Cancellation Test Research Articles

Modifying the Methodology of Letter Cancellation Test for Digital Representation

Standard tools of attention diagnosis have seen only a few attempts of modernization. A theoretical and methodological analysis revealed data contradictions both in assignment and criteria. Digital versions of cognitive diagnostic material could be more objective due to modern hardware and software methods that register psychophysiological indicators. This research was an attempt to digitalize a standard letter variant of letter cancellation test. It involved a theoretical and methodological analysis of attention studies and diagnostic methods. The authors developed new stimulus material for digital attention tests and studied them using oculography. The research involved 90 people (33 men and 57 women) aged 16–70 y.o. The oculography revealed a set of oculomotor reactions that made it possible to describe the peculiarities of attention process and its stages, as well as to establish such a phenomenon as inattention blindness. The experiment also revealed some stable patterns in search strategies and oculomotor reactions that occurred during the testing. While searching for a target stimulus in a limited time, respondents usually employ two basic strategies: 1) they read elementary units of information to integrate them into a single image; 2) they stick to symbolic content with subsequent selective processing to select the target stimulus from the information flow. In this research, however, the participants also used additional strategies: 3) they completely ignored the target word; 4) they reduced the volume of the target stimulus (incomplete response) with its complete detection by oculomotor reactions; 5) they combined elements mechanically; 6) they turned to confabulation.

Post-stroke fatigue severity is associated with executive dysfunction in chronic stroke

ABSTRACT Following stroke, fatigue is highly prevalent and managing fatigue is consistently rated a key unmet need by stroke survivors and professionals. Domain-specific cognitive impairments have been associated with greater fatigue severity in earlier stages of stroke recovery, but it is unclear whether these associations hold in chronic (>2 years) stroke. The present cross-sectional observational study evaluates the relationship between domain-specific cognitive functioning and the severity of self-reported fatigue among chronic stroke survivors. Participants (N = 105; mean age = 72.92, 41.90% female; mean years post-stroke = 4.57) were assessed in domains of attention (Hearts Cancellation test), language (Boston Naming Test), episodic memory (Logical Memory Test), working memory (Digit Span Backwards task), and executive functioning (set-shifting: Trail Making Test, Part B), as part of the OX-CHRONIC study, a longitudinal stroke cohort. Fatigue was assessed using the Fatigue Severity Scale. In a multiple linear regression analysis inclusive of above cognitive domains, only poorer executive functioning was associated with increased fatigue severity. This provides insight into the cognitive impairment profile of post-stroke fatigue long-term after stroke, with executive functioning deficits as the key hallmark.

Associations Between Hydration Status and Executive Function in Middle-Aged and Older Adults: Findings from the Nationally Representative Health and Retirement Study

The purpose of the current study is to examine the association between hydration status and cognitive function in middle-aged and older adults, drawing from a large, nationally representative sample in the United States and using a comprehensive set of executive function performance measures. We utilized data from the Health and Retirement Study to conduct twelve, three-stage hierarchical regressions on hydration status and executive function performance of older adults. Cognitive performance scores on the Trail Making A, Symbol Digit Modalities, and Letter Cancellation tests significantly differed by hydration status, and these outcomes follow a curvilinear pattern, such that performance scores are lower for those who are hyper-hydrated or dehydrated relative to those who are euhydrated or near-dehydration. Our study’s findings are consistent with prior studies examining the impact of serum osmolarity on cognitive performance. Specifically, a curvilinear pattern was associated with speed of processing tests of executive function. Overall, hydration status is associated with curvilinear patterns of performance on executive function measures, specifically Trail Making A, Symbol Digit Modalities, and Letter Cancellation Tests.

