Time course of blood oxygenation level–dependent signal response after theta burst transcranial magnetic stimulation of the frontal eye field
Autor: | Mathias Lüthi, R. von Wartburg, Pascal Wurtz, Thomas Nyffeler, Roland Wiest, C. W. Hess, Tobias Pflugshaupt, René M. Müri, Silvia Chaves, Thomas Dierks, Daniela Hubl, Werner Strik |
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Rok vydání: | 2008 |
Předmět: |
Adult
Male Supplementary eye field Time Factors genetic structures medicine.medical_treatment Stimulation Eye behavioral disciplines and activities Brain mapping Functional Laterality Image Processing Computer-Assisted Reaction Time Saccades medicine Humans Prefrontal cortex Brain Mapping medicine.diagnostic_test General Neuroscience Magnetic Resonance Imaging Transcranial Magnetic Stimulation Parietal eye Frontal Lobe Oxygen Transcranial magnetic stimulation Functional imaging nervous system Female Psychology Functional magnetic resonance imaging Neuroscience psychological phenomena and processes |
Zdroj: | Neuroscience. 151:921-928 |
ISSN: | 0306-4522 |
Popis: | The aim of the current study was to examine the effect of theta burst repetitive transcranial magnetic stimulation (rTMS) on the blood oxygenation level-dependent (BOLD) activation during repeated functional magnetic resonance imaging (fMRI) measurements. Theta burst rTMS was applied over the right frontal eye field in seven healthy subjects. Subsequently, repeated fMRI measurements were performed during a saccade-fixation task (block design) 5, 20, 35, and 60 min after stimulation. We found that theta burst rTMS induced a strong and long-lasting decrease of the BOLD signal response of the stimulated frontal eye field at 20 and 35 min. Furthermore, less pronounced alterations of the BOLD signal response with different dynamics were found for remote oculomotor areas such as the left frontal eye field, the pre-supplementary eye field, the supplementary eye field, and both parietal eye fields. Recovery of the BOLD signal changes in the anterior remote areas started earlier than in the posterior remote areas. These results show that a) the major inhibitory impact of theta burst rTMS occurs directly in the stimulated area itself, and that b) a lower effect on remote, oculomotor areas can be induced. |
Databáze: | OpenAIRE |
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