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https://www.readbyqxmd.com/read/28723946/the-mitochondrial-genome-of-the-terrestrial-carnivorous-plant-utricularia-reniformis-lentibulariaceae-structure-comparative-analysis-and-evolutionary-landmarks
#1
Saura R Silva, Danillo O Alvarenga, Yani Aranguren, Helen A Penha, Camila C Fernandes, Daniel G Pinheiro, Marcos T Oliveira, Todd P Michael, Vitor F O Miranda, Alessandro M Varani
The carnivorous plants of the family Lentibulariaceae have attained recent attention not only because of their interesting lifestyle, but also because of their dynamic nuclear genome size. Lentibulariaceae genomes span an order of magnitude and include species with the smallest genomes in angiosperms, making them a powerful system to study the mechanisms of genome expansion and contraction. However, little is known about mitochondrial DNA (mtDNA) sequences of this family, and the evolutionary forces that shape this organellar genome...
2017: PloS One
https://www.readbyqxmd.com/read/28717207/barcoding-utility-in-a-mega-diverse-cross-continental-genus-keeping-pace-with-cyrtodactylus-geckos
#2
Ian G Brennan, Aaron M Bauer, Ngo Van Tri, Yun-Yu Wang, Wen-Zhi Wang, Ya-Ping Zhang, Robert W Murphy
Over the past decade, DNA barcoding has become a staple of low-cost molecular systematic investigations. The availability of universal primers and subsidized sequencing projects (PolarBOL, SharkBOL, SpongeBOL) have driven this popularity, often without appropriate investigation into the utility of barcoding data for the taxonomic group of interest. Here, our primary aim is to determine the phylogenetic value of DNA barcoding (mitochondrial locus COI) within the gecko genus Cyrtodactylus. With >40 new species described since last systematic investigation, Cyrtodactylus represents one of the most diverse extant squamate genera, and their contemporary distribution spans the Indian subcontinent, eastward through Indochina, and into AustraloPapua...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28714195/research-review-the-role-of-obstetric-and-neonatal-complications-in-childhood-attention-deficit-and-hyperactivity-disorder-a-systematic-review
#3
Marta Serati, Jennifer L Barkin, Giulia Orsenigo, Alfredo Carlo Altamura, Massimiliano Buoli
BACKGROUND: Attention deficit and hyperactivity disorder (ADHD) is a developmental disorder characterized by an inability to sustain attention, activity levels and impulse control, and, according to the latest studies, the prevalence is about 8% and in some countries less than 1%. Currently, it is well-known that complications during the perinatal period have significant implications on child's physical and mental health. Purpose of the present paper is to review the literature about the association between perinatal complications and future risk of an ADHD diagnosis...
July 17, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
https://www.readbyqxmd.com/read/28713461/the-effects-of-maximal-intensity-exercise-on-cognitive-performance-in-children
#4
Roy David Samuel, Ofir Zavdy, Miriam Levav, Ronen Reuveny, Uriel Katz, Gal Dubnov-Raz
High intensity physical exercise has previously been found to lead to a decline in cognitive performance of adults. The aim of this study was to determine the effects of maximal intensity exercise on cognitive performance of children. Using a repeated-measures design, 20 children and adolescents aged 8-17 years completed a battery of tests measuring memory and attention. Forward and Backward Digit Span tests, the Rey Auditory-Verbal Learning Test (RAVLT) and the Digit Symbol Substitution Test (DSST) were performed at baseline, immediately after, and one hour after a maximal cardiopulmonary exercise test...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28710519/validation-of-the-human-odor-span-task-effects-of-nicotine
#5
David A MacQueen, David J Drobes
RATIONALE: Amongst non-smokers, nicotine generally enhances performance on tasks of attention, with limited effect on working memory. In contrast, nicotine has been shown to produce robust enhancements of working memory in non-humans. OBJECTIVES: To address this gap, the present study investigated the effects of nicotine on the performance of non-smokers on a cognitive battery which included a working memory task reverse-translated from use with rodents (the odor span task, OST)...
July 14, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28710237/focal-neurological-presentation-in-hashimoto-s-encephalopathy-mimicking-a-vascular-occlusion-of-the-middle-cerebral-artery
#6
Ahmad Alazzeh, Sarah Jaroudi, Matthew Gooch, Alan N Peiris
Hashimoto's encephalopathy is a rare form of autoimmune encephalopathy. It is likely an underdiagnosed entity especially in the setting of focal neurological defects. We report a case of a 49-year-old man who presented with "strange behavior"of a day's duration. Examination was significant only for lethargy, poor attention span and agitation. Routine labs revealed leucocytosis. Head CT scan was unremarkable. Lumbar puncture showed high white blood cells with lymphocytosis and elevated protein level. The patient was empirically treated for meningitis without improvement...
July 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28708830/speech-in-speech-perception-and-executive-function-involvement
#7
Marcela Perrone-Bertolotti, Maxime Tassin, Fanny Meunier
This present study investigated the link between speech-in-speech perception capacities and four executive function components: response suppression, inhibitory control, switching and working memory. We constructed a cross-modal semantic priming paradigm using a written target word and a spoken prime word, implemented in one of two concurrent auditory sentences (cocktail party situation). The prime and target were semantically related or unrelated. Participants had to perform a lexical decision task on visual target words and simultaneously listen to only one of two pronounced sentences...
