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Direct evidence for a parietal-frontal pathway subserving spatial awareness in humans.

Abstract : Intraoperative electrical stimulation, which temporarily inactivates restricted regions during brain surgery, can map cognitive functions in humans with spatiotemporal resolution unmatched by other methods. Using this technique, we found that stimulation of the right inferior parietal lobule or the caudal superior temporal gyrus, but not of its rostral portion, determined rightward deviations on line bisection. However, the strongest shifts occurred with subcortical stimulation. Fiber tracking identified the stimulated site as a section of the superior occipitofrontal fasciculus, a poorly known parietal-frontal pathway. These findings suggest that parietal-frontal communication is necessary for the symmetrical processing of the visual scene.
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https://www.hal.inserm.fr/inserm-00000088
Contributor : Paolo Bartolomeo <>
Submitted on : Thursday, March 30, 2006 - 3:01:27 PM
Last modification on : Monday, December 16, 2019 - 10:54:02 AM

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Michel Thiebaut de Schotten, Marika Urbanski, Hugues Duffau, Emmanuelle Volle, Richard Lévy, et al.. Direct evidence for a parietal-frontal pathway subserving spatial awareness in humans.. Science, American Association for the Advancement of Science, 2005, 309, pp.2226-8. ⟨10.1126/science.1116251⟩. ⟨inserm-00000088⟩

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