Cortico-cortical interactions in spatial attention: A combined ERP/TMS study.


To gain insight into the neural basis of visual attention, we combined transcranial magnetic stimulation (TMS) and event-related potentials (ERPs) during a visual search task. Single-pulse TMS over right posterior parietal cortex (rPPC) delayed response times to targets during conjunction search, and this behavioral effect had a direct ERP correlate. The early phase of the N2pc component that reflects the focusing of attention onto target locations in a search display was eliminated over the right hemisphere when TMS was applied there but was present when TMS was delivered to a control site (vertex). This finding demonstrates that rPPC TMS interferes with attentional selectivity in remote visual areas.

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@article{Fuggetta2006CorticocorticalII, title={Cortico-cortical interactions in spatial attention: A combined ERP/TMS study.}, author={Giorgio Fuggetta and Enea Francesco Pavone and Vincent Walsh and Monika Kiss and Martin Eimer}, journal={Journal of neurophysiology}, year={2006}, volume={95 5}, pages={3277-80} }