2017: PloS One
https://www.readbyqxmd.com/read/28708762/cognitive-load-selectively-influences-the-interruptive-effect-of-pain-on-attention
#8
David J Moore, Christopher Eccleston, Edmund Keogh
Pain is known to interrupt attentional performance. Such interference effects seem to occur preferentially for tasks that are complex and/or difficult. However, few studies have directly manipulated memory load in the context of pain interference to test this view. Therefore, the present study examines the effect of experimental manipulations of both memory load and pain on three tasks previously found to be sensitive to pain interference. Three experiments were conducted. A different task was examined in each experiment, each comprising of a high and low cognitive load versions of the task...
July 11, 2017: Pain
https://www.readbyqxmd.com/read/28704894/factors-affecting-sentence-in-noise-recognition-for-normal-hearing-listeners-and-listeners-with-hearing-loss
#9
Jung Sun Hwang, Kyung Hyun Kim, Jae Hee Lee
BACKGROUND AND OBJECTIVES: Despite amplified speech, listeners with hearing loss often report more difficulties understanding speech in background noise compared to normalhearing listeners. Various factors such as deteriorated hearing sensitivity, age, suprathreshold temporal resolution, and reduced capacity of working memory and attention can attribute to their sentence-in-noise problems. The present study aims to determine a primary explanatory factor for sentence-in-noise recognition difficulties in adults with or without hearing loss...
July 2017: Journal of Audiology & Otology
https://www.readbyqxmd.com/read/28704632/measuring-memory-and-attention-to-preview-in-motion
#10
Richard J Jagacinski, Gordon M Hammond, Emanuele Rizzi
Objective Use perceptual-motor responses to perturbations to reveal the spatio-temporal detail of memory for the recent past and attention to preview when participants track a winding roadway. Background Memory of the recently passed roadway can be inferred from feedback control models of the participants' manual movement patterns. Similarly, attention to preview of the upcoming roadway can be inferred from feedforward control models of manual movement patterns. Method Perturbation techniques were used to measure these memory and attention functions...
August 2017: Human Factors
https://www.readbyqxmd.com/read/28692449/fidget-spinners-purported-benefits-adverse-effects-and-accepted-alternatives
#11
Rachel A Schecter, Jay Shah, Kate Fruitman, Ruth Lynn Milanaik
PURPOSE OF REVIEW: In the span of a few months, fidget spinners have caught the eyes of millions of children, parents, educators and paediatricians. Fidget spinners, hand-held toys designed to spin freely in your grasp, have become a source of entertainment for consumers of all ages. Despite a lack of scientific evidence, toy marketers have advertised the benefits of fidget spinners for children with attention-deficit/hyperactivity disorder and other disorders (e.g. autism, anxiety, sensory issues)...
July 7, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28680681/terahertz-time-domain-spectroscopy-of-edible-oils
#12
Alex Dinovitser, Dimitar G Valchev, Derek Abbott
Chemical degradation of edible oils has been studied using conventional spectroscopic methods spanning the spectrum from ultraviolet to mid-IR. However, the possibility of morphological changes of oil molecules that can be detected at terahertz frequencies is beginning to receive some attention. Furthermore, the rapidly decreasing cost of this technology and its capability for convenient, in situ measurement of material properties, raises the possibility of monitoring oil during cooking and processing at production facilities, and more generally within the food industry...
June 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28676771/differences-in-executive-functioning-in-children-with-attention-deficit-and-hyperactivity-disorder-adhd
#13
M Rosa Elosúa, Sandra Del Olmo, María José Contreras
In recent years, the interest in Attention Deficit and Hyperactivity Disorder (ADHD) and its relation to deficits in working memory (WM) and more specifically the different executive functions (EFs) has grown, to the point of confirming that these are quite frequent in this disorder. The aim of this study was precisely to explore differences in executive functioning of WM in fourth grade Primary school children with and without ADHD (26 and 29 children, respectively), introducing rigorous control measures in the tests used...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28669314/understanding-heterogeneity-in-older-adults-latent-growth-curve-modeling-of-cognitive-functioning
#14
Rebecca K MacAulay, Matthew R Calamia, Alex S Cohen, Katrina Daigle, Heather Foil, Robert Brouillette, Annadora J Bruce-Keller, Jeffrey N Keller
BACKGROUND: Clarifying relationships between specific neurocognitive functions in cognitively intact older adults can improve our understanding of mechanisms involved in cognitive decline, which may allow identification of new opportunities for intervention and earlier detection of those at increased risk of dementia. METHOD: The present study employed latent growth curve modeling to longitudinally examine the relationship between executive attention/processing speed, episodic memory, language, and working memory functioning utilizing the neuropsychological test battery from the National Alzheimer's Disease Coordinating Center...
