Flanker Task Research Articles

A comment on the Revised Diffusion Model for Conflict tasks (RDMC).

In conflict tasks, such as the Simon, Eriksen flanker, or Stroop task, a relevant and an irrelevant feature indicate the same or different responses in congruent and incongruent trials, respectively. The congruency effect refers to faster and less error-prone responses in congruent relative to incongruent trials. Distributional analyses reveal that the congruency effect in the Simon task becomes smaller with increasing RTs, reflected by a negative-going delta function. In contrast, for other tasks, the delta function is typically positive-going, meaning that congruency effects become larger with increasing RTs. The Diffusion Model for Conflict tasks (DMC; Ulrich et al., Cognitive Psychology, 78, 148-174, 2015) accounts for this by explicitly modeling the information accumulated from the relevant and the irrelevant features and attributes negatively- versus positively-sloped delta functions to different peak times of a pulse-like activation resulting from the task-irrelevant feature. Because the underlying function implies negative drift rates, Lee and Sewell (Psychonomic Bulletin & Review, 31(5), 1-31, 2024) recently questioned this assumption and suggested their Revised Diffusion Model for Conflict tasks (RDMC). We address three issues regarding RDMC compared to DMC: (1) The pulse-like function is not as implausible as Lee and Sewell suggest. (2) RDMC itself comes with a questionable assumption that different parameters are required for congruent and incongruent trials. (3) Moreover, we present data from a new parameter recovery study, suggesting that RDMC lacks acceptable recovery of several parameters (in particular compared to DMC). In this light, we discuss RDMC as not (yet) a revised version of DMC.

Psychometrics of drift-diffusion model parameters derived from the Eriksen flanker task: Reliability and validity in two independent samples.

The flanker task is a widely used measure of cognitive control abilities. Drift-diffusion modeling of flanker task behavior can yield separable parameters of cognitive control-related subprocesses, but the parameters' psychometrics are not well-established. We examined the reliability and validity of four behavioral measures: (1) raw accuracy, (2) reaction time (RT) interference, (3) NIH Toolbox flanker score, and (4) two drift-diffusion model (DDM) parameters-drift rate and boundary separation-capturing evidence accumulation efficiency and speed-accuracy trade-off, respectively. Participants from two independent studies - one cross-sectional (N = 381) and one with three timepoints (N = 83) - completed the flanker task while electroencephalography data were collected. Across both studies, drift rate and boundary separation demonstrated comparable split-half and test-retest reliability to accuracy, RT interference, and NIH Toolbox flanker score, but better incremental convergent validity with psychophysiological measures (i.e., the error-related negativity; ERN) and neuropsychological measures of cognitive control than the other behavioral indices. Greater drift rate (i.e., faster and more accurate responses) to congruent and incongruent stimuli, and smaller boundary separation to incongruent stimuli were related to 1) larger ERN amplitudes (in both studies) and 2) faster and more accurate inhibition and set-shifting over and above raw accuracy, reaction time, and NIH Toolbox flanker scores (in Study 1). Computational models, such as DDM, can parse behavioral performance into subprocesses that exhibit comparable reliability to other scoring approaches, but more meaningful relationships with other measures of cognitive control. The application of these computational models may be applied to existing data and enhance the identification of cognitive control deficits in psychiatric disorders.

The Effect of 6 weeks Physical Activity on Cognitive Control and Trait Impulsivity in Multi-problem Young Adults: First Findings of an RCT-study.

This study aimed to report the effect of a 6-week light-active versus moderate-active physical activity intervention embedded in a multimodal day treatment program on selected measures of cognitive control (i.e., response inhibition, error processing, and cognitive interference) and trait impulsivity. A randomized controlled design was implemented, including male multi-problem young adults (aged 18-27) assigned to either light-active (N = 12) or moderate-active physical activity lessons (N = 11). A repeated measures design was used to examine treatment effects between the two groups over time on response inhibition, error processing, and cognitive interference (measured respectively with a Go/NoGo task, a Flanker task, and the Stroop) and trait impulsivity (measured with the Dutch Baratt Impulsiveness Scale). Cognitive control, but not trait impulsivity, improved over time. Specifically, enhancements in inhibition and reduced cognitive interference were observed after 6 weeks. Error processing did not improve, but we did observe improved performance on an error-processing task. No interaction with physical activity intensity was found, suggesting similar treatment effects regardless of intensity. Results should be interpreted with caution due to several limitations, including the small sample size. Overall, due to current limitations (i.e., physical activity embedded in a larger treatment program, small sample size at follow-up, and low intervention adherence), it is not possible to draw any definite conclusions. However, the current findings contribute to a growing body of evidence suggesting potential benefits of physical activity (embedded in a multi-modal day treatment program) in the enhancement of cognitive control deficits in at-risk populations, independent of exercise intensity.

