Evidence map›Paper›PMID 37482994›Full record

SynthesisJournal of Alzheimer's disease : JAD2023

Phonological and Semantic Fluency in Alzheimer's Disease: A Systematic Review and Meta-Analysis.

Rocio Olmos-Villaseñor, Consuelo Sepulveda-Silva, Teresa Julio-Ramos, Eduardo Fuentes-Lopez, David Toloza-Ramirez, Rodrigo A Santibañez, David A Copland, Carolina Mendez-Orellana

Open access · bronzeAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of Alzheimer's disease : JAD, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 3 pooled it
5.8field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 3 syntheses or guidelines pooled it, 26 citations in OpenAlex.

  1. The effect of exercise on the improvement of verbal fluency, spatial working memory, and the three major executive functions in elderly alzheimer's patients: a systematic review and meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Pooled it
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  8. Italian intersocietal recommendations for restructuring the diagnostic-therapeutic pathway for the implementation and appropriate use of anti-amyloid monoclonal antibodies in Alzheimer's disease.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Review
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  10. Normative Data for the Famous People Fluency Test in the Adult French-Quebec Population and Validation Study in Mild Cognitive Impairment and Alzheimer's Disease.Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 2 countries.

Rocio Olmos-VillaseñorSpeech and Language Therapy School, Health Sciences Department, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile.
Consuelo Sepulveda-SilvaSpeech and Language Therapy School, Health Sciences Department, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile.
Teresa Julio-RamosLaboratory of Language Rehabilitation and Stimulation (LARES), Speech and Language Therapy School, Health Sciences Department, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile.
Eduardo Fuentes-LopezSpeech and Language Therapy School, Health Sciences Department, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile.
David Toloza-RamirezExercise and Rehabilitation Sciences Institute, School of Speech Therapy, Faculty of Rehabilitation Sciences, Universidad Andres Bello, Santiago, Chile.
Rodrigo A SantibañezNeurology Department, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
David A CoplandQueensland Aphasia Research Centre, School of Health and Rehabilitation Sciences, University of Queensland, Brisbane, Australia.
Carolina Mendez-OrellanaSpeech and Language Therapy School, Health Sciences Department, Faculty of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile.
Pontificia Universidad Católica de Chile · CLThe University of Queensland · AUUniversidad Andrés Bello · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSemantic and Phonological fluency (SF and PF) are routinely evaluated in patients with Alzheimer's disease (AD). There are disagreements in the literature regarding which fluency task is more affected while developing AD. Most studies focus on SF assessment, given its connection with the temporoparietal amnesic system. PF is less reported, it is related to working memory, which is also impaired in probable and diagnosed AD. Differentiating between performance on these tasks might be informative in early AD diagnosis, providing an accurate linguistic profile.

objectiveCompare SF and PF performance in healthy volunteers, volunteers with probable AD, and patients with AD diagnosis, considering the heterogeneity of age, gender, and educational level variables.

methodsA total of 8 studies were included for meta-analysis, reaching a sample size of 1,270 individuals (568 patients diagnosed with AD, 340 with probable AD diagnosis, and 362 healthy volunteers).

resultsThe three groups consistently performed better on SF than PF. When progressing to a diagnosis of AD, we observed a significant difference in SF and PF performance across our 3 groups of interest (p = 0.04). The age variable explained a proportion of this difference in task performance across the groups, and as age increases, both tasks equally worsen.

conclusionThe performance of SF and PF might play a differential role in early AD diagnosis. These tasks rely on partially different neural bases of language processing. They are thus worth exploring independently in diagnosing normal aging and its transition to pathological stages, including probable and diagnosed AD.

Indexed as

Alzheimer DiseaseSemanticsHumansLinguisticsNeuropsychological TestsVerbal BehaviorAlzheimer’s diseasephonemic fluencysemantic fluencyverbal fluency

Identifiers

PMID37482994
PMCPMC10578227
OpenAlexW4384662050

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.