Presentation 1999/10/21
Formation of orientation preference map in visual cortex
H. Nakamura, S. Inawashiro,
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Abstract(in English) We study the formation of orientation selectivity map in the primary visual area of the brain using two-layered neural network. A cluster learning rule is used together with ordinary Hebbian rule. Previously only the Monte Carlo method have given the appromate solution of the nonlinear equations. We have succeeded in solving the simultaneous nonlinear equations directly by iterations. In iterations, parameters for inhititions are gradually increased to desired values. The orientation selectivity map thus obtained is in agreement with the results of experiments. Our gradual inhibition method gives one of exact solutions efficiently, and it will be applied to computations in a large-scaled system.
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Keyword(in English) visual area / neural network / orientation selectivity / singularity / learning rule / inhibitory neuron
Paper # NC99-46
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Committee NC
Conference Date 1999/10/21(1days)
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Registration To Neurocomputing (NC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Formation of orientation preference map in visual cortex
Sub Title (in English)
Keyword(1) visual area
Keyword(2) neural network
Keyword(3) orientation selectivity
Keyword(4) singularity
Keyword(5) learning rