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Updated: Feb 12, 2026

Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia
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Developmental conduction aphasia after neonatal stroke.

Gemma B Northam1,2, Sophie Adler1,2, Kathrin C J Eschmann1

  • 1Great Ormond Street Institute of Child Health, Developmental Neurosciences Programme, University College London.

Annals of Neurology
|March 25, 2018
PubMed
Summary
This summary is machine-generated.

Neonatal stroke affecting the dorsal language stream can cause lasting speech repetition deficits, similar to conduction aphasia in adults. Early brain plasticity and contralateral language reorganization may offer protection.

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Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats
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Area of Science:

  • Neuroscience
  • Developmental Neuroscience
  • Neurolinguistics

Background:

  • Conduction aphasia, characterized by speech repetition impairment, is a known consequence of dorsal language stream injury in adults.
  • The effects of similar neonatal brain injuries on language development, particularly speech repetition, remain less understood.

Purpose of the Study:

  • To investigate the long-term language outcomes in individuals who experienced neonatal stroke affecting the dorsal language stream.
  • To compare speech repetition abilities in children with neonatal stroke to matched controls.

Main Methods:

  • Compared language outcomes in 30 term-born individuals with neonatal stroke to 40 matched controls (ages 7-18).
  • Assessed dorsal and/or ventral language stream injury using MRI and diffusion tractography.
  • Determined language lateralization using functional MRI.

Main Results:

  • Left dorsal language stream injury was significantly associated with impaired speech repetition for nonwords and sentences.
  • Most children with repetition deficits maintained left hemisphere language representation.
  • Right hemisphere language dominance correlated with minimal repetition deficits.

Conclusions:

  • Early injury to the dorsal language stream can lead to persistent speech repetition impairments resembling adult conduction aphasia.
  • Language reorganization to the contralateral hemisphere appears to have a protective effect against severe repetition deficits.