Verbal Fluency Tasks and the Neuropsychology of Language

Pekkala, Seija

doi:10.1002/9781118432501.ch30

Cited by 17 publications

(23 citation statements)

References 68 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…VF tasks are often used as operating measures of language and executive functions [13]. Among VF tasks are tasks that measure semantic VF (requests for words from a specific semantic group, such as animals or fruits) [13, 14], phonemic VF (requests for words that start with a certain letter) [13, 15], verb fluency or action fluency (requests for words designating things that people do) [13, 16], and unconstrained VF (requests any word without a criterion) [17].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deep Brain Stimulation Frequency of the Subthalamic Nucleus Affects Phonemic and Action Fluency in Parkinson’s Disease

Fagundes

Rieder

Cruz

et al. 2016

Parkinson's Disease

View full text Add to dashboard Cite

Introduction. Deep brain stimulation of the subthalamic nucleus (STN-DBS) in Parkinson's disease (PD) has been linked to a decline in verbal fluency. The decline can be attributed to surgical effects, but the relative contributions of the stimulation parameters are not well understood. This study aimed to investigate the impact of the frequency of STN-DBS on the performance of verbal fluency tasks in patients with PD. Methods. Twenty individuals with PD who received bilateral STN-DBS were evaluated. Their performances of verbal fluency tasks (semantic, phonemic, action, and unconstrained fluencies) upon receiving low-frequency (60 Hz) and high-frequency (130 Hz) STN-DBS were assessed. Results. The performances of phonemic and action fluencies were significantly different between low- and high-frequency STN-DBS. Patients showed a decrease in these verbal fluencies for high-frequency STN-DBS. Conclusion. Low-frequency STN-DBS may be less harmful to the verbal fluency of PD patients.

show abstract

Section: Introductionmentioning

confidence: 99%

“…The VF tasks activate overlapping areas of the frontal brain regions, but different word retrieval criteria likely activate additional distinct regions [13]. Semantic fluency is thought to be associated with temporal-lobe dysfunction, whereas phonemic fluency is associated with frontal-lobe dysfunction [18].…”

Section: Introductionmentioning

confidence: 99%

Deep Brain Stimulation Frequency of the Subthalamic Nucleus Affects Phonemic and Action Fluency in Parkinson’s Disease

Fagundes

Rieder

Cruz

et al. 2016

Parkinson's Disease

View full text Add to dashboard Cite

show abstract

“…The task requires a strategic search and access to phonological and orthographical information stored in the mental lexicon (Rascovsky, Salmon, Hansen, Thal, & Galasko, 2007). A number of factors underlie performance on the task: neuropsychological factors, psycholinguistic factors, as well as experiential factors (for a review, see Pekkala, 2012). Of the neuropsychological factors underlying the letter fluency task, the role of working memory is crucial, as it provides temporary storage and processing of information necessary to successfully perform the task (e.g., Baddeley, Logie, Bressi, Della Sala, & Spinnler, 1986; Baddeley, Bressi, Della Sala, Logie, & Spinnler, 1991; Bayles, 2003; Rende, Ramsberger, & Miyake, 2002; Rosen & Engle, 1997).…”

Section: Introductionmentioning

confidence: 99%

Lexical retrieval in discourse: An early indicator of Alzheimer’s dementia

Pekkala

Wiener²,

Himali

et al. 2013

Clinical Linguistics & Phonetics

Self Cite

View full text Add to dashboard Cite

We examined the progression of lexical-retrieval deficits in individuals with neuropathologically determined Alzheimer's disease (AD; n = 23) and a comparison group without criteria for AD (n = 24) to determine whether linguistic changes were a significant marker of the disease. Our participants underwent multiple administrations of a neuropsychological battery, with initial administration occurring on average 16 years prior to death. The battery included the Boston Naming Test (BNT), a letter fluency task (FAS), and written description of the Cookie Theft Picture (CTP). Repeated measures analysis revealed that the AD-group showed progressively greater decline in FAS and CTP lexical performance than the comparison group. Cross-sectional time-specific group comparisons indicated that the CTP differentiated performance between the two groups at 7–9 years prior to death and FAS and BNT only at 2–4 years. These results suggest that lexical-retrieval deficits in written discourse serve as an early indicator of AD.

