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https://www.readbyqxmd.com/read/28437128/neural-dynamics-of-grouping-and-segmentation-explain-properties-of-visual-crowding
#1
Gregory Francis, Mauro Manassi, Michael H Herzog
Investigations of visual crowding, where a target is difficult to identify because of flanking elements, has largely used a theoretical perspective based on local interactions where flanking elements pool with or substitute for properties of the target. This successful theoretical approach has motivated a wide variety of empirical investigations to identify mechanisms that cause crowding, and it has suggested practical applications to mitigate crowding effects. However, this theoretical approach has been unable to account for a parallel set of findings that crowding is influenced by long-range perceptual grouping effects...
April 24, 2017: Psychological Review
https://www.readbyqxmd.com/read/28436757/bilingualism-and-age-are-continuous-variables-that-influence-executive-function
#2
Sara Incera, Conor T McLennan
We analyzed the effects of bilingualism and age on executive function. We examined these variables along a continuum, as opposed to dichotomizing them. We investigated the impact that bilingualism and age have on two measures of executive control (Stroop and Flanker). The mouse-tracking paradigm allowed us to examine the continuous dynamics of the responses as participants completed each trial. First, we found that the Stroop effect was reduced with younger age and higher levels of bilingualism; however, no Bilingualism by Age interaction emerged...
April 24, 2017: Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition
https://www.readbyqxmd.com/read/28432077/aerobic-exercise-promotes-executive-functions-and-impacts-functional-neural-activity-among-older-adults-with-vascular-cognitive-impairment
#3
Chun Liang Hsu, John R Best, Jennifer C Davis, Lindsay S Nagamatsu, Shirley Wang, Lara A Boyd, Gy Robin Hsiung, Michelle W Voss, Janice Jennifer Eng, Teresa Liu-Ambrose
BACKGROUND: Vascular cognitive impairment (VCI) results from cerebrovascular disease, and worldwide, it is the second most common type of cognitive dysfunction. While targeted aerobic training is a promising approach to delay the progression of VCI by reducing cardiometabolic risk factors, few randomised controlled trials to date have specifically assessed the efficacy of aerobic training on cognitive and brain outcomes in this group at risk for functional decline. AIM: To examine the effect of moderate-intensity aerobic training on executive functions and functional neural activity among older adults with mild subcortical ischaemic VCI (SIVCI)...
April 21, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28424644/the-association-between-parenting-behavior-and-executive-functioning-in-children-and-young-adolescents
#4
Zrinka Sosic-Vasic, Julia Kröner, Sibylle Schneider, Nenad Vasic, Manfred Spitzer, Judith Streb
Executive functioning (EF) is associated with various aspects of school achievement and cognitive development in children and adolescents. There has been substantial research investigating associations between EF and other factors in young children, such as support processes and parenting, but less research has been conducted about external factors relating to EF in older children and adolescents. Therefore, the present study investigates one possible factor that could correlate with EF in school-age children and adolescents: parenting behavior...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28413898/erp-correlates-of-attentional-processing-in-spider-fear-evidence-of-threat-specific-hypervigilance
#5
Rebecca Venetacci, Amber Johnstone, Kenneth C Kirkby, Allison Matthews
Attentional bias towards threat can be demonstrated by enhanced processing of threat-related targets and/or greater interference when threat-related distractors are present. These effects are argued to reflect processing within the orienting and executive control networks of the brain respectively. This study investigated behavioural (RT) and electrophysiological correlates of early selective attention and top-down attentional control among females with high (n = 16) or low (n = 16) spider fear (Mean age = 22 years)...
April 17, 2017: Cognition & Emotion
https://www.readbyqxmd.com/read/28410524/cognitive-control-in-young-heavy-drinkers-an-erp-study
#6
Ingmar H A Franken, Maartje Luijten, Frederik M van der Veen, Jan W van Strien
Substance use disorders have been frequently linked to an impaired cognitive control system. Whether this impaired control is also present in young adults who heavily drink alcohol is still subject to debate. The present study investigated possible impairments in cognitive control in heavy drinkers using behavioral and electrophysiological (EEG) measures. We studied behavioral performance on an inhibitory control and an error-processing task, using a GoNogo task and an Eriksen Flanker task respectively, while ERPs (Nogo-N2/P3 and ERN/Pe) were measured in a group of heavy alcohol drinkers (n=48) and a healthy control group of light drinkers (n=49)...
March 28, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28410395/the-role-of-temporal-predictability-for-early-attentional-adjustments-after-conflict
#7
Klaas Bombeke, Zachary D Langford, Wim Notebaert, C Nico Boehler
A frequently-studied phenomenon in cognitive-control research is conflict adaptation, or the finding that congruency effects are smaller after incongruent trials. Prominent cognitive control accounts suggest that this adaptation effect can be explained by transient conflict-induced modulations of selective attention, reducing congruency effects on the next trial. In the present study, we investigated these possible attentional modulations in four experiments using the Stroop and Flanker tasks, dissociating possible enhancements of task-relevant information from suppression of task-irrelevant information by varying when this information was presented...