Attention focused on memory: The episodic flanker effect with letters, words, colors, and pictures.

We report 10 experiments exploring the proposition that memory retrieval is perceptual attention turned inward. The experiments adapt the Eriksen and Eriksen perceptual flanker effect to a memory task in which subjects must decide whether a cued item in a probe display appeared in the same position in a memory list. Previous research with this episodic flanker task found distance and compatibility effects like those in the perceptual flanker task, suggesting that the same attentional spotlight is turned inward in memory retrieval. The previous experiments used lists of six consonants. The experiments reported here were designed to generalize the results to a broader range of conditions, from letters to words, colors, and pictures, and from set size 6 to set sizes of 4 and 5. Experiments 1-4 varied distance and set size with lists of four, five, or six letters, words, colors, and pictures, respectively. The distance effect was observed with all materials and all set sizes. Experiments 5-8 varied compatibility by presenting context items in the probe that were either the same as the memory list (and therefore compatible with "yes" responses and incompatible with "no" responses) or different from the memory list (and therefore incompatible with "yes" responses and compatible with "no" responses). We found compatibility effects with all materials and all set sizes. These results support the proposition that memory retrieval is attention turned inward. Turned inward or outward, attention is a general process that applies the same computations to different kinds of materials.

Inefficient and unique processing of social–emotional interference in school-aged children with high-functioning autism spectrum disorder

IntroductionInterest is growing in investigating the ability of children with autism spectrum disorder (ASD) to process social information under conflicting and complex environments. However, few studies have employed objective behavioral measures to directly explore the underlying profile of social–emotional interference control.MethodsIn the current study, 53 children with ASD and 53 typically developing (TD) control, aged 6–12 years, completed a set of modified flanker tasks involving arrows, schematic faces, same real faces (with facial interference by the same person), and different real faces (with facial interference by different people), respectively. Response time in incongruent (RTInc) and congruent conditions (RTCon), percentage of errors in incongruent (%ErrorInc) and congruent conditions (%ErrorCon), and flanker effect calculated by ΔRT = (RTInc − RTCon)/RTCon and Δ%Error = %ErrorInc − %ErrorCon were used as outcome metrics.ResultsWe obtained three major results: (1) the ASD group had longer RTInc and RTCon compared to the TD group in the arrow, schematic face, and same real-face tasks; (2) compared with the performance in the arrow flanker task, both groups exhibited longer RTs and reduced ΔRTs in the same real-face task; however, in the schematic-face task, longer RT and reduced ΔRT were exhibited in the TD group, but not in the ASD group; and (3) in the different real-face task, ASD group had higher %Error than the TD group, and %Error was negatively correlated with RT only in the ASD group.ConclusionThe current study delineates the inefficient processing of social–emotional interference in school-aged children with ASD and further suggests that these children might adopt a relatively optimized strategy like symbolization when dealing with emotional conflict. However, such compensatory cognitive strategies may be exhausted along with the increase in information load. These findings provide new perspectives of considering the difference more than difficulty in the cognitive profile of ASD, which will benefit the development of targeted behavioral interventions.

Comparative effects of open-skill and closed-skill sports on executive function in university students: a 16-week quasi-experimental study.

