Asymmetry of parietal interhemispheric connections in humans

Koch, Giacomo, Cercignani, Mara ORCID: https://orcid.org/0000-0002-4550-2456, Bonni, Sonia, Giacobbe, Viola, Bucchi, Giulia, Versace, Viviana, Caltagirone, Carlo and Bozzali, Marco 2011. Asymmetry of parietal interhemispheric connections in humans. Journal of Neuroscience 31 (24) , pp. 8967-8975. 10.1523/jneurosci.6567-10.2011

Full text not available from this repository.

Abstract

Visuospatial abilities are preferentially mediated by the right hemisphere. Although this asymmetry of function is thought to be due to an unbalanced interaction between cerebral hemispheres, the underlying neurophysiological substrate is still largely unknown. Here, using a method of trifocal transcranial magnetic stimulation, we show that the right, but not left, human posterior parietal cortex exerts a strong inhibitory activity over the contralateral homologous area by a short-latency connection. We also clarify, using diffusion-tensor magnetic resonance imaging, that such an interaction is mediated by direct transcallosal projections located in the posterior corpus callosum. We argue that this anatomo-functional network may represent a possible neurophysiological basis for the ongoing functional asymmetry between parietal cortices, and that its damage could contribute to the clinical manifestations of neglect.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Psychology Cardiff University Brain Research Imaging Centre (CUBRIC)
Publisher:	Society for Neuroscience
ISSN:	1529-2401
Last Modified:	09 Nov 2022 10:26
URI:	https://orca.cardiff.ac.uk/id/eprint/139503

Citation Data

Cited 112 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item