Logo eprints

Conditional granger causality analysis of fMRI data shows a direct connection from LGN to hMT+ bypassing V1

Gaglianese, Anna and Costagli, Mauro and Bernardi, Giulio and Sani, Lorenzo and Ricciardi, Emiliano and Pietrini, Pietro Conditional granger causality analysis of fMRI data shows a direct connection from LGN to hMT+ bypassing V1. In: 19th meeting of the international society for magnetic resonance in medicine, 7-13 May 2011, Montreal, Quebec, Canada (2011)

[img]
Preview
 PDF
Download (422kB) | Preview

Abstract

The human middle temporal complex (hMT+) is devoted to motion perception. To determine whether motion-related neural information may reach hMT+ directly from the thalamus, by-passing the primary visual cortex (V1), we measured effective connectivity in an optic flow fMRI experiment in humans. Conditional Granger Causality analysis was employed to measure direct influences between the lateral geniculate nucleus (LGN) and hMT+, discarding indirect effects mediated by V1. Results indicated the existence of a bilateral alternative pathway for visual motion processing that allows for a direct flow of information from LGN to hMT+. This direct link may play a role in blindsight.

Item Type: Conference or Workshop Item (Lecture)
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Research Area: Computer Science and Applications
Depositing User: Users 72 not found.
Date Deposited: 01 Dec 2015 12:42
Last Modified: 13 Sep 2016 09:53
URI: http://eprints.imtlucca.it/id/eprint/2942

Actions (login required)

Edit Item Edit Item
EPrints Logo
IMT Institutional Repository is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.