Time to sense biofield (Prana) experiences between hands: A preliminary single blinded randomized placebo controlled trial

Aims There is minimal research on the duration of biofield experiences. This preliminary study used the experiential learning practice of Master Choa Kok Sui's hands sensitisation to determine the duration to experience biofield sensations in between hands and to find the relationship between learning style preferences and biofield sensations. Methods This randomized placebo controlled, single blinded trial included 88 male and female pre-service teachers, aged 22.8±1.2 years. Participants completed a ruler drop test for reaction time, and Six Letter Cancellation test for measuring attention, learning style questionnaire for preferred method of learning, before randomization. The experimental (hands facing each other as introduced by Master Choa Kok Sui) and sham (hands facing opposite) groups practiced hands sensitisation. A semi-structured questionnaire was provided to gather information about biofield sensations and the time it took to experience these sensations between the hands. Results All (N=44) the participants in the experimental group and 13 participants in the sham group reported experiencing biofield sensations. A significant difference was noticed in experiencing magnetic (X2 = 38.247, p ≤ .001), physical sensations of energy (X2 = 12.02, p ≤ .001) and pain (X2 = 62.259, p ≤ .001) among the experimental and sham group . In the experimental group, the average time taken to first experience magnetic sensation, other biofield sensations and temperature variation was 34.84±12.97seconds, 40.28±20.96 seconds and 42.50±19.79 seconds, respectively. Minimum time taken to first experience biofield sensation was 5 seconds and lasted up to study duration of 120 seconds. There was no correlation found between reaction time, sustained attention, and the time needed to experience biofield sensations. Conclusions This study highlights importance of Master Choa Kok Sui hand sensitization in controlled setting revealing differences in experiences of various biofield sensations, showing valuable time-related insights and variability of sensation based on preferred learning.

Cognitive profile in burning mouth syndrome versus mild cognitive impairment: A comparative study.

This study aims to assess and contrast cognitive and psychological aspects of patients with burning mouth syndrome (BMS-MCI) and geriatric patients (G-MCI) with mild cognitive impairment, focusing on potential predictors like pain, mood disorders, blood biomarkers, and age-related white matter changes (ARWMCs). The study enrolled 40 BMS-MCI and 40 geriatric G-MCI, matching them by age, gender, and educational background. Participants underwent psychological, sleepiness, and cognitive assessment including the Mini-Mental State Exam (MMSE), Trail Making Test (TMT), Corsi Block-Tapping Task, Rey Auditory Verbal Learning Test, Copying Geometric Drawings Test, Frontal Assessment Battery, and Digit Cancellation Test. G-MCI patients exhibited higher ARWMCs scores in right (p = 0.005**) and left (p < 0.001**) temporal regions, which may relate to specific neurodegenerative processes. Conversely, BMS-MCI patients showed higher levels of depression and anxiety and lower MMSE scores(p < 0.001**), also struggling more with tasks requiring processing speed and executive function, as evidenced by their higher TMT-A scores (p < 0.001**). The study highlights particular deficits in global cognition and processing speed for BMS-MCI. The influence of educational background, pain levels, cholesterol, sleep disturbances, and anxiety on these cognitive assessments underscores the need for personalized therapeutic strategies addressing both cognitive and emotional aspects of MCI.

INFLUENCE OF VARIOUS STYLES OF MANTRA CHANTING ON STUDENT’S COGNITIVE PERFORMANCE

Background: Mantra is a tool to enhance mood regulation, stress management skills, and concentration and awareness. Materials &amp; Methods: There were 35 participants including men and women between the age of 20 to 45 years, in the present study. They were all instructed to recite the "Mahamrityunjaya mantra (MM)" for ten days as an orientation programme. Cognitive tools such the Six Letter Cancellation Test (SLCT), Wechsler Memory Scale (WMS), and Mindfulness Attention and Awareness Scale (MAAS) were used. These tools were used to evaluate all six sessions, including the baseline. On the first day of the program, all participants underwent a 10-day orientation, a seven-day washout period, and seven days of post-recording, which included loud chanting (LC), lips movement (LM), silent chanting (SC), audio listening (AL), and silent sitting (SS). As each session lasted 20 minutes, recordings were made for the post-assessment following the intervention for 20 minutes. Results: The Repeated measure ANOVA, Friedman test, and Wilcoxon signed ranked tests were done to analyse the data. The Mindfulness following mantra chanting was significantly higher during loud chanting (LC) (p&lt;0.05) compared to the silent chanting (SC) and the baseline. Also, the scores of digits backward (DB) were significantly higher in LC (p&lt;0.01), LM (p&lt;0.05), SC (p&lt;0.001), and AL (p&lt;0.01), compared to baseline. Conclusion: Results of the current study suggested that mindfulness prevails following the practice of LC and short-term memory following SC suggestive of more information processing in the amygdala, hippocampus, and pre-central cortex.