Previous reviews have often concluded that open-skill sports are more effective at enhancing executive function (EF) than closed-skill sports. However, this conclusion may not hold for closed-skill sports with high cognitive demands, such as golf. This study aimed to compare the effects of football (open-skill) and golf (closed-skill) training on enhancing EF in university students. Using a quasi-experimental, pre-post test design, 63 male participants were assigned to three groups: football (n = 21), golf (n = 21), and a sedentary control group (n = 21). Over 16 weeks of training, the intervention groups engaged in four 90-min training sessions per week, while the control group attended one 80-min physical education class per week. Assessments were conducted before and after the intervention. EFs, including inhibition control and working memory, were assessed using the Flanker task and Corsi-block tapping task, respectively. Cardiovascular fitness (CRF) was measured by the multi-stage fitness test. The golf group showed significant improvements in inhibition control from pre- to post-intervention (p = 0.02, d = 0.26), while the football and control groups did not exhibit significant changes. Post-intervention comparisons indicated no significant differences in EF performance between the golf and football groups; however, both outperformed the control group (golf, p = 0.002, d = 0.99; football, p = 0.01, d = 0.67). No significant improvement was observed in working memory for any group. Additionally, changes in CRF were not significantly correlated with EF performance. This study provides preliminary evidence that golf, a closed-skill sport with high cognitive demands, can effectively improve inhibitory control after 16 weeks of training. This improvement is comparable to that observed in football, an open-skill sport. The findings also suggest that the cognitive demands of the sports, rather than improvements in physical fitness, may be primarily responsible for the enhancements in EF.

Together towards better executive functions? Effects of acute cognitively demanding physical activity and social interaction on inhibition

Background and aimsResearch has shown that acute physical activity (PA) improves inhibition performance. However, further information is needed on potential moderators that may influence this effect. Since social interaction (SoI) was proposed as an important PA characteristic influencing the PA-inhibition relation, this study examines the effects of acute PA and SoI on inhibition. MethodsIn a 2 × 2 within-subject design, 96 participants (17–26 years, M = 20.5; SD = 1.7, 50% female) underwent four experimental conditions, consisting of a cognitively challenging (exer-)game varying in PA (PA/no PA) and SoI (SoI/no SoI). After each condition, inhibition performance was assessed using the Eriksen Flanker Task. ResultsRepeated measures ANOVAs revealed that acute PA enhanced inhibition, leading to faster reaction times (ƞ2p = 0.169) and higher accuracy rates (ƞ2p = 0.090). However, the results showed speed-accuracy trade-offs for SoI, with faster reaction times (ƞ2p = 0.041) and lower accuracy rates (ƞ2p = 0.140). No interaction effects for PA and SoI on inhibition were observed (ƞ2ps = 0.005–0.036). ConclusionOur findings confirm that an acute bout of cognitively challenging PA can enhance inhibition performance but has no joint effects with SoI, which facilitated performance speed but worsened accuracy. Likely, the physically and cognitively challenging nature of the exergaming bout may have limited room for further improvement by SoI. Future acute PA studies should jointly explore the role of SoI and cognitive engagement in acute PA to identify an optimal pattern of task and context factors for reaping executive functions (EFs) gains.

Cognitively engaging exercise predicts executive functioning on laboratory tasks

The cognitive engagement hypothesis claims that regular exercise must be cognitively engaging in order to benefit executive functioning. However, the available evidence for this hypothesis is circumstantial. Here we test it directly in two studies. In Study 1, 145 young adults first reported the extent to which their primary exercise and non-exercise leisure activities were cognitively engaging. They then completed two well-known laboratory tasks measuring executive function: a flanker task to index inhibitory control and a backward digit span task to assess working memory. Structural equation modeling revealed that when participants reported that their exercise relied on inhibitory cognitive control, they performed better on the flanker task, and, when their exercise demanded cognitive flexibility, they performed better on a backward digit task. These relationships did not hold for their primary reported leisure activity. Study 2 confirmed this finding with an independent sample of 227 undergraduates and two different executive function tasks: a stop-signal task to index inhibitory control and a trail making B task to assess cognitive flexibility. When participants reported that their regular exercise relied on inhibitory control they had faster stop-signal reaction times and made fewer trail making errors, and, when their exercise relied on cognitive flexibility, they had slower stop-signal reaction times and longer trail making B completion times. These relationships were again not found for participants’ leisure activities. These findings support the claim that exercise is associated with cognitive performance on laboratory tasks, provided the exercise is itself cognitively demanding.

