Diagnosis and Treatment of Post-Stroke and Progressive Aphasias

A special issue of Brain Sciences (ISSN 2076-3425). This special issue belongs to the section "Neurolinguistics".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 546

Special Issue Editors


E-Mail Website
Guest Editor
Communication Sciences and Disorders, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
Interests: aphasia; aphasia treatment; neuroimaging; cognitive science

E-Mail Website
Guest Editor
FSU College of Communication and Information, School of Communication Science and Disorders, Florida State University, Tallahassee, FL, USA
Interests: cognitive neuroscience; aphasia; neuroimaging; neurolinguistics

Special Issue Information

Dear Colleagues,

Aphasia is a common language disorder caused by neurological diseases. The scientific history of aphasia began over 100 years ago, during the “golden age” of neurology, with Broca’s discoveries, raising interest in the more precise localization of brain disorders. Significant clinical contributions and notable advances in theoretical formulation were made during the first few decades of the 19th century, followed by the 20th century advances in neuroimaging and the most recent data-driven approaches to deliver better classification and lesion-based predictions in post-stroke patients. Lately, the study of aphasia has expanded to include a newly discovered clinical entity, primary progressive aphasia (PPA), which, although broadening our knowledge about aphasia phenotypes, extended the discrepancy between clinical impressions and classification systems among language disorders. Although a huge number of individuals with post-stroke aphasia can have improved outcomes with behavioral therapy, there is a need to develop new and emerging technologies to improve the quality of life for patients who suffer from both stroke-induced and primary progressive aphasia, and to facilitate early diagnoses and focusing on slowing down the progression in PPA.

This Special Issue will primarily address (i) the clinical categorization of patients with aphasia, (ii) highlight advances in the diagnosis and treatment of aphasia, and finally (iii) define the best modalities to include imaging techniques and machine-learning approaches to facilitate and predict outcomes. The aims of this Special Issue are to offer more personalized and granular predictive modeling of rehabilitation, understand the hidden neural markers of vulnerability and disease, and characterize the anatomical substrate of aphasia.

Dr. Sigfus Kristinsson
Dr. Sladjana Lukic
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Brain Sciences is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • post-stroke aphasia
  • primary progressive aphasia
  • lesion–symptom mapping
  • neuroimaging
  • speech and language treatment
  • neural markers

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

17 pages, 1991 KB  
Article
Lesion-Symptom Mapping of Acute Speech Deficits After Left vs. Right Hemisphere Stroke: A Retrospective Analysis of NIHSS Best Language Scores and Clinical Neuroimaging
by Nilofar Sherzad, Roger Newman-Norlund, John Absher, Leonardo Bonilha, Christopher Rorden, Julius Fridriksson and Sigfus Kristinsson
Brain Sci. 2025, 15(12), 1329; https://doi.org/10.3390/brainsci15121329 (registering DOI) - 13 Dec 2025
Abstract
Background: Recent research suggests that damage to right hemisphere regions homotopic to the left hemisphere language network affects language abilities to a greater extent than previously thought. However, few studies have investigated acute disruption of language after lesion to the right hemisphere. [...] Read more.
Background: Recent research suggests that damage to right hemisphere regions homotopic to the left hemisphere language network affects language abilities to a greater extent than previously thought. However, few studies have investigated acute disruption of language after lesion to the right hemisphere. Here, we examined lesion correlates of acute speech deficits following left and right hemisphere ischemic stroke to clarify the neural architecture underlying early language dysfunction. Methods: We retrospectively analyzed 410 patients (225 left, 185 right hemisphere lesions) from the Stroke Outcome Optimization Project dataset. Presence and severity of speech deficits was measured using the National Institute of Health Stroke Scale Best Language subscore within 48 h of onset. Manual lesion masks were derived from clinical MRI scans and normalized to MNI space. Lesion-symptom mapping was conducted using voxelwise and region-of-interest analyses with permutation correction (5000 iterations; p < 0.05), controlling for total lesion volume. Results: Speech deficits were observed in 53.7% of the cohort (58.2% left, 48.1% right hemisphere lesions). In the full sample, the presence of speech deficits was associated with bilateral subcortical and perisylvian damage, including the external and internal capsules, insula, putamen, and superior fronto-occipital fasciculus. Severity of speech deficits localized predominantly to left hemisphere structures, with peak associations in the external capsule (Z = 6.39), posterior insula (Z = 5.64), and inferior fronto-occipital fasciculus (Z = 5.43). In the right hemisphere cohort, the presence and severity of speech deficits were linked to homologous regions, including the posterior insula (Z = 3.70) and external capsule (Z = 3.63), although with smaller effect sizes relative to the left hemisphere cohort. Right hemisphere lesions resulted in milder deficits despite larger lesion volumes compared with left hemisphere lesions. Conclusions: Acute speech impairment following right hemisphere stroke is associated with damage to a homotopic network encompassing perisylvian cortical and subcortical regions analogous to the dominant left hemisphere language network. These findings demonstrate that damage to the right hemisphere consistently results in acute speech deficits, challenging the traditional left-centric view of post-stroke speech impairment. These results have important implications for models of bilateral language representation and the neuroplastic mechanisms supporting language recovery. Full article
(This article belongs to the Special Issue Diagnosis and Treatment of Post-Stroke and Progressive Aphasias)
Show Figures

Figure 1

Back to TopTop