Time to sense biofield (Prana) experiences between hands: A preliminary single blinded randomized placebo controlled trial

Aims There is minimal research on the duration of biofield experiences. This preliminary study used the experiential learning practice of Master Choa Kok Sui's hands sensitisation to determine the duration to experience biofield sensations in between hands and to find the relationship between learning style preferences and biofield sensations. Methods This randomized placebo controlled, single blinded trial included 88 male and female pre-service teachers, aged 22.8±1.2 years. Participants completed a ruler drop test for reaction time, and Six Letter Cancellation test for measuring attention, learning style questionnaire for preferred method of learning, before randomization. The experimental (hands facing each other as introduced by Master Choa Kok Sui) and sham (hands facing opposite) groups practiced hands sensitisation. A semi-structured questionnaire was provided to gather information about biofield sensations and the time it took to experience these sensations between the hands. Results All (N=44) the participants in the experimental group and 13 participants in the sham group reported experiencing biofield sensations. A significant difference was noticed in experiencing magnetic (X2 = 38.247, p ≤ .001), physical sensations of energy (X2 = 12.02, p ≤ .001) and pain (X2 = 62.259, p ≤ .001) among the experimental and sham group . In the experimental group, the average time taken to first experience magnetic sensation, other biofield sensations and temperature variation was 34.84±12.97seconds, 40.28±20.96 seconds and 42.50±19.79 seconds, respectively. Minimum time taken to first experience biofield sensation was 5 seconds and lasted up to study duration of 120 seconds. There was no correlation found between reaction time, sustained attention, and the time needed to experience biofield sensations. Conclusions This study highlights importance of Master Choa Kok Sui hand sensitization in controlled setting revealing differences in experiences of various biofield sensations, showing valuable time-related insights and variability of sensation based on preferred learning.

When cancellation becomes unreasonable

Abstract Cancellability – one of the most important tests for implicatures – has been attacked from different perspectives, and its reliability challenged by several cases and examples in which conversational implicatures seem to be hard or even impossible to cancel. To account for these phenomena, distinct approaches have been advanced aimed at weakening Grice’s cancellability test. However, what do we exactly mean when we claim that an implicature cannot be cancelled? Grice pointed out that implicatures are triggered by a possible conflict with the cooperativeness principle, and for this reason it is always possible to opt out of the observation thereof. This theoretical possibility needs to be distinguished from the practical problem of explaining why some implicatures are intuitively less cancellable than others, or even not cancellable. To address this latter – practical – dimension of cancellability, the reasoning and the presumptive premises involved in drawing an implicature and justifying its cancellation needs to be represented and evaluated. This approach will be shown to provide a possible instrument for evaluating the reasonableness of cancellability and its costs.

