Origins of feature selectivities and maps in the mammalian primary visual cortex
Trichur R Vidyasagar, Ulf T Eysel
TRENDS IN NEUROSCIENCES | ELSEVIER SCIENCE LONDON | Published : 2015
A common feature of the mammalian striate cortex is the arrangement of 'orientation domains' containing neurons preferring similar stimulus orientations. They are arranged as spokes of a pinwheel that converge at singularities known as 'pinwheel centers'. We propose that a cortical network of feedforward and intracortical lateral connections elaborates a full set of optimum orientations from geniculate inputs that show a bias to stimulus orientation and form a set of two or a small number of 'Cartesian' coordinates. Because each geniculate afferent carries signals only from one eye and its receptive field (RF) is either ON or OFF center, the network constructs also ocular dominance columns a..View full abstract
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Awarded by Australian Research Council
Awarded by German Research Foundation (DFG)
The work was supported by grants from the Australian Research Council (LX0453702, DP0986247 and DP120103078) and by a grant (SFB 874, A2) from the German Research Foundation (DFG). We thank Dr Zoltan Kisvarday for discussions and Dr Sivaram Viswanathan for discussions and help in preparing the figures.