scholarly journals The impact of age and education on phonemic and semantic verbal fluency: Behavioral and fMRI correlates

2021 ◽  
Author(s):  
Rochele Paz Fonseca ◽  
Karine Marcotte ◽  
Lilian C. Hubner ◽  
Nicolle Zimmermann ◽  
Tânia Maria Netto ◽  
...  
Keyword(s):  
Verbal Fluency ◽  
Age Groups ◽  
Semantic Fluency ◽  
Posterior Cingulate ◽  
Education Effect ◽  
Phonemic Fluency ◽  
Main Effect ◽  
The Right ◽  
The Impact ◽  
Effect Of Age

AbstractThe purpose of this study was to examine the impact of age and education on the neural and behavioral correlates of verbal fluency. Forty-eight healthy adult participants were included: high-educated young and elderly, low-educated young and elderly. Participants performed semantic and phonemic and a control task during fMRI scanning. The phonemic fluency data showed an education effect across age groups. As for the semantic fluency data, there was an education effect only in young participants. The second-level fMRI results showed, in phonemic fluency, a main effect of age in the left posterior cingulate, superior temporal gyrus (STG) and right caudate, whereas the main effect of education involved activation in the right semantic fluency, there were a main effect of age in the left paracentral lobule and posterior cingulate, a main effect of education in the left claustrum and an interaction in the right claustrum and STG and the hippocampus bilaterally.

scholarly journals Performance of Brazilian children on phonemic and semantic verbal fluency tasks

2011 ◽  
Vol 5 (2) ◽  
pp. 78-84 ◽  
Author(s):  
Helenice Charchat-Fichman ◽  
Rosinda Martins Oliveira ◽  
Andreza Morais da Silva
Keyword(s):  
Verbal Fluency ◽  
Age Groups ◽  
International Studies ◽  
Semantic Fluency ◽  
Phonemic Fluency ◽  
Significant Difference ◽  
Positive Correlations ◽  
Effect Of Age ◽  
Fluency Task ◽  
Brazilian Children

Abstract The most used verbal fluency paradigms are semantic and letter fluency tasks. Studies suggest that these paradigms access semantic memory and executive function and are sensitive to frontal lobe disturbances. There are few studies in Brazilian samples on these paradigms. Objective: The present study investigated performance, and the effects of age, on verbal fluency tasks in Brazilian children. The results were compared with those of other studies, and the consistency of the scoring criteria data is presented. Methods: A sample of 119 children (7 to 10 years old) was submitted to the three phonemic fluency (F, A, M) tasks and three semantic fluency (animals, clothes, fruits) tasks. The results of thirty subjects were scored by two independent examiners. Results: A significant positive correlation was found between the scores calculated by the two independent examiners. Significant positive correlations were found between performance on the semantic fluency task and the phonemic fluency task. The effect of age was significant for both tasks, and a significant difference was found between the 7- and 9-year-old subjects and between the 7- and 10-year-old subjects. The 8-year-old group did not differ to any of the other age groups. Conclusion: The pattern of results was similar to that observed in previous Brazilian and international studies.

scholarly journals Lateralized Cerebellar Contributions to Word Generation: A Phonemic and Semantic Fluency Study

2010 ◽  
Vol 23 (1-2) ◽  
pp. 31-37 ◽  
Author(s):  
Tom A. Schweizer ◽  
Michael P. Alexander ◽  
B. A. Susan Gillingham ◽  
Michael Cusimano ◽  
Donald T. Stuss
Keyword(s):  
Verbal Fluency ◽  
Cerebellar Lesion ◽  
Healthy Controls ◽  
Semantic Fluency ◽  
Word Generation ◽  
Phonemic Fluency ◽  
Cerebellar Lesions ◽  
The Right ◽  
Fluency Task ◽  
Neuropsychological Findings