Efficacy of yoga package on cognitive flexibility and attention in university girls: A single group pilot study

Executive functions and attention are key indicator of cognitive health. Cognitive flexibility, the ability to flexibly switch between tasks, is a core dimension of executive functions. Yoga helps to improve mental wellness, which consequently provides cognitive flexibility.This study aimed to determine the effect of yoga on cognitive flexibility and attention in university girls.Thirty healthy university girls (group mean ± SD; 18.27 ± 1.44) were enrolled as participants in the study. Trail Making Test (TMT) parts A and B were used to assess their cognitive flexibility whereas sustained attention was determined using Six Letter Cancellation Test (SLCT). The assessments were taken at baseline and after three months of yogic practices. Statistical analysis was performed by paired t-test to examine the effect of yoga on cognitive flexibility and attention in university girls.There was a significant decrease in time taken to complete TMT part A (t= 4.33; P&amp;#60;0.05) and a significant increase in total attempts (t= -2.75; P&amp;#60;0.05) and net attempts (t=-2.80; P&amp;#60;0.01) in six letter cancellation test after three months of yoga practice.The results suggest that yoga improves visual search ability and motor speed skills and hence cognitive flexibility and attention in university girls.

Reliability and validity of a novel attention assessment scale (broken ring enVision search test) in the Chinese population.

The correct assessment of attentional function is the key to cognitive research. A new attention assessment scale, the Broken Ring enVision Search Test (BReViS), has not been validated in China. The purpose of this study was to assess the reliability and validity of the BReViS in the Chinese population. From July to October 2023, 100 healthy residents of Changzhou were selected and subjected to the BReViS, Digital Cancelation Test (D-CAT), Symbol Digit Modalities Test (SDMT), and Digit Span Test (DST). Thirty individuals were randomly chosen to undergo the BReViS twice for test-retest reliability assessment. Correlation analysis was conducted between age, education level, gender, and various BReViS sub-tests including Selective Attention (SA), Orientation of Attention (OA), Focal Attention (FA), and Total Errors (Err). Intergroup comparisons and multiple linear regression analyses were performed. Additionally, correlation analyses between the BReViS sub-tests and with other attention tests were also analyzed. The correlation coefficients of the BReViS sub-tests (except for FA) between the two tests were greater than 0.600 (p < 0.001), indicating good test-retest reliability. The Cronbach's alpha coefficient was 0.874, suggesting high internal consistency reliability. SA showed a significant negative correlation with the net score of D-CAT (r = -0.405, p < 0.001), and a significant positive correlation with the error rate of D-CAT (r = 0.401, p < 0.001), demonstrating good criterion-related validity. The correlation analysis among the results of each sub-test showed that the correlation coefficient between SA and Err was 0.532 (p < 0.001), and between OA and Err was-0.229 (p < 0.05), whereas there was no significant correlation between SA, OA, and FA, which indicated that the scale had good informational content validity and structural validity. Both SA and Err were significantly correlated with age and years of education, while gender was significantly correlated with OA and Err. Multiple linear regression suggested that Err was mainly affected by age and gender. There were significant differences in the above indexes among different age, education level and gender groups. Correlation analysis with other attention tests revealed that SA negatively correlated with DST forward and backward scores and SDMT scores. Err positively correlated with D-CAT net scores and negatively with D-CAT error rate, DST forward and backward scores, and SDMT scores. OA and FA showed no significant correlation with other attention tests. The BReViS test, demonstrating good reliability and validity, assessing not only selective attention but also gauging capacities in immediate memory, information processing speed, visual scanning, and hand-eye coordination. The results are susceptible to demographic variables such as age, gender, and education level.

Effect of Volitional Modification of Breath Frequency on Attention and Mood States: An Exploratory Randomized Crossover Study.

