TY  - CONF
Y1  - 2011/05//
T2  - 19th meeting of the international society for magnetic resonance in medicine
A1  - Gaglianese, Anna
A1  - Costagli, Mauro
A1  - Bernardi, Giulio
A1  - Sani, Lorenzo
A1  - Ricciardi, Emiliano
A1  - Pietrini, Pietro
PB  - The International Society for Magnetic Resonance in Medicine
UR  - http://eprints.imtlucca.it/2942/
N2  - 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.
AV  - public
ID  - eprints2942
M2  - Montreal, Quebec, Canada
TI  - Conditional granger causality analysis of fMRI data shows a direct connection from LGN to hMT+ bypassing V1
ER  -