July 1, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28659750/development-of-performance-and-erps-in-a-flanker-task-in-children-and-adolescents-with-tourette-syndrome-a-follow-up-study
#15
Heike Eichele, Tom Eichele, Lynn Marquardt, Steinunn Adolfsdottir, Kenneth Hugdahl, Lin Sørensen, Kerstin J Plessen
Background: Tourette Syndrome (TS) is a neurodevelopmental disorder with childhood-onset, with a typical decline in tic severity, as well as an increasing ability to suppress tics in late childhood and adolescence. These processes develop in parallel with general improvement of self-regulatory abilities, and performance monitoring during this age-span. Hence, changes in performance monitoring over time might provide insight into the regulation of tics in children and adolescents with TS. Method: We measured reaction time, reaction time variability, accuracy, and event-related potentials (ERP) in 17 children with TS, including 10 children with comorbid Attention-Deficit/Hyperactivity Disorder (ADHD), 24 children with ADHD, and 29 typically developing children, using a modified Eriksen Flanker task in two testing sessions administered on average 4...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28659161/associations-between-cerebral-amyloid-and-changes-in-cognitive-function-and-falls-risk-in-subcortical-ischemic-vascular-cognitive-impairment
#16
Elizabeth Dao, John R Best, Ging-Yuek Robin Hsiung, Vesna Sossi, Claudia Jacova, Roger Tam, Teresa Liu-Ambrose
BACKGROUND: To determine the association between amyloid-beta (Aβ) plaque deposition and changes in global cognition, executive functions, information processing speed, and falls risk over a 12-month period in older adults with a primary clinical diagnosis of subcortical ischemic vascular cognitive impairment (SIVCI). METHODS: This is a secondary analysis of data acquired from a subset of participants (N = 22) who were enrolled in a randomized controlled trial of aerobic exercise (NCT01027858)...
June 28, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/28648826/attentional-modulation-of-neuronal-activity-depends-on-neuronal-feature-selectivity
#17
Jacqueline R Hembrook-Short, Vanessa L Mock, Farran Briggs
Attention exerts a powerful influence on visual perception. The impact of attention on neuronal activity manifests at early visual information processing stages and progressively increases throughout the visual cortical hierarchy. However, the neuronal mechanisms of attention are unresolved. In particular, the rules governing attentional modulation of individual neurons, whether they are facilitated by or suppressed by attention, are not known. To obtain a more granular or neuron- and circuit-level understanding of the mechanisms of attention and to directly test the feature similarity gain model in V1, we compared attentional modulation with neuronal feature selectivity across a large population of V1 neurons in alert and behaving macaque monkeys trained on an attention-demanding contrast-change detection task...
July 10, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28645979/the-2015-middle-childhood-survey-mcs-of-mental-health-and-well-being-at-age-11-years-in-an-australian-population-cohort
#18
Kristin R Laurens, Stacy Tzoumakis, Kimberlie Dean, Sally A Brinkman, Miles Bore, Rhoshel K Lenroot, Maxwell Smith, Allyson Holbrook, Kim M Robinson, Robert Stevens, Felicity Harris, Vaughan J Carr, Melissa J Green
PURPOSE: The Middle Childhood Survey (MCS) was designed as a computerised self-report assessment of children's mental health and well-being at approximately 11 years of age, conducted with a population cohort of 87 026 children being studied longitudinally within the New South Wales (NSW) Child Development Study. PARTICIPANTS: School Principals provided written consent for teachers to administer the MCS in class to year 6 students at 829 NSW schools (35.0% of eligible schools)...
June 23, 2017: BMJ Open
https://www.readbyqxmd.com/read/28638329/the-contribution-of-cognitive-factors-to-individual-differences-in-understanding-noise-vocoded-speech-in-young-and-older-adults
#19
Stephanie Rosemann, Carsten Gießing, Jale Özyurt, Rebecca Carroll, Sebastian Puschmann, Christiane M Thiel
Noise-vocoded speech is commonly used to simulate the sensation after cochlear implantation as it consists of spectrally degraded speech. High individual variability exists in learning to understand both noise-vocoded speech and speech perceived through a cochlear implant (CI). This variability is partly ascribed to differing cognitive abilities like working memory, verbal skills or attention. Although clinically highly relevant, up to now, no consensus has been achieved about which cognitive factors exactly predict the intelligibility of speech in noise-vocoded situations in healthy subjects or in patients after cochlear implantation...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28632427/speed-of-processing-and-executive-functions-in-adults-with-phenylketonuria-quick-in-finding-the-word-but-not-the-ladybird
#20
Cristina Romani, Anita MacDonald, Sara De Felice, Liana Palermo
A reduction in processing speed is widely reported in phenylketonuria (PKU), possibly due to white matter pathology. We investigated possible deficits and their relationships with executive functions in a sample of 37 early-treated adults with PKU (AwPKUs). AwPKUs were not characterized by a generalized speed deficit, but instead their performance could be explained by two more specific impairments: (a) a deficit in the allocation of visuo-spatial attention that reduced speed in visual search tasks, in some reading conditions and visuo-motor coordination tasks; and (b) a more conservative decision mechanism that slowed down returning an answer across domains...
June 20, 2017: Cognitive Neuropsychology
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