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Title: First-order analysis of optical flow in monkey brain
Authors: Orban, Guy
Lagae, Lieven
Verri, A
Raiguel, Steven
Xiao, D
Maes, Hugo
Torre, V #
Issue Date: May-1992
Publisher: Natl acad press
Series Title: Proceedings of the National Academy of Sciences of the United States of America vol:89 issue:7 pages:2595-9
Abstract: Optical flow is a rich source of information about the three-dimensional motion and structure of the visual environment. Little is known of how the brain derives this information. One possibility is that it analyzes first-order elementary components of optical flow, such as expansion, rotation, and shear. Using a combination of physiological recordings and modeling techniques, we investigated the contribution of the middle superior temporal area (MST), a third-order cortical area in the dorsal visual pathway that receives inputs from the medial temporal area (MT). The results show (i) that MST cells, but not MT cells, are selective for elementary flow components (EFCs) alone or their combination with translation, (ii) that MST cells selective for an EFC do not extract this component from a more complex motion pattern, and (iii) that position invariance as observed in MST is compatible with an input arrangement from MT cells matching the selectivity of MST neurons.
URI: 
ISSN: 0027-8424
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Research Group Neurophysiology
Brain & Metabolism Section (-)
Teacher Training, Faculty of Kinesiology and Rehabilitation Sciences
# (joint) last author

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