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Article Publish Status: FREE
Abstract Title:

Intensive therapy induces contralateral white matter changes in chronic stroke patients with Broca's aphasia.

Abstract Source:

Brain Lang. 2014 Sep ;136:1-7. Epub 2014 Jul 18. PMID: 25041868

Abstract Author(s):

Catherine Y Wan, Xin Zheng, Sarah Marchina, Andrea Norton, Gottfried Schlaug

Article Affiliation:

Catherine Y Wan

Abstract:

Using a pre-post design, eleven chronic stroke patients with large left hemisphere lesions and nonfluent aphasia underwent diffusion tensor imaging and language testing before and after receiving 15 weeks of an intensive intonation-based speech therapy. This treated patient group was compared to an untreated patient group (n=9) scanned twice over a similar time period. Our results showed that the treated group, but not the untreated group, had reductions in fractional anisotropy in the white matter underlying the right inferior frontal gyrus (IFG, pars opercularis and pars triangularis), the right posterior superior temporal gyrus, and the right posterior cingulum. Furthermore, we found that greater improvements in speech production were associated with greater reductions in FA in the right IFG (pars opercularis). Thus, our findings showed that an intensive rehabilitation program for patients with nonfluent aphasia led to structural changes in the right hemisphere, which correlated with improvements in speech production.

Study Type : Human Study

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Sayer Ji
Founder of GreenMedInfo.com

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