2017: PloS One
https://www.readbyqxmd.com/read/28406685/individual-differences-in-working-memory-capacity-predict-learned-control-over-attentional-capture
#8
Matthew K Robison, Nash Unsworth
Although individual differences in working memory capacity (WMC) typically predict susceptibility to attentional capture in various paradigms (e.g., Stroop, antisaccade, flankers), it sometimes fails to correlate with the magnitude of attentional capture effects in visual search (e.g., Stokes, 2016), which is 1 of the most frequently studied tasks to study capture (Theeuwes, 2010). But some studies have shown that search modes can mitigate the effects of attentional capture (Leber & Egeth, 2006). Therefore, the present study examined whether or not the relationship between WMC and attentional capture changes as a function of the search modes available...
April 13, 2017: Journal of Experimental Psychology. Human Perception and Performance
https://www.readbyqxmd.com/read/28402866/a-randomized-trial-of-aerobic-exercise-on-cognitive-control-in-major-depression
#9
Ryan L Olson, Christopher J Brush, Peter J Ehmann, Brandon L Alderman
OBJECTIVE: The aim of this study was to examine the effects of an 8-week moderate-intensity aerobic exercise training intervention on cognitive control in individuals with major depressive disorder (MDD). METHODS: Participants with a current diagnosis of MDD (n=30; 21.1±2.0years) were stratified by depressive symptoms and randomized to an 8-week intervention of aerobic exercise (AE) or placebo exercise (PE). AE consisted of three sessions/week of moderate-intensity exercise training while PE consisted of three sessions/week of light-intensity stretching...
February 20, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28396415/variations-in-crowding-saccadic-precision-and-spatial-localization-reveal-the-shared-topology-of-spatial-vision
#10
John A Greenwood, Martin Szinte, Bilge Sayim, Patrick Cavanagh
Visual sensitivity varies across the visual field in several characteristic ways. For example, sensitivity declines sharply in peripheral (vs. foveal) vision and is typically worse in the upper (vs. lower) visual field. These variations can affect processes ranging from acuity and crowding (the deleterious effect of clutter on object recognition) to the precision of saccadic eye movements. Here we examine whether these variations can be attributed to a common source within the visual system. We first compared the size of crowding zones with the precision of saccades using an oriented clock target and two adjacent flanker elements...
April 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28386881/object-substitution-masking-and-its-relationship-with-visual-crowding
#11
Sarah Jayne Camp, Michael Pilling, Angus Gellatly
Object substitution masking (OSM) occurs when the perceptibility of a brief target is reduced by a trailing surround mask typically composed of four dots. Camp et al. (Journal of Experimental Psychology: Human Perception and Performance, 41, 940-957, 2015) found that crowding a target by adding adjacent flankers, in addition to OSM, had a more deleterious effect on performance than expected based on the combined individual effects of crowding and masking alone. The current experiments test why OSM and crowding interact in this way...
April 6, 2017: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28386420/interaction-between-stimulus-contrast-and-pre-saccadic-crowding
#12
Mehmet N Agaoglu, Susana T L Chung
Objects that are briefly flashed around the time of saccades are mislocalized. Previously, robust interactions between saccadic perceptual distortions and stimulus contrast have been reported. It is also known that crowding depends on the contrast of the target and flankers. Here, we investigated how stimulus contrast and crowding interact with pre-saccadic perception. We asked observers to report the orientation of a tilted Gabor presented in the periphery, with or without four flanking vertically oriented Gabors...
February 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28376344/differential-effects-of-phasic-and-tonic-alerting-on-the-efficiency-of-executive-attention
#13
Dariusz Asanowicz, Anna Marzecová
The study examined how alerting and executive attention interact in a task involving conflict resolution. We proposed a tentative scenario in which an initial exogenous phasic alerting phase is followed by an endogenous tonic alerting phase, and hypothesized that these two processes may have distinct effects on conflict resolution. Phasic alerting was expected to increase the conflict, whereas tonic alerting was expected to decrease the conflict. Three experiments were conducted using different variants of the flanker task with visual alerting cues and varied cue-target intervals (SOA), to differentiate between effects of phasic alerting (short SOA) and tonic alerting (long SOA)...
April 1, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28374659/modulation-of-error-monitoring-in-obsessive-compulsive-disorder-by-individually-tailored-symptom-provocation
#14
D Roh, J-G Chang, S W Yoo, J Shin, C-H Kim
BACKGROUND: The enhanced error monitoring in patients with obsessive-compulsive disorder (OCD), typically measured with the error-related negativity (ERN), has been found to be temporally stable and independent of symptom expression. Here, we examined whether the error monitoring in patients with OCD could be experimentally modulated by individually tailored symptom provocation. METHOD: Twenty patients with OCD and 20 healthy controls performed a flanker task in which OCD-relevant or neutral pictures were presented prior to a flanker stimulus...