Impairment on verbal fluency tasks has been one of the more consistently reported neuropsychological findings after cerebellar lesions, but it has not been uniformly observed and the possible underlying cognitive basis has not been investigated. We tested twenty-two patients with chronic, unilateral cerebellar lesions (12 Left, 10 Right) and thirty controls on phonemic and semantic fluency tasks. We measured total words produced, words produced in the initial 15 seconds, errors and strategy switches. In the phonemic fluency task, the right cerebellar lesion (RC) group produced significantly fewer words compared to the left cerebellar lesion (LC) group and healthy controls, particularly over the first 15 seconds of the task with no increase in errors and significantly fewer switches over the entire task. In the semantic fluency task there was only a modest decrease in total words in the RC group compared to controls. RC lesions impair fluency with many of the same performance characteristics as left prefrontal lesions. This supports the hypotheses of a prefrontal-lateral cerebellar system for modulation of attention/executive or strategy demanding tasks.

scholarly journals Influence of age and education on the processing of clustering and switching in verbal fluency tasks

2018 ◽  
Vol 12 (4) ◽  
pp. 360-367 ◽  
Author(s):  
Andressa Hermes Pereira ◽  
Ana Bresolin Gonçalves ◽  
Maila Holz ◽  
Hosana Alves Gonçalves ◽  
Renata Kochhann ◽  
...  
Keyword(s):  
Educational Level ◽  
Repeated Measures ◽  
Verbal Fluency ◽  
Cluster Size ◽  
Age Groups ◽  
Main Effect ◽  
Middle Aged Adults ◽  
Semantic Cluster ◽  
Mixed Clusters ◽  
Effect Of Age

ABSTRACT Verbal fluency (VF) is a widely used tool in neuropsychological assessment. Objective: We aimed to investigate the influence of age and educational level on clustering and switching in three VF modalities: phonemic (PVF), semantic (SVF) and unconstrained (UVF). We evaluated type of cluster, mean cluster size, and quantity of clusters, intersections, and returns. A total of 260 healthy subjects were assessed. Methods: Participants were divided into three age groups: young adults (18 to 39 years), middle-aged adults (40 to 59 years) and older adults (60 to 80 years) and into two groups of educational level: 1-8 years (low), 9 years or more (high). A two-way ANOVA analysis was conducted to analyze the effect of age and educational level and its interactions. A repeated measures ANOVA was performed to verify the performance during the task. Results: A main effect of age was detected on the UVF and SVF scores for total switches, taxonomic clusters, and for the total semantic clusters on the SVF. There was a greater effect of educational level on total switches (UVF, PFV and SVF), taxonomic clusters (UVF and SVF), thematic clusters and total semantic cluster (UVF), phonemic and mixed clusters (PVF), mean cluster size (UVF and SVF) and intersections (SVF). Educational level had a greater effect on all three VF tasks.

scholarly journals An approach to assess stress in response to drive hunts using cortisol levels of wild boar (Sus scrofa)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Justine Güldenpfennig ◽  
Marion Schmicke ◽  
Martina Hoedemaker ◽  
Ursula Siebert ◽  
Oliver Keuling
Keyword(s):  
Wild Boar ◽  
Stress Hormones ◽  
Age Groups ◽  
Group Living ◽  
Well Being ◽  
Lower Saxony ◽  
Cortisol Levels ◽  
Negative Impacts ◽  
The Impact ◽  
Effect Of Age

AbstractHunting can easily be linked to stress in wildlife. Drive hunts performed two to three times in one area during the respective hunting period, are thought to decrease the pressure hunting places on wildlife. Nevertheless, the expression of cortisol—one of the main mammalian stress hormones—is considered to have negative impacts on animals’ well-being if expressed excessively, which may occur during some (especially repeated) hunting events. We explored the effect of drive hunts on cortisol levels in wild boar in Lower Saxony, Germany, compared these cortisol levels to reference values given by a similar study, and investigated the effect of age, sex, and pregnancy. Blood collected from wild boar shot on drive hunts was analysed using a radioimmunoassay. As expected, we observed elevated cortisol levels in all samples, however, we still found significant differences between age groups and sexes, as well as an influence of pregnancy on cortisol levels. The effect of drive hunts on cortisol levels appears to be weaker than predicted, while the effects of other variables, such as sex, are distinct. Only half of the evaluated samples showed explicitly increased cortisol levels and no significant differences were found between sampling months and locations. Group living animals and pregnant females showed significantly higher cortisol levels. The impact of hunting is measurable but is masked by natural effects such as pregnancy. Thus, we need more information on stress levels in game species.

scholarly journals Performance of Children in Phonemic and Semantic Verbal Fluency Tasks

