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Updated: May 17, 2026
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A Versatile Murine Model of Subcortical White Matter Stroke for the Study of Axonal Degeneration and White Matter Neurobiology
Published on: March 17, 2016
Longitudinal plasticity across the neural axis in acute stroke
William Huynh1, Steve Vucic, Arun V Krishnan
1Neuroscience Research Australia, Randwick, New South Wales, Australia. w.huynh@neura.edu.au
Neurorehabilitation and Neural Repair
|October 19, 2012
Summary
Stroke recovery involves brain plasticity. This study shows reduced short-interval intracortical inhibition (SICI) in both brain hemispheres after stroke, suggesting adaptive cortical reorganization promotes recovery.
Area of Science:
- Neuroscience
- Neurorehabilitation
Background:
- Understanding post-stroke neuroplasticity is crucial for optimizing brain stimulation therapies.
- Timing and patient selection for neuromodulation depend on plasticity insights.
Purpose of the Study:
- To characterize the temporal progression of central and peripheral neuroplastic changes within 3 months post-stroke.
- To explore the clinical implications of these neuroplastic alterations.
Main Methods:
- Longitudinal assessment of 31 acute stroke patients.
- Utilized transcranial magnetic stimulation (TMS) for central excitability.
- Measured peripheral nerve excitability and conducted clinical assessments.
Main Results:
- Hyperacute phase (<7 days) showed significantly reduced short-interval intracortical inhibition (SICI) in both lesioned and contralesional hemispheres compared to controls.
- Significant alterations in motor axon properties were observed in the affected limb.
- SICI remained suppressed at follow-up, correlating with clinical improvement.
Conclusions:
- Identified bilateral plastic changes across the neural axis in acute stroke patients.
- These changes are proposed to be adaptive responses.
- Persistent bilateral SICI reduction may facilitate stroke recovery via cortical reorganization.
