Title: The Retinotopy of Visual Spatial Attention
Authors: Tootell, R.B.H. ×
Hadjikhani, N.
Hall, E.K.
Marrett, S.
Vanduffel, Wim
Vaughan, J.T.
Dale, A.M. #
Issue Date: Dec-1998
Publisher: Cell Press
Series Title: Neuron vol:21 issue:6 pages:1409-1422
Abstract: We used high-field (3T) functional magnetic resonance imaging (fMRI) to label cortical activity due to visual spatial attention, relative to flattened cortical maps of the retinotopy and visual areas from the same human subjects. In the main task, the visual stimulus remained constant, but covert visual spatial attention was varied in both location and load. In each of the extrastriate retinotopic areas, we found MR increases at the representations of the attended target. Similar but smaller increases were found in V1. Decreased MR levels were found in the same cortical locations when attention was directed at retinotopically different locations. In and surrounding area MT+, MR increases were lateralized but not otherwise retinotopic. At the representation of eccentricities central to that of the attended targets, prominent MR decreases occurred during spatial attention.
ISSN: 0896-6273
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group Neurophysiology
× corresponding author
# (joint) last author

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