show abstract

“…Each type of verbal fluency task may offer specific information regarding cognition, given that each one requires access to specific lexical and/or semantic representations according to the criteria used. The verbal fluency tasks activate overlapping areas of the frontal brain regions, but different word retrieval criteria likely activate additional distinct regions 16 . Executive dysfunction is the predominant profile of cognitive impairment in patients with PD, and phonemic fluency may be a good type of verbal fluency task to evaluate this population because the executive deficit is associated with frontal-lobe dysfunction 17 .…”

Section: Subthalamic Nucleus Deep Brain Stimulation (Stn-dbs)mentioning

confidence: 99%

“…This instrument offers three main variations: phonemic fluency, semantic fluency, and action or verb fluency 15,16 . Each type of verbal fluency task may offer specific information regarding cognition, given that each one requires access to specific lexical and/or semantic representations according to the criteria used.…”

Section: Subthalamic Nucleus Deep Brain Stimulation (Stn-dbs)mentioning

confidence: 99%

Different outcomes of phonemic verbal fluency in Parkinson’s disease patients with subthalamic nucleus deep brain stimulation

Romann

Beber

Olchik

et al. 2017

Arq. Neuro-Psiquiatr.

View full text Add to dashboard Cite

Subthalamic nucleus deep brain stimulation (STN-DBS) is a surgical technique to treat motor symptoms in patients withParkinson's disease (PD). Studies have shown that STN-DBS may cause a decline in verbal fluency performance. We aimed to verify the effects of STN-DBS on the performance of phonemic verbal fluency in Brazilian PD patients. Sixteen participants were evaluated on the Unified Parkinson's Disease Rating Scale -Part III and for phonemic fluency ("FAS" version) in the conditions of on-and off-stimulation. We identified two different patterns of phonemic verbal fluency outcomes. The results indicate that there may be no expected pattern of effect of bilateral STN-DBS in the phonemic fluency, and patients may present with different outcomes for some reason not well understood.Keywords: Parkinson disease; deep brain stimulation; language; cognition. RESUMOA estimulação cerebral profunda do núcleo subtalâmico (ECP-NST) é uma técnica cirúrgica para tratar sintomas motores na doença de Parkinson (DP). Estudos têm mostrado que ECP-NST pode causar um declínio no desempenho de fluência verbal. O objetivo do estudo foi verificar os efeitos da ECP-NST sobre o desempenho da fluência verbal fonêmica em indivíduos brasileiros com DP. Dezesseis participantes foram avaliados quanto ao desempenho motor (UPDRS-III) e à fluência verbal fonêmica (versão "FAS") nas condições de estimulação ligada e desligada. Identificamos dois padrões diferentes de resultados de fluência verbal fonêmica. Os resultados indicam que pode não haver um padrão esperado de efeito de ECP-NST bilateral na fluência fonêmica, e os pacientes podem apresentar desfechos diferentes de acordo com alguma razão não bem compreendida.Palavras-chave: doença de Parkinson; estimulação encefálica profunda; linguagem; cognição. Subthalamic nucleus deep brain stimulation (STN-DBS)is a procedure used to treat patients with Parkinson's disease (PD) when pharmacological treatment is no longer efficient 1 . It has been proven that DBS suppresses motor symptoms and reduces the total dose of the antiparkinsonian drugs 2,3 . Among the adverse effects of STN-DBS in patients with PD, the postoperative decline in verbal fluency is well documented 4,5,6,7,8,9,10,11 . However, there are fewer studies about the effect of the stimulation per se, comparing on-and off-stimulation conditions 12,13,14 . Longitudinal studies verified a worsening of verbal fluency in the first months after surgery, but an improvement in the later studied months 9 . These authors suggest that this effect of the DBS on the verbal fluency may be due to the micro-lesions caused by the implantation procedure of the electrodes in the STN.The verbal fluency test evaluates the capacity to search and retrieve data stored in long-term memory within a certain category and demonstrates the capacities of

show abstract

Verbal Fluency Tasks and the Neuropsychology of Language

Cited by 17 publications

References 68 publications

Deep Brain Stimulation Frequency of the Subthalamic Nucleus Affects Phonemic and Action Fluency in Parkinson’s Disease

Deep Brain Stimulation Frequency of the Subthalamic Nucleus Affects Phonemic and Action Fluency in Parkinson’s Disease

Lexical retrieval in discourse: An early indicator of Alzheimer’s dementia

Different outcomes of phonemic verbal fluency in Parkinson’s disease patients with subthalamic nucleus deep brain stimulation

Contact Info

Product

Resources

About