A setup for administering TMS to medial and lateral cortical areas during whole-brain FMRI recording
| Autor: | Chris J.G. Bakker, Erwin J. Bakker, Mirjam Bloemendaal, Sebastiaan F. W. Neggers, Dennis W. J. Klomp, Sven Bestmann, Iris E. C. Sommer, Antoin D. de Weijer |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Adult
Male Physiology Brain activity and meditation Computer science medicine.medical_treatment Posterior parietal cortex Supramarginal gyrus Physiology (medical) Cortex (anatomy) Image Processing Computer-Assisted medicine Humans Cerebral Cortex Echo-Planar Imaging Human brain Magnetic Resonance Imaging Transcranial Magnetic Stimulation Oxygen Transcranial magnetic stimulation medicine.anatomical_structure Visual cortex Neurology Linear Models Female Neurology (clinical) Neuroscience 170 000 Motivational & Cognitive Control Motor cortex |
| Zdroj: | Journal of Clinical Neurophysiology, 31, 5, pp. 474-487 Journal of Clinical Neurophysiology, 31, 474-487 |
| ISSN: | 0736-0258 |
| Popis: | Item does not contain fulltext SUMMARY: Stimulating brain areas with transcranial magnetic stimulation (TMS) while concurrently and noninvasively recording brain activity changes through functional MRI enables a new range of investigations about causal interregional interactions in the human brain. However, standard head-coil arrangements for current methods for concurrent TMS-functional MRI somewhat restrict the cortical brain regions that can be targeted with TMS because space in typical MR head coils is limited. Another limitation for concurrent TMS-functional MRI approaches concerns the estimation of the precise stimulation site, which can limit the interpretation of the activity changes induced by TMS and increase the variability of the stimulation effects. Here, we present a novel approach using flexible MR receiver coils, allowing for stimulation of a large part of the cortex including more lateral areas. Furthermore, we present a fast and economical method to determine the precise location of the stimulation coil during scanning. This point-based registration method can accurately compute, during scanning, where TMS pulses are delivered. We validated this approach by stimulating medial (M1) and more lateral (dorsal part of the supramarginal gyrus) brain areas concurrently with functional MRI. Activation close to but not directly at the stimulated location and in distal areas connected to the targeted site was observed. This study provides a proof of concept that TMS of medial and lateral brain areas is feasible without significantly compromising brain coverage and that one can precisely determine the exact coil location inside the bore to verify targeting of brain areas. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|