April 4, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28371553/measuring-executive-function-in-indian-mothers-and-their-4-year-old-daughters
#15
Antje von Suchodoletz, Pauline L Slot, Delshad M Shroff
Executive function (EF), including cognitive flexibility, attention shifting, and inhibitory control, has been linked to a range of outcomes across the lifespan, such as school readiness and academic functioning, job performance, health, and social-emotional well-being. Yet, research investigating links between parent EF and child EF is still limited. This is partly due to challenges in measuring the same EF abilities in parents and their children. The current study investigated the applicability of a computer-based battery of various EF tasks for use with both mothers and children...
March 2017: PsyCh Journal
https://www.readbyqxmd.com/read/28369458/the-healthy-brain-network-serial-scanning-initiative-a-resource-for-evaluating-inter-individual-differences-and-their-reliabilities-across-scan-conditions-and-sessions
#16
David O'Connor, Natan Vega Potler, Meagan Kovacs, Ting Xu, Lei Ai, John Pellman, Tamara Vanderwal, Lucas C Parra, Samantha Cohen, Satrajit Ghosh, Jasmine Escalera, Natalie Grant-Villegas, Yael Osman, Anastasia Bui, R Cameron Craddock, Michael P Milham
Background: Although typically measured during the resting state, a growing literature is illustrating the ability to map intrinsic connectivity with functional MRI during task and naturalistic viewing conditions. These paradigms are drawing excitement due to their greater tolerability in clinical and developing populations and because they enable a wider range of analyses (e.g., inter-subject correlations). To be clinically useful, the test-retest reliability of connectivity measured during these paradigms needs to be established...
February 1, 2017: GigaScience
https://www.readbyqxmd.com/read/28368156/-strategic-control-over-extent-and-timing-of-distractor-based-response-activation-correction-to-jost-et-al-2017
#17
(no author information available yet)
Reports an error in "Strategic control over extent and timing of distractor-based response activation" by Kerstin Jost, Mike Wendt, Aquiles Luna-Rodriguez, Andreas Löw and Thomas Jacobsen (Journal of Experimental Psychology: Learning, Memory, and Cognition, 2017[Feb], Vol 43[2], 326-333). In the article, the images to Figures 2 and 3 were switched during production. The online version of this article has been corrected. (The following abstract of the original article appeared in record 2016-48458-001.) In choice reaction time (RT) tasks, performance is often influenced by the presence of nominally irrelevant stimuli, referred to as distractors...
April 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
https://www.readbyqxmd.com/read/28364127/-two-level-measurements-of-processing-speed-as-cognitive-markers-in-the-differential-diagnosis-of-dsm-5-mild-neurocognitive-disorders-ncd
#18
Hanna Lu, Sandra S M Chan, Linda C W Lam
Processing speed is an updated diagnostic factor for neurocognitive disorders (NCD) in DSM-5. This study investigated the characteristics of processing speed and their diagnostic values in NCD patients. A flanker test was conducted in 31 adults with NCD due to vascular disease (NCD-vascular), 36 patients with NCD due to Alzheimer's disease (NCD-AD), and 137 healthy controls. The processing speed was evaluated using two measurements: mean reaction time (RT) and intra-individual variability of RT. Mean RT represents the global processing speed...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28342397/conflict-adaptation-in-positive-and-negative-mood-applying-a-success-failure-manipulation
#19
Stefanie Schuch, Jana Zweerings, Patricia Hirsch, Iring Koch
Conflict adaptation is a cognitive mechanism denoting increased cognitive control upon detection of conflict. This mechanism can be measured by the congruency sequence effect, indicating the reduction of congruency effects after incongruent trials (where response conflict occurs) relative to congruent trials (without response conflict). Several studies have reported increased conflict adaptation under negative, as compared to positive, mood. In these studies, sustained mood states were induced by film clips or music combined with imagination techniques; these kinds of mood manipulations are highly obvious, possibly distorting the actual mood states experienced by the participants...
March 22, 2017: Acta Psychologica
https://www.readbyqxmd.com/read/28340050/naps-enhance-executive-attention-in-preschool-aged-children
#20
Amanda Cremone, Jennifer M McDermott, Rebecca M C Spencer
Executive attention is impaired following sleep loss in school-aged children, adolescents, and adults. Whether naps improve attention relative to nap deprivation in preschool-aged children is unknown. The aim of this study was to compare executive attention in preschool children following a nap and an interval of wake.  Sixty-nine children, 35-70 months of age, completed a Flanker task to assess executive attention following a nap and an equivalent interval of wake.  Overall, accuracy was greater after the nap compared with the wake interval...
March 13, 2017: Journal of Pediatric Psychology
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