Evidence map›Paper›PMID 41550450›Full record

ArticleCase reports in neurology

Effect of Transcranial Direct Current Stimulation on Motor Speech in Nonfluent Primary Progressive Aphasia: A Case Report.

Yoshihiro Ohashi, Satoko Koganemaru, Fumiko Oshima

Abstract readCase Reports
In one paragraph

Article in Case reports in neurology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

3 authors.

Yoshihiro OhashiDepartment of Medical Welfare, Department of Speech and Hearing, Faculty of Health Sciences, Kyoto Koka Women's University, Kyoto, Japan.
Satoko KoganemaruHuman Brain Research Center, Kyoto University, Kyoto, Japan.
Fumiko OshimaDepartment of Rehabilitation, Japanese Red Cross Society Suwa Hospital, Suwa, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Primary progressive aphasia (PPA) is a neurodegenerative disorder that causes a gradual decline in language function. While combining transcranial direct current stimulation (tDCS) with rehabilitation of speech and language disorders (SLD rehab) has shown promise, its effect on motor speech disorders such as dysarthria and apraxia of speech (AOS), common in nonfluent variant PPA (nfvPPA), has been unclear. Case Presentation: This study used an N-of-1 crossover design to investigate the effects of SLD rehab-tDCS on articulation and vocalization in a 77-year-old male patient with nfvPPA, dysarthria, and AOS. In the intervention phase, intervention A (anodal tDCS over the left inferior frontal gyrus from the precentral regions, combined with SLD rehab) was compared with intervention B (sham stimulation with SLD rehab) across both short-term (single session) and long-term (12 sessions over 6 weeks) phases, with intervention A preceding B. In both the short- and long-term phases, the assessments of articulation and vocalization showed greater improvement following intervention A. The long-term intervention also led to improvements in general aphasia severity. Furthermore, brain perfusion SPECT imaging revealed increased blood flow in the left fronto-subcortical network. Conclusions: These preliminary findings from a single case suggest that SLD rehab-tDCS may have the potential to improve not only language but also speech motor functions in nfvPPA.

Indexed as

Nonfluent primary progressive aphasiaNonfluent variant of primary progressive aphasiaRehabilitation of speech and language disordersTranscranial direct current stimulation

Identifiers

PMID41550450
PMCPMC12810973

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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.