Previously, yoga breathing improved mood states and attention but the effect of varying breath frequency on mood and attention was not clear. The objective of this study was to determine the effects of changes in breath frequency on attention, mood, vigor, and affect states. Thirty participants (mean age ± standard deviation, 27.3 ± 4.2 years) were assessed on 2 separate days practicing either high-frequency yoga breathing (HFYB, breath frequency 54.23/min) or bumblebee yoga breathing (BBYB, breath frequency 3.97/min) in random order. Assessments included blood pressure (BP), cancellation test scores, Nijmegen (to check for hyperventilation), respiration (rate, height of the breath wave [depth], and duration of inhalation relative to exhalation), mood states, vigor, and affect states. Diastolic BP increased after HFYB, whereas systolic BP decreased after BBYB, after both sessions scores in a cancellation test increased (changes in cancellation test performance suggest alertness and test-directed attention), also global vigor (signifying mental energy) and global affect (related to being "happy" and "calm") scores increased, whereas negative mood decreased after HFYB session (P < 0.05, Wilcoxon signed-rank test). Both HFYB and BBYB increased attention test scores, possibly due to cortical activation (HFYB) or relaxation (BBYB). In HFYB, breath frequency and inspiration duration increased suggestive of increased sympathetic activity, accounting for increased vigor, positive affect, and diastolic BP. In contrast in BBYB, low breath frequency, higher breath amplitude, and prolonged expiration suggestive of parasympathetic activity may account for the decreased systolic BP after BBYB.

The effect of tDCS on inhibitory control and its transfer effect on sustained attention in children with autism spectrum disorder: An fNIRS study

BackgroundIndividuals with autism spectrum disorder (ASD) have inhibitory control deficits. The combination of transcranial direct current stimulation (tDCS) and inhibitory control training produces good transfer effects and improves neuroplasticity. However, no studies have explored whether applying tDCS over the dlPFC improves inhibitory control and produces transfer effects in children with ASD. ObjectiveTo explore whether multisession tDCS could enhance inhibitory control training (response inhibition), near-transfer (interference control) and far-transfer effects (sustained attention; stability of attention) in children with ASD and the generalizability of training effects in daily life and the class, as reflected by behavioral performance and neural activity measured by functional near-infrared spectroscopy (fNIRS). MethodsTwenty-eight autistic children were randomly assigned to either the true or sham tDCS group. The experimental group received bifrontal tDCS stimulation at 1.5 mA, administered for 15 min daily across eight consecutive days. tDCS was delivered during a computerized Go/No-go training task. Behavioral performance in terms of inhibitory control (Dog/Monkey and Day/Night Stroop tasks), sustained attention (Continuous Performance and Cancellation tests), prefrontal cortex (PFC) neural activity and inhibitory control and sustained attention in the class and at home were evaluated. ResultsTraining (response inhibition) and transfer effects (interference control; sustained attention) were significantly greater after receiving tDCS during the Go/No-go training task than after receiving sham tDCS. Changes in oxyhemoglobin (HbO) concentrations in the dlPFC and FPA associated with consistent conditions in the Day/Night Stroop and Continuous Performance test were observed after applying tDCS during the inhibitory control training task. Notably, transfer effects can be generalized to classroom environments. ConclusionInhibitory control training combined with tDCS may be a promising, safe, and effective method for improving inhibitory control and sustained attention in children with ASD.

Depression as an independent risk factor for cardiovascular diseases and cognitive impairment in people aged 25-44 years

Aim. To establish associations between the depression level as an independent cardiovascular risk factor and cognitive impairment (patterns of memory, attention and thinking) in people aged 25-44 years.Material and methods. In 2013-2016, a random representative sample of people aged 25-44 years was studied in one of the Novosibirsk districts. A total of 463 men (mean age 35,94±5,96 years) and 546 women (mean age 36,17±5,99 years) were examined. Standardized tests were used to assess cognitive function. Depression level was assessed according to the MOPSY (MONICA-psychosocial) World Health Organization program criteria.Results. In the surveyed random representative sample of people aged 25-44 years, the prevalence of higher education was the highest (60,5%). The depression prevalence in women was higher than in men: high depression level — 15,84 and 8,64%; the mean depression level was 25,71 and 21,3%, respectively. Univariate analysis showed that the attention stability according to the dot cancellation test at a moderate and high depression level was reduced only in men with higher education, compared with those without depression (p=0,018). In persons of both sexes with secondary professional education in a random representative sample of persons aged 25-44 years, associations between depression and memory pattern disturbances were identified. In the resulting multivariate model, men in a random representative sample of persons aged 25-44 years without depression did not have any cognitive impairment in patterns of memory, attention and thinking.Conclusion. An association has been established between the depression and cognitive impairment (patterns of memory, attention and thinking) in people aged 25-44 years.

