Ted Hesselroth and Klaus Schulten.
Receptive field and feature map formation in the primary visual
cortex via hebbian learning with inhibitory feedback.
arXiv:q-bio.NC/0505011v1, 2005.
HESS2005A-KS
A linear neural network is proposed for mamalian vision system in which back-
ward connections from the primary visual cortex (V1) to the lateral geniculate
nucleus play a key role. The backward connections control the flow of information
from the LGN to V1 in such a way as to maximize the rate of transfer of informa-
tion from the LGN to V1. The application of hebbian learning to the forward and
backward connections causes the formation of receptive fields which are sensitive
to edges, bars, and spatial frequencies of preferred orientations. Receptive field
types in V1 are shown to depend on the density of the afferent connections in the
LGN. Orientational preferences are organized in the primary visual cortex by the
application of lateral interactions during the learning phase. Change in the size of
the eye between the immature and mature animal is shown be an important factor
in the development of V1 organization. The orgainization of the mature network
is compared to that found in the macaque monkey by several analytical tests.
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