Psico-USF ◽  
2016 ◽  
Vol 21 (2) ◽  
pp. 293-304 ◽  
Author(s):  
Gilmara de Lucena Leite ◽  
Izabel Augusta Hazin Pires ◽  
Laura Carolina Lemos Aragão ◽  
Artemis Paiva de Paula ◽  
Ediana Rossely de Oliveira Gomes ◽  
...  
Keyword(s):  
Explicit Memory ◽  
Verbal Fluency ◽  
Age Groups ◽  
Memory Systems ◽  
Semantic Fluency ◽  
Age And Gender ◽  
Northeast Region ◽  
Semantic Verbal Fluency ◽  
And Gender ◽  
Brazilian Northeast

Abstract This study investigated the performance of children from the Brazilian Northeast region, from 7 to 10 years in phonemic and semantic verbal fluency tasks. The participants were 102 subjects (62 girls and 40 boys) who performed three phonemic and three semantic fluency tasks. The results were submitted to correlational and variance analysis to investigate the influence of the variables age and gender on the subjects performance. There was no effect of gender on the results. Significant contrasts between age groups were found, and better performance was observed on phonemic tasks. Also, the performance in this task changed along development, in contrast to what happened with the semantic fluency. The findings seem to be in accordance to neurodevelopmental aspects, taken into account that explicit memory systems show more precocious maturational course, with earlier consolidation, in comparison to the executive functions and frontal lobes, which go on developing until adult ages.

Cumulative reproductive performance effect on overall lifetime productivity in Merino sheep

2018 ◽  
Vol 58 (8) ◽  
pp. 1470
Author(s):  
J. S. Richards ◽  
M. A. Sladek ◽  
G. J. Lee
Keyword(s):  
Reproductive Performance ◽  
New South ◽  
Dental Health ◽  
Age Groups ◽  
The South ◽  
Performance Effect ◽  
South West ◽  
South Wales ◽  
The Impact ◽  
Effect Of Age

Reproduction is an important driver of profitability in commercial sheep flocks. Historically, Merino flocks have been run with a fixed age structure, ignoring individual merit and casting for age at a specific age. More recently, research has focussed on utilising the variation within age groups by keeping productive older ewes longer and culling less productive ewes earlier. Previous studies have also examined the effect of age on reproduction and the impact of reproduction status on productivity, but little research has been conducted on cumulative effects of reproductive performance on later productivity, reproduction and health. The present study examined the impact of higher lifetime reproduction on other key production and fitness traits in older ewes run under commercial conditions. Data were collected from two commercial wool-producing properties in the South West Slopes and the Central West Plains of New South Wales during 2009–2011. Reproduction, fleece measurements, bodyweight and condition and dental health were recorded during the study. The results showed that age had a bigger effect on productivity and dental health than did cumulative lifetime reproduction. Environment and genetics determined the level of impact, with minimal loss in productivity from increased age of animals occurring in the South West Slopes flock, whereas the Central West Plains flock would appear to require closer monitoring of productivity as ewes aged. The data collected did not allow separation of the genetic and environmental influences within the study. Retaining animals with a higher reproductive performance past normal culling age does not necessarily result in reduction of productivity or ewe health, but this must be monitored.

scholarly journals PERSONALITY TRAITS AND VERBAL FLUENCY IN 10 COHORTS

2019 ◽  
Vol 3 (Supplement_1) ◽  
pp. S777-S778
Author(s):  
Antonio Terracciano ◽  
Angelina R Sutin
Keyword(s):  
Cognitive Impairment ◽  
Personality Traits ◽  
Verbal Fluency ◽  
Factor Model ◽  
Five Factor Model ◽  
Meta Analysis ◽  
Age Groups ◽  
Cognitive Outcomes ◽  
Semantic Fluency ◽  
Age Range

Abstract Personality traits are associated with cognitive outcomes across the lifespan, including cognitive function in young adulthood and risk of cognitive impairment and dementia in old age. This study examined the association between the Five Factor Model personality traits and verbal fluency in 10 cohorts (11 samples) that totaled more than 90,000 participants (age range 16-101). Meta-analysis indicated that participants who scored lower in Neuroticism, and higher in Extraversion, Openness, and Conscientiousness retrieved more words, independent of age, gender, and education. These associations were consistent across semantic and letter fluency tasks. Moderation analysis indicated that the associations between personality and semantic fluency were stronger in older samples (except for Openness) and among individuals with lower education. This pattern suggests that these associations are stronger in groups vulnerable to cognitive impairment and dementia. Personality traits have pervasive associations with fluency tasks that are replicable across samples and age groups.