Психофизиологические особенности молодых людей с признаками интернет-зависимости

&lt;p&gt;The purpose of this work is to study the psychophysiological features and characteristics of the activity of the central nervous system in young people with signs of Internet addiction. Young people were investigated, students of grades 10-11 of Tyumen gymnasiums, as well as students of 1-3 courses of Tyumen State University were studied. Internet addiction was determined by the Chen test, the average screen time spent online using mobile gadgets was recorded, the level of anxiety was determined when modeling the symptom of network access cancellation. Cognitive plasticity was determined by the Stroop method. The properties of the central nervous system were studied using a Symbol Cancellation Test (Landolt rings), the critical frequency of the fusion of flickers, the time of simple and complex visual-motor reactions were measured. The following results were found: in gymnasium students with signs of Internet addiction, significant cognitive rigidity was recorded in congruent (1.19 &amp;plusmn; 0.05 s per solution; p&amp;lt;0.01 with control) and non-congruent (1.49 &amp;plusmn; 0.08 s per solution; p&amp;lt;0.001 with control) Scab samples, respectively. In the group with Internet addiction, low reliability of work on the Landolt test was also noted (Kp 16.24 &amp;plusmn; 2.09%; p &amp;lt;0.001 with control), low accuracy of work (At 0.76 &amp;plusmn; 0.03 units; p &amp;lt;0.001 with control) and more inert indicators of complex visual-motor reaction (436.66 &amp;plusmn; 14.52 ms; p&amp;lt;0.001 with control).The most pronounced negative characteristics associated with low reliability of information processing, low endurance and ability to differentiate in the central nervous system, as well as reduced selective perception of information were noted in the group of gymnasium students and, in part, in the risk groups of gymnasium students and students.&lt;/p&gt;

Feasibility of Computerized Visuomotor Integration System for Visual Field Defects and Spatial Neglect in Poststroke Patients.

To develop a computerized visuomotor integration system for assessment and training of visual perception impairments and evaluate its safety and feasibility in patients with a stroke. Visual field defects and spatial neglect lead to substantial poststroke impairment. Most diagnostic assessments are anchored in traditional methods, and clinical effects of rehabilitation treatments are limited. The CoTras Vision system included two evaluations and four training modules. The evaluation modules were based on the Albert's test and Star cancellation test, and training modules were based on visual tracking, central-peripheral integration, and visuomotor perception techniques. Bland-Altman plots for agreement with the traditional paper-and-pencil test were performed, and the modified Intrinsic Motivation Inventory, Patient Satisfaction Questionnaire, and Simulator Sickness Questionnaire were conducted. Ten patients with acute stroke completed the study. Bland-Altman plots revealed good agreements for Albert's test (mean difference, -0.3±4.5) and Star cancellation test (mean difference, 0.3±0.7). The mean±standard deviation scores of the modified Intrinsic Motivation Inventory, Patient Satisfaction Survey, and Simulator Sickness Questionnaire were 84.7±30.6, 40.5±7.9, and 34.0±34.5 respectively. The CoTras Vision system is feasible and safe in patients with stroke. Most patients had a high degree of motivation to use the system and did not experience severe adverse events. Further studies are needed to confirm its usefulness in stroke patients with visual field defects and hemineglect symptoms. Furthermore, a large, well-designed, randomized controlled trial will be needed to confirm the treatment effect of the CoTras Vision system.