Exercise intensity of virtual reality exergaming modulates the responses to executive function and affective response in sedentary young adults: A randomized, controlled crossover feasibility study

Virtual reality (VR) exergaming is a novel strategy to encourage physical activity and boost emotional well-being. However, its effects on executive function (EF) are not fully understood. This study assessed the immediate and retention effects of immersive VR exergaming, at varying exercise intensities, on EF and affect among sedentary college students. Thirty participants (mean age = 22.2±2.5 years; 18 females) underwent 15-minute sessions of moderate-intensity (MI), high-intensity (HI), and active-control intensity (AC) VR exergaming in a counterbalanced order. EF was evaluated using the Flanker, Task-switching, and N-back tasks before, immediately after, and 30 minutes post-intervention. Emotional valence and arousal were measured by the Feeling Scale and Felt Arousal Scale, respectively. Inverse efficiency score (IES) results indicated that inhibitory control was higher following both MI and HI exergaming compared to AC (p < 0.05), with improvements sustained for 30 minutes. HI VR exergaming showed the greatest improvement (p = 0.048). Both HI and MI also exhibited higher working memory capacity than AC (p < 0.05), with HI performing better (p = 0.039). No significant differences in task-switching performance were observed among the groups (p > 0.05). Emotional valence and arousal were significantly elevated immediately after and sustained for 30 minutes following MI and HI exergaming (p < 0.05). This study demonstrates the cognitive and affective benefits of MI and HI VR exergaming in young adults, with HI VR exergaming showing longer-lasting improvements. These findings suggest that immersive VR exergaming can enhance both physical and cognitive health, potentially improving academic performance and daily functionality in collegiate populations.

Unveiling the neural mechanisms of acute aerobic exercise on inhibitory control among young adults with obesity: Insights from an ERP study

Obesity has become a prominent public health concern worldwide and is associated with adverse cognitive function. Exercise, particularly aerobic exercise, is known to benefit for weight loss and cognitive function. However, whether acute aerobic exercise could yield benefits to obese individuals and the precise brain mechanisms of action remain poorly understood. The study aimed to investigate whether acute aerobic exercise could improve inhibitory control among obese individuals and what neuroelectric mechanisms are implicated. A 3 (session: control, low-intensity exercise, moderate-intensity exercise) × 2 (congruency: congruent, incongruent) within-subject design was conducted. 18 obese young male adults underwent three sessions of 30-min interventions in a counterbalanced order seperated by five days: moderate-intensity aerobic exercise (MIE), low-intensity aerobic exercise (LIE) and a control session (a sedentary period of seated rest). The Flanker task and EEG recordings (N2 and P3 amplitude) were investigated following exercise and the control treatment. Results showed that the N2 amplitude following MIE was larger than the control session, whereas a larger N2 and reduced congruent P3 amplitude was observed following MIE than LIE. However, no main effect of the session was found for reaction time and accuracy, but a significant main effect of congruency was observed. These findings suggest acute moderate-intensity aerobic exercise may modulate brain activity through enhanced recruitment of attentional resources for cognitive control and conflict monitoring in adults with obesity.

Error monitoring under working memory load: Anelectrocortical investigation.

Error monitoring is essential for detecting errors and may facilitate behavioral adjustments that can reduce or prevent future errors. At times, error monitoring must occur while individuals are engaged in other, cognitively demanding tasks that might consume processing resources necessary for error monitoring. Here, we set out to determine whether concurrent working memory (WM) load interferes with error monitoring, as measured using event-related potentials, the error-related negativity (Ne/ERN), and error positivity (Pe). Fifty-four participants (n = 33 female) completed an arrowhead flanker task, with trials presented under low (2 letter) or high (6 letter) WM load. Participants were required to hold letter strings in memory and to recall these letters at the end of a set of flanker trials. Results showed that WM load reduced the Pe but did not affect the Ne/ERN. Therefore, WM load appeared to attenuate later, more elaborated stages of error processing, though initial error detection was unaffected. Additionally, high WM load slowed reaction times overall, but did not lead to a significant increase in errors. As such, slower responses may have helped participants maintain comparable accuracy for low-load versus high-load trials. Overall, results indicate that WM load interferes with the evaluation of error significance, which could interfere with behavioral adaptations over time.

Comparison of Virtual Reality Exergames and Nature Videos on Attentional Performance: A Single-Session Study.

