critical roles in the control of neuronal viability and function. Several genetic studies have suggested SORCS2 to confer risk of bipolar disorder, schizophrenia and attention deficit-hyperactivity disorder. Here we report that hippocampal N-methyl-d-aspartate receptor-dependent synaptic plasticity is eliminated in SorCS2-deficient mice. This defect was traced to the ability of SorCS2 to form complexes with the neurotrophin receptor p75(NTR), required for pro-brain-derived neurotrophic factor (BDNF) to induce long-term depression, and with the BDNF receptor tyrosine kinase TrkB to elicit long-term potentiation...
July 26, 2016: Molecular Psychiatry
Saleh M H Mohamed, Norbert A Börger, Reint H Geuze, Jaap J van der Meere
Evidence is accumulating that individuals with Attention-Deficit/Hyperactivity Disorder (ADHD) do not adjust their responses after committing errors. Post-error response adjustments are taken to reflect, among others, error monitoring that is essential for learning, flexible behavioural adaptation, and achieving future goals. Many behavioural studies have suggested that atypical lateral brain functions and difficulties in allocating effort to protect performance against stressors (i.e., state regulation) are key factors in ADHD...
October 2016: Brain and Cognition
Joanneke Weerdmeester, Maaike Cima, Isabela Granic, Yasaman Hashemian, Marientina Gotsis
OBJECTIVE: The current study assessed the feasibility and effectiveness of a full-body-driven intervention videogame targeted at decreasing attention deficit hyperactivity disorder (ADHD) symptoms, specifically inattention, hyperactivity, impulsivity, and motor deficiency. MATERIALS AND METHODS: The game was tested in a Dutch sample (N = 73) of school-aged children with elevated ADHD symptoms. Children assigned to the intervention condition played "Adventurous Dreaming Highflying Dragon," and those in the control condition played a comparable full-body-driven game without ADHD-focused training components...
August 2016: Games for Health
Assaf Berger, Michael Findler, Dror Maymon, Tzfanya Korach, Oshrat Fono Yativ, Yoav Gronovich, Ayal Hassidim
Color vision deficiency has been associated with educational difficulties among male children, as well as attention-deficit hyperactivity disorder (ADHD). We examined the association of color vision deficiency with functional conditions, including ADHD, irritable bowel syndrome, enuresis and somatoform disorders, in a large population of male adolescents. We included all Israeli male adolescents that underwent medical and cognitive examinations during conscription between the years 2007 and 2013. The prevalence of ADHD, irritable bowel syndrome, enuresis, and somatoform disorders among color vision deficiency patients was compared to a control group...
September 2016: Journal of Child Neurology
Clare Northover, Anita Thapar, Kate Langley, Graeme Fairchild, Stephanie H M van Goozen
Reported findings on cortisol reactivity to stress in young people with ADHD are very variable. This inconsistency may be explained by high rates of comorbidity with Conduct Disorder (CD). The present study examined cortisol responses to a psychosocial stressor in a large sample of adolescent males with ADHD (n=202), with or without a comorbid diagnosis of Conduct Disorder (CD). Associations between stress reactivity and callous-unemotional traits and internalizing symptoms were also assessed. The ADHD only (n=95) and ADHD+CD (n=107) groups did not differ in baseline cortisol, but the ADHD+CD group showed significantly reduced cortisol stress reactivity relative to the ADHD only group...
August 30, 2016: Psychiatry Research
Laura LaChance, Kwame McKenzie, Valerie H Taylor, Simone N Vigod
OBJECTIVE: Omega-3 and omega-6 fatty acids have been shown to be deficient in individuals with attention deficit/hyperactivity disorder compared to controls (Hawkey & Nigg, 2014). Clinical trials of omega-3 and omega-6 supplements as treatment for ADHD have demonstrated minimal efficacy (Bloch & Qawasmi, 2011; Gillies, Sinn, Lad, Leach, & Ross, 2011; Hawkey & Nigg, 2014; Puri & Martins, 2014; Sonuga-Barke et al., 2013). Existing trials have analyzed omega-3 and omega-6 separately although the tissue ratio of these fatty acids (n6/n3) may be more important than absolute levels of either...
2016: Journal of the Canadian Academy of Child and Adolescent Psychiatry
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