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Related Experiment Video

Updated: Oct 23, 2025

Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia
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Cortical microstructural changes associated with treated aphasia recovery.

Allen J Chang1, Janina Wilmskoetter2,3, Julius Fridriksson4

  • 1College of Graduate Studies, Neuroscience Institute, Medical University of South Carolina, Charleston, South Carolina, USA.

Annals of Clinical and Translational Neurology
|August 18, 2021
PubMed
Summary
This summary is machine-generated.

Language recovery in post-stroke aphasia is linked to structural brain changes. Improved naming accuracy correlates with enhanced microstructural integrity in specific left hemisphere language regions.

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Area of Science:

  • Neuroscience
  • Neurolinguistics
  • Medical Imaging

Background:

  • Aphasia, a language disorder, often follows stroke.
  • Understanding the neural mechanisms of language recovery is crucial for effective treatment.

Purpose of the Study:

  • To investigate the link between structural brain changes and language recovery in post-stroke aphasia.
  • To determine if treatment-induced improvements in naming correlate with cortical reorganization.

Main Methods:

  • A retrospective longitudinal study of 26 individuals with chronic stroke-induced aphasia.
  • Utilized comprehensive language assessments and diffusion MRI (diffusional kurtosis imaging).
  • Employed elastic net statistical models controlling for baseline factors.

Main Results:

  • Improved naming accuracy was associated with increased microstructural integrity in the left posterior superior temporal gyrus.
  • Enhanced integrity in the left middle and inferior temporal gyri correlated with reduced semantic paraphasias.
  • These structural changes were specific to language-related brain regions.

Conclusions:

  • Structural brain changes in preserved left hemisphere regions support language recovery in aphasia.
  • These findings highlight the role of cortical reorganization in post-stroke language rehabilitation.