This study aimed to investigate the acute effects of a single session of a VR exergame (Beat Saber) and a VR nature video (Ireland 4K) on attentional performance, using the Flanker and Attentional Blink (AB) tasks. The objective was to assess whether these VR interventions could enhance attentional control, as measured by improvements in response times and accuracy. A total of 39 psychology students, aged 19-25, were randomly assigned to one of three groups: VR exergame, VR nature video, or control. Participants completed the Flanker and AB tasks before and after the intervention. A repeated measures design was employed to analyze changes in response times and accuracy across pre- and post-test sessions. The study revealed significant improvements in response times and accuracy across all groups in the post-test measures, indicating a strong training effect. In the AB task, shorter stimulus onset asynchrony (SOA) led to decreased accuracy and slower response times, emphasizing the difficulty in processing closely spaced targets. The interaction between Type and Group in response times for target stimuli suggested that the intervention types differentially influenced processing speed in specific conditions. The findings suggest that while brief VR interventions did not produce significant differences between groups, the training effect observed highlights the influence of task-specific factors such as SOA and target presence. Further research is needed to explore whether longer or repeated VR sessions, as well as the optimization of task-specific parameters, might lead to more pronounced cognitive benefits.

Is dialect proficiency associated with improved executive function?

Abstract A broad and extensive literature has investigated the cognitive consequences of bilingualism on cognitive control. Results from these studies, while controversial, support the conclusion that speaking a second language confers non-linguistic benefits. Whether other related linguistic experiences, such as dialect use, confer similar benefits remains an underexplored and open question. The common use of a diverse range of local dialects across China provides ideal conditions under which to explore this question. Using a dialectally heterogeneous sample of Mandarin-English bilingual young adults (n = 74), the present study investigated whether differences in dialect proficiency impacted on inhibition and attentional control while accounting for variation in language experience. Dialect proficiency was not associated with improved performance on the Simon task, Attention Network Test, or Flanker task, suggesting no benefits in inhibition or attentional control. Considerations for future studies investigating the influence of Chinese dialect experience on cognitive control are discussed.

Digital eye strain symptoms worsen during prolonged digital tasks, associated with a reduction in productivity

PurposeIt is often stated that digital eye strain can impact productivity and/or work accuracy, but the relationship between symptoms, productivity, and work accuracy has been unclear. Hence this study tracked the development of visuo-ocular symptoms during prolonged digital tasks and to explore the impact of higher and lower cognitive load levels on visuo-ocular symptoms, productivity, and work accuracy. MethodsThirty-five participants (23.2 ± 4.0 years) who had digital eye strain (diagnosed with the Computer Vision Syndrome Questionnaire) undertook an uninterrupted laptop adapted Eriksen Flanker task for 60 min on two separate days, once with a high cognitive load in randomised sequence. Symptoms were assessed at baseline and every 10 min throughout the task. ResultsAll visuo-ocular symptom scores significantly worsened (F = 87.783, p < 0.001) with time, with the symptom severity increasing faster with the higher cognitive load (F = 7.110, p < 0.001). The mean total number of tasks completed was greater for the lower (1060.8 ± 296.5) than the higher (532.2 ± 123.4) cognitive load tasks (F = 138.830, p < 0.001), reducing with time (F = 7.339, p < 0.001), but in a similar way for both cognitive loads (F = 1.795, p = 0.154). Task accuracy was not affected by the cognitive load of the task (F = 1.729, p = 0.197) and was consistent over time (F = 1.885, p = 0.135). ConclusionsSymptoms increased with task duration in individuals with digital eye strain, with a faster rate for more demanding tasks. This was associated with a decrease in the task completion rate (productivity), but not the work accuracy.

The inhibitory control deficit of internet gaming disorder: An Event-Related Potentials(ERPs) study

IntroductionThe primary difficulty and challenge encountered by individuals with Internet Gaming Disorder (IGD) is inhibitory control deficit. Given that different types of inhibitory control have different effects on IGD patients, it is critical to investigate the neurological cognitive processes underlying various inhibitory control problems. MethodsThe IGD-20 questionnaire was used to identify Internet game disorder and healthy control group, and finally Internet game disorder in (n=25) and healthy control group (n=28) in Flanker task, Internet game disorder (n=29) and health control group (n=24) in GO/NOGO task. The Flanker task was employed to investigate distractor interference inhibition control in those with IGD, while the Go/NoGo task was used to measure their prepotent response inhibitory control. Event-related potentials (ERPs) were used to evaluate the brain mechanisms difference of both IGD and healthy participants during these different inhibitory control tasks. ResultsFindings indicate that compared to healthy control subjects, individuals with Internet Gaming Disorder (IGD) have deficits in inhibitory control tasks during both distraction inhibition and prepotent response inhibition tasks, and distraction inhibition occurs earlier than prepotent response inhibition. In distraction inhibition tasks, the IGD group's N2 amplitude is significantly lower than the healthy control groups. In prepotent response inhibition, the N2 amplitude provoked in the IGD group is not only significantly lower than in the healthy control group, but the P3 amplitude is also significantly larger in the IGD group. The main brain activity areas of interference inhibitory control are the frontal lobe and prefrontal lobe, while the main brain activity areas of prepotent response inhibitory control are the frontal lobe and occipital lobe. ConclusionThe present study concentrates on the differential neurophysiological characteristics observed in individuals with Internet gaming problems, notably the ability to avoid distractions and prepotent reactions. The current research provides foundations for the assessment and development of tailored therapy and treatment methods to address the wide variety of cognitive problems reported in individuals with Internet Gaming Disorder (IGD).