Effect of Nadishodhana Pranayama on Cognitive Function amongHealthy Individuals

Background &amp; Objectives: The Nadishodhana pranayama, alternate nostril breathing, activates and harmonizes ida and pingala nadis. This study was aimed to evaluate the effect of commonly practiced Nadishodhana pranayama on cognitive functions in healthy individuals.Methods: A randomized control trial of 60 Subjects of age group fulfilling inclusion and exclusion criteria were recruited and randomly assigned to Group 1, study group (n=30) and Group 2 control group (n=30). Nadishodhana pranayama training was given for 15 min per session, 6 days per week for the duration of 8 weeks. Pre and Post parameters were recorded. Assessments were done using Cognitive parameters letter cancellation test, trail-making tests A and B (TMT), forward and backward digit spans.Results: The study assessed the effect of NSP on executive functions. The data was tested for normality using the Shapiro-wilks test. Within group comparisons and between groups comparisons were made using paired t test and independent sample test consecutively. Within group comparisons for study group showed a significant improvement in Single Letter Cancellation Test (p=0.0028) and digit span forward (p&lt;0.0005). Interestingly there was a significant reduction in digit span backward (p=0.005) in the control group. Between group comparisons showed a significant improvement in the digit span forward test following the intervention (p=0.003). The results suggest that Nadishodhana pranayama are beneficial for cognitive functions.Interpretation &amp; Conclusion: Nadishodhana pranayama practice is beneficial for improving cognitive functions, Hence Nadishodhana pranayama can be prescribed as effective modality to improve attention and manipulation in auditory working memory.

Effect of Yoga of Adaptive Yogasana Practice on the Flexibility and Psychomotor Variables in Intellectually Disabled Subjects.

Intellectual disability (ID) is a public health challenge affecting communities worldwide. ID is characterized by impaired physical and cognitive functioning and less engaged in physical activities. The objective of this study was to assess the impact of adaptive yoga practices on cognitive and motor abilities in the subjects with ID. Sixty-six subjects with mild and moderate IDs were purposively selected and randomly divided into experimental and control groups, with 33 subjects in each group. One month of adaptive yoga module was provided to the experimental group. To assess the impact of the yoga intervention, Functional Reach Test (FRT), Wall Toss Test (WTT), Finger Tapping Test (FTT), Sit-Reach Test (SRT), and Six Letter Cancellation Test (SLCT) were administered. The experimental group showed a statistically significant improvement with P < 0.05 across all the parameters, whereas the control group could not observe a significant improvement. Based on the results, this study concludes that "one month of adaptive yoga module" delivered impact and helped to improve the dynamic balance, eye-hand coordination, neuro-motor function, spinal flexibility, and selective attention in ID-afflicted subjects.

Assessment of Executive Functioning in School-Age Children With And Without Stuttering: A case-control study

Background: Stuttering is defined as a neurodevelopmental disorder, with disruptions in the normal fluency and time patterning of speech that are inappropriate for the individual's age and language skills. Executive functions (EF) include various cognitive skills, such as directing the attention required for planning and maintaining thoughts and behaviors, suppressing inappropriate stimuli, keeping the processed information active, and providing the transition between the information. This study was aimed at investigating whether there is a difference between school-age children with and without stuttering about executive functions (EF) skills and attention. Method: Twenty-six children with stuttering (14 boys; mean age=10.1±2.88) and twenty-five children without stuttering (14 boys; mean age=10.2±2.77) aged between 7 and 12 were admitted to the study. The participants were administered the Visual Aural Digit Span Test-B Form (VADS-B), which evaluates working memory and audiovisual attention, and the Cancellation Tests (CT), which evaluates sustained attention. The Parents of the participants were applied the Behavior Rating Inventory of Executive Function (BRIEF), which was developed to evaluate executive functions, problem-solving skills and adaptive behaviors. Differences in mean subscores of VADS-B, CT, and BRIEF were analyzed using univariate analysis of covariance (ANCOVA) with participant group as the factor and VADS-B, CT, and BRIEF subscores as the dependent variable; Chronological age (years) was designated as a covariate. Results: This study was conducted between two groups that were equal in terms of age, gender, developmental steps (walking, talking, toilet training), family structure, and socioeconomic status (p&gt;0.05). All subscales of VADS-B (aural-verbal, aural-written, visual-verbal, visual-written) were found to be significantly lower in children with stuttering (p&lt;0.05). In cancellation test results, there was a significant difference between the groups in terms of hit scores and total number of errors in organized letter and random letter forms (p&lt;0.05). No difference was found between the two groups in the BRIEF scale completed by the parents (p&gt;0.05). Conclusion: This study demonstrated that school-aged children with stuttering had weaker working memory and sustained attention performance in performance-based tests. Thus, we believe that in the evaluation and treatment of stuttering, comprehensive approaches should be adopted to evaluate attention and executive functions and to improve these functions. In this area, studies with larger samples are needed in which stuttering, attention, and executive functions are evaluated more comprehensively with different tasks (computer-based performance tests, parent-teacher scales, etc.) and neuroimaging (magnetic resonance imaging [MRI]). Lastly, the tasks used in our study (VADS-B, CT, and BRIEF) were applied to Turkish-speaking school-age children with stuttering for the first time. In this regard, we think that our study will contribute to the literature.

