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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Nyffeler, Thomas Müri, René M. Cazzoli, Dario Hess, Christian W. |
| Description | Country affiliation: Switzerland Author Affiliation: Nyffeler T ( Perception and Eye Movement Laboratory, Department of Neurology, University Hospital, University of Berne, Freiburgstrasse 10, 3010 Berne, Switzerland.) |
| Abstract | BACKGROUND AND PURPOSE: Visual neglect is a frequent disability in stroke and adversely affects mobility, discharge destination, and length of hospital stay. It is assumed that its severity is enhanced by a released interhemispheric inhibition from the unaffected toward the affected hemisphere. Continuous theta burst transcranial magnetic stimulation (TBS) is a new inhibitory brain stimulation protocol which has the potential to induce behavioral effects outlasting stimulation. We aimed to test whether parietal TBS over the unaffected hemisphere can induce a long-lasting improvement of visual neglect by reducing the interhemispheric inhibition. METHODS: Eleven patients with left-sided visual neglect attributable to right hemispheric stroke were tested in a visual perception task. To evaluate the specificity of the TBS effect, 3 conditions were tested: 2 TBS trains over the left contralesional posterior parietal cortex, 2 trains of sham stimulation over the contralesional posterior parietal cortex, and a control condition without any intervention. To evaluate the lifetime of repeated trains of TBS in 1 session, 4 trains were applied over the contralesional posterior parietal cortex. RESULTS: Two TBS trains significantly increased the number of perceived left visual targets for up to 8 hours as compared to baseline. No significant improvement was found with sham stimulation or in the control condition without any intervention. The application of 4 TBS trains significantly increased the number of perceived left targets up to 32 hours. CONCLUSIONS: The new approach of repeating TBS at the same day may be promising for therapy of neglect. |
| ISSN | 00392499 |
| e-ISSN | 15244628 |
| Journal | Stroke |
| Issue Number | 8 |
| Volume Number | 40 |
| Language | English |
| Publisher | Lippincott Williams & Wilkins (on behalf of the American Heart Association) |
| Publisher Date | 2009-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Parietal Lobe Physiology Theta Rhythm Transcranial Magnetic Stimulation Vision Disorders Physiopathology Therapy Reaction Time Time Factors Visual Perception Comparative Study Research Support, Non-u.s. Gov't Discipline Cardiology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cardiology and Cardiovascular Medicine Neuroscience Advanced and Specialized Nursing Neurology (clinical) |
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