Journal
BRAIN RESEARCH REVIEWS
Volume 52, Issue 1, Pages 183-192Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.brainresrev.2006.01.008
Keywords
transcranial magnetic stimulation; electroencephalography; TMS-evoked potential; reactivity; connectivity
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Electroencephalo graphic (EEG) responses measured simultaneously with transcranial magnetic stimulation (TMS) have opened a new window into the human nervous system. The combined use of TMS and EEG (TMS-EEG) provides a means for the detailed study of the reactivity of any cortical region in the intact brain; also the reactivities of non-motor cortical areas related with higher-order functions are now appreciable. A recent epochal finding concerning cortical reactivity is that neuronal activation is induced with remarkably low stimulation intensities. This knowledge is significant when optimizing experimental setups for maximal patient safety. Stimulation of different cortical areas evokes different patterns of remote EEG activity, confirming the viability of TMS-EEG for the study of corticocortical connections. In this review, we expand on these and other notable findings related with TMS-EEG. We discuss the possibilities of the technique for the study of cortical reactivity and connectivity. We show that TMS-EEG allows the study of interhemispheric connections with high spatiotemporal specificity and the assessment of cortical reactivity with excellent sensitivity, (c) 2006 Elsevier B.V. All rights reserved.
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