scholarly journals Verbal fluency: Effect of time on item generation

2011 ◽  
Vol 5 (2) ◽  
pp. 104-107 ◽  
Author(s):  
Mayra Jacuviske Venegas ◽  
Leticia Lessa Mansur
Keyword(s):  
Verbal Fluency ◽  
Generation Time ◽  
The Other ◽  
Final Test ◽  
Item Generation ◽  
Promising Tool ◽  
Phonemic Fluency ◽  
Fluency Effect ◽  
Effect Of Age ◽  
Test Result

Abstract The distribution of item generation/time in the performance of elderly on verbal fluency (VF) remains unknown. Objective: To analyze the number of items, their distribution and impact of the first quartile on the final test result. Methods: 31 individuals performed the tests (average age=74 years; schooling=8.16 years). Results: The number of items produced in the first quartile differed from the other quartiles for both semantic and phonologic VF where 40% of items were produced in the first quartile. No effect of age was found and schooling influenced performance on the first and second quartiles of semantic VF and on the 1st, 2nd and 3rd quartiles of phonemic VF. Discussion: This study contributes with the finding that asymptotic levels are attained prior to the 30 seconds observed in other studies, being reached at the 15-second mark. Furthermore, schooling was found to be associated to the number of items produced in both the first and 2nd quartiles for semantic VF, and in 1st, 2nd and 3rd quartiles for phonemic fluency. Conclusion: The schooling effect was noted both in semantic and executive aspects of VF. The brief form of the VF test may represent a promising tool for clinical evaluation.

Clustering and switching on verbal fluency tests in Alzheimer's and Parkinson's disease

1998 ◽  
Vol 4 (2) ◽  
pp. 137-143 ◽  
Author(s):  
Angela K. Troyer ◽  
Morris Moscovitch ◽  
Gordon Winocur ◽  
Larry Leach ◽  
and Morris Freedman
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Verbal Fluency ◽  
Semantic Fluency ◽  
Alzheimer Type ◽  
Control Groups ◽  
Respective Control ◽  
Phonemic Fluency ◽  
Differential Pattern ◽  
Pattern Of Performance

Two components of verbal fluency performance—clustering (i.e., generating words within subcategories) and switching (i.e., shifting between subcategories)—were examined in patients with dementia of the Alzheimer type (DAT), patients with dementia with Parkinson's disease (DPD), nondemented patients with Parkinson's disease (NPD), and demographically matched controls. The DAT and DPD groups were impaired in the number of words generated on both phonemic and semantic fluency. The DAT group produced smaller clusters on both tasks and switched less often on semantic fluency than controls. The DPD group switched less often on both tasks and produced smaller clusters on phonemic fluency than controls. The NPD group was not impaired on any fluency variable. Thus, the total number of words generated on phonemic and semantic fluency did not discriminate the dementia groups from their respective control groups, but measures of clustering and switching did. This differential pattern of performance provides evidence for the potential usefulness of measures of switching and clustering in the assessment of dementia. (JINS, 1998, 4, 137–143.)

Differential Effects of Aging on Two Verbal Fluency Tasks

1993 ◽  
Vol 76 (2) ◽  
pp. 465-466 ◽  
Author(s):  
Rachel Tomer ◽  
Bonnie E. Levin
Keyword(s):  
Healthy Volunteers ◽  
Verbal Fluency ◽  
Semantic Category ◽  
Semantic Fluency ◽  
Alzheimer Type ◽  
Differential Effects ◽  
Alzheimer Type Dementia ◽  
Older Subjects ◽  
Effects Of Aging ◽  
Effect Of Age

The effect of age on verbal fluency was studied in 84 healthy volunteers, ages 45 to 91 years, who performed letter-fluency and semantic-fluency tasks. Older subjects (75 to 91 yr.) performed as well as younger (50 to 64 yr.) on letter fluency but did significantly worse on semantic category fluency. This pattern is similar to that observed in Alzheimer-type dementia.

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