Morning-evening differences of short-term maximal performance and psychological variables in female athletes.

The aim of this study was to examine the effect of time of day on short-term maximal performance and psychological variables in young females. Fifteen active women participated in the study (age: 22 ± 3years) and completed Hooper and the POMS-F questionnaires subsequently. In a randomized order, they performed a maximum of 30s cycling exercise at two different times of day: in the morning at 07:00h and in the afternoon at 16:00h with a recovery period of 48h. The digit cancellation test, countermovement jump (CMJ), squat jump (SJ) test, and the lower quarter Y balance test were performed at the beginning and at the end of each session. Our results showed that only peak power and mean power (p < 0.01) during the maximum 30s cycling, reaching distances during the Y-balance (p < 0.05), Jump height in CMJ and SJ (p < 0.01) as well as attention, vigor, and stress scores (all p < 0.01) were higher in the afternoon than in the morning. Our results indicated a daily diurnal variation in short-term maximal performance and mood states in young athletic women with better performance observed during the afternoon.

Effect of Anaemia on Cognitive Ability in Female Dental Undergraduate Students: A Cross-sectional Study

Introduction: Anaemia not only impairs physical growth but also affects behavioral and cognitive abilities. Past studies have proved that increased haemoglobin levels result in improved Central Nervous System (CNS) functions. However, there is a significant lacuna between cognition and anaemia among young adults, especially females. Aim: To assess the cognitive ability of female undergraduate dental students with and without anaemia. Materials and Methods: This cross-sectional study included 100 young female dental students, aged between 18 and 23 years, who presented in the Department of Physiology, Vivekanandha Dental College for Women, Tiruchengode, Tamil Nadu, India, from February to July 2019. Haemoglobin levels were analysed using the colourimetric cyanmethemoglobin method with Drabkin’s solution, and based on this, the students were divided into anaemic and non anaemic groups. Cognitive status was assessed using the Digit Symbol Substitution Test (DSST), letter cancellation test, and Stroop test. The Student’s t-test and Pearson’s correlation were used to examine the association between haemoglobin levels and cognition. Results: The mean age in the anaemic group and non anaemic group was 19.95±1.80 years and 19.64±1.60 years, and the Body Mass Index (BMI) was 19.54±1.62 kg/m2 and 19.32±1.43 kg/m2 , respectively. Haemoglobin levels were significantly lower in the anaemic subjects at 10.408 gm/dL compared to the non anaemic subjects (p-value&lt;0.001). A statistically significant difference was observed between the two groups on DSST scores (21.10±2.99 versus 32.60±14.69), letter cancellation test (25.80±4.63 versus 35.80±4.56), and Stroop test (132.10±8.15 versus 123.56±10.52). Conclusion: The present study reported a significant association between anaemia and cognitive function. Therefore, early screening and prompt treatment of anaemia are crucial for improving both physical as well as mental health