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- P. Adorjan, G. Barna,
P. Erdi, and K. Obermayer. A Statistical Neural Field Approach To
Orientation Selectivity.
.
Neurocomputing, 26-27:313-318, 1999.
(FTP Gzipped PostScript, 6 pages, 95 kb)
We apply the recently proposed statistical neural field approach
[Grobler & Barna 1996, Erdi 1998] for modeling orientation selectivity in
the primary visual cortex. Firstly, we demonstrate that the neural field
approach is a powerful tool for modeling neural structures with specific
lateral connections. Secondly, we test in a biologically more plausible way
our hypothesis [Bauer et al. 1997, Adorjan et al. 1998], that orientation
bias and tuning in macaque striate cortex can be generated by the same
lateral interactions. The spiking neural model shows that (i) contrast
invariant tuning emerges, and (ii) the tuning dynamics of the membrane
potential and the firing rate are in accordance with observations which until
now seemed to be contradictory [Celebrini et al. 1993, Pei et al. 1994,
Ringach at al. 1997].
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