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Effects of low-frequency repetitive transcranial magnetic stimulation combined with intensive speech therapy on cerebral blood flow in post-stroke aphasia.
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- Author(s): Hara T;Hara T; Abo M; Kobayashi K; Watanabe M; Kakuda W; Senoo A
- Source:
Translational stroke research [Transl Stroke Res] 2015 Oct; Vol. 6 (5), pp. 365-74. Date of Electronic Publication: 2015 Aug 07.
- Publication Type:
Journal Article; Research Support, Non-U.S. Gov't
- Language:
English
- Additional Information
- Source:
Publisher: Springer Country of Publication: United States NLM ID: 101517297 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1868-601X (Electronic) Linking ISSN: 18684483 NLM ISO Abbreviation: Transl Stroke Res Subsets: MEDLINE
- Publication Information:
Original Publication: New York : Springer
- Subject Terms:
- Abstract:
We provided an intervention to chronic post-stroke aphasic patients using low-frequency repetitive transcranial magnetic stimulation (LF-rTMS) guided by a functional magnetic resonance imaging (fMRI) evaluation of language laterality, combined with intensive speech therapy (ST). We performed a single photon emission-computed tomography (SPECT) scan pre- and post-intervention and investigated the relationship between cerebral blood flow (CBF) and language function. Fifty right-handed chronic post-stroke aphasic patients were enrolled in the study. During their 11-day hospital admission, the patients received a 40-min session of 1-Hz LF-rTMS on the left or right hemisphere, according to language localization identified by the fMRI evaluation, and intensive ST daily for 10 days, except for Sunday. A SPECT scan and language evaluation by the Standard Language Test of Aphasia (SLTA) were performed at the time of admission and at 3 months following discharge. We calculated laterality indices (LIs) of regional CBF (rCBF) in 13 language-related Brodmann area (BA) regions of interest. In patients who received LF-rTMS to the intact right hemisphere (RH-LF-rTMS), the improvement in the total SLTA score was significantly correlated with the pre- and post-intervention change of LI (ΔLI) in BA44. In patients who received LF-rTMS to the lesional left hemisphere (LH-LF-rTMS), this association was not observed. Analyses of the SLTA subscales and rCBF ΔLI demonstrated that in the RH-LF-rTMS group, the SLTA Speaking subscale scores were significantly correlated with ΔLIs in BA11, 20, and 21, and the SLTA Writing subscale scores were significantly correlated with ΔLIs in BA6 and 39. Conversely, in the LH-LF-rTMS group, the SLTA Speaking subscale scores were correlated with ΔLI in BA10, and the SLTA Reading subscale scores were significantly correlated with ΔLIs in BA13, 20, 22, and 44. Our results suggest the possibility that fMRI-guided LF-rTMS combined with intensive ST may affect CBF and contribute to the improvement of language function of post-stroke aphasic patients. LF-rTMS to the non-lesional and lesional hemispheres showed a difference in the associations between language performance and CBF. The results indicate that more effective rTMS intervention needs to be explored for patients who show right hemisphere language activation in an fMRI language evaluation.
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- Publication Date:
Date Created: 20150807 Date Completed: 20160607 Latest Revision: 20181113
- Publication Date:
20221213
- Accession Number:
10.1007/s12975-015-0417-7
- Accession Number:
26245774
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