The impact of maturation level, not chronological age, on attentional control: implications for sports injury prevention in female adolescents

BackgroundNon-contact injuries are highly prevalent among young athletes and occur particularly in situations that require fast decision making and divided attention. Administering relevant neurocognitive tests could help identify deficiencies in these cognitive abilities and thus potentially mitigate injury risk. However, processes such as selective attention and response inhibition might depend to some extent on the athlete’s maturation stage. We aimed to examine the effect of maturation on selective visual attention and response inhibition among adolescent volleyball players.MethodsIn this cross-sectional study, 52 female adolescents (age 12.3 ± 2.1 years) performed an Eriksen Flankers task. Participants were divided into subgroups based on their estimated adult stature, using the Khamis & Roche method: Pre-pubertal (PRE; n = 13, age: 9.9 ± 1.3), early-puberty (EPUB; n = 7, age: 10.5 ± 0.6), mid-puberty (MPUB; n = 8, age: 12.6 ± 0.8) and late puberty (LPUB; n = 24, age: 14.1 ± 0.9). Analyses of covariance (ANCOVA) were performed on congruent and incongruent reaction times (RT), with corresponding success rates (% correct responses) as covariate. Flanker interference effect was tested using ANOVA. Correlations were further examined between the dependent variables and participants’ chronological age.ResultsThere was a significant group effect, with PRE demonstrating longer RT compared with LPUB (P < 0.001) for both congruent and incongruent RT. Moderate negative correlations were observed between age and RT (Rp = -0.695, Rp = -0.614 for congruent and incongruent RT, respectively) and low positive correlations between age and incongruent success rate (Rs = 0.318). Low to moderate correlations were also observed within the LPUB group for RT (Rp = -0.431–-0.532) and success rate (negative Rs = -574 for congruent and positive Rs = 0.417 for incongruent). There were no group differences nor age associations with interference effect.ConclusionsOur findings indicate that information processing and selective visual attention are superior at late maturation compared with early maturation among female adolescents. The same cannot be said for response inhibition, which did not differ between maturation groups. Similar tendencies were observed with regards to chronological age, but not entirely explained by it. Maturation level, rather than chronological age, should guide practitioners during sport participation and injury prevention programs for young athletes, whose neurocognitive abilities are not yet fully developed, placing them at risk for non-contact injuries.

The impact of an exercise and sport intervention on cognitive function and pain among forcibly displaced individuals at risk for PTSD: a secondary analysis of the SALEEM randomized controlled trial

BackgroundIn response to the global scope of forced displacement, international organizations highlight the need of scalable solutions to support individuals’ health and integration into host societies. Exposure to high mental and physical stress perceived before, during, and after displacement can impair functional capabilities, essential for adapting to a new environment. This secondary analysis examined the impact of an exercise and sport intervention on cognitive function and pain severity among individuals living in a refugee camp in Greece.MethodsWe implemented a randomized controlled trial involving n = 142 (52.8% women) forcibly displaced individuals from Southwest Asia and Sub-Saharan Africa. Participants were randomly assigned to a waitlist or a 10-week co-designed exercise and sport intervention with a 1:1 allocation rate between groups and sexes. Assessments at baseline and follow-up included the Flanker task, the Oddball paradigm, pain severity via visual analog scales, and the Åstrand-Rhyming indirect test of maximal oxygen uptake. We analyzed the intervention effects using structural equation modeling.ResultsOur findings did not indicate a direct intervention effect on cognitive function or pain (p ≥ .332). However, the intervention group significantly improved cardiorespiratory fitness, ß = .17, p = .010, which was associated with faster reaction times in cognitive tasks, ß = − .22, p = .004. Moreover, there was some evidence that adherence might be linked to reduced pain severity, ß = − .14, p = .065.ConclusionsExercise and sport did not directly impact cognitive function and pain severity among a sociodemographically diverse sample living in a refugee camp, suggesting the need for complementary measures. Nevertheless, our results indicate that improvements in cardiorespiratory fitness benefit aspects of attention.Trial registrationThe study was approved by the local ethics committee of the University of Thessaly (no. 39) and registered prospectively on February 8, 2021 at the ISRCTN registry (no. 16291983).

Cognitive benefits of higher cardiorespiratory fitness in preadolescent children are associated with increased connectivity within the cingulo-opercular network

Higher cardiorespiratory fitness has been associated with improved cognitive control in preadolescent children, with various studies highlighting related brain health benefits. This cross-sectional study aimed to provide novel insights into the fitness-cognition relationship by investigating task-related changes in effective connectivity within two brain networks involved in cognitive control: the cingulo-opercular and fronto-parietal networks. Twenty-four higher-fit and twenty-four lower-fit preadolescent children completed a modified flanker task that modulated inhibitory control demand while their EEG and task performance were concurrently recorded. Effective connectivity for correct trials in the theta band was estimated using directed transfer function. The results indicate that children with higher fitness levels demonstrated greater connectivity in specific directions within the cingulo-opercular network (average effect size, d = 0.72). Brain-behavior correlations demonstrated a positive association between the majority of these connections and general task accuracy, which was also higher in higher fit children (average correlation coefficient, ρ = 0.34). The findings further support a positive relationship between fitness and cognitive performance in children. EEG findings offer novel insights into the potential brain mechanisms underlying the fitness-cognition relationship. The study suggests that increased task-related connectivity within the cingulo-opercular network may mediate the cognitive benefits associated with higher fitness levels in preadolescent children.

A registered report of a two-site study of variations of the flanker task: ERN experimental effects and data quality.

Error-related negativity is a widely used measure of error monitoring, and many projects are independently moving ERN recorded during a flanker task toward standardization, optimization, and eventual clinical application. However, each project uses a different version of the flanker task and tacitly assumes ERN is functionally equivalent across each version. The routine neglect of a rigorous test of this assumption undermines efforts to integrate ERN findings across tasks, optimize and standardize ERN assessment, and widely apply ERN in clinical trials. The purpose of this registered report was to determine whether ERN shows similar experimental effects (correct vs. error trials) and data quality (intraindividual variability) during three commonly used versions of a flanker task. ERN was recorded from 172 participants during three versions of a flanker task across two study sites. ERN scores showed numerical differences between tasks, raising questions about the comparability of ERN findings across studies and tasks. Although ERN scores from all three versions of the flanker task yielded high data quality and internal consistency, one version did outperform the other two in terms of the size of experimental effects and the data quality. Exploratory analyses of the error positivity (Pe) provided tentative support for the other two versions of the task over the paradigm that appeared optimal for ERN. The present study provides a roadmap for how to statistically compare psychometric characteristics of ERP scores across paradigms and gives preliminary recommendations for flanker tasks to use for ERN- and Pe-focused studies.

Task-specific topology of brain networks supporting working memory and inhibition.

Network neuroscience explores the brain's connectome, demonstrating that dynamic neural networks support cognitive functions. This study investigates how distinct cognitive abilities-working memory and cognitive inhibitory control-are supported by unique brain network configurations constructed by estimating whole-brain networks using mutual information. The study involved 195 participants who completed the Sternberg Item Recognition task and Flanker tasks while undergoing electroencephalography recording. A mixed-effects linear model analyzed the influence of network metrics on cognitive performance, considering individual differences and task-specific dynamics. The findings indicate that working memory and cognitive inhibitory control are associated with different network attributes, with working memory relying on distributed networks and cognitive inhibitory control on more segregated ones. Our analysis suggests that both strong and weak connections contribute to cognitive processes, with weak connections potentially leading to a more stable and support networks of memory and cognitive inhibitory control. The findings indirectly support the network neuroscience theory of intelligence, suggesting different functional topology of networks inherent to various cognitive functions. Nevertheless, we propose that understanding individual variations in cognitive abilities requires recognizing both shared and unique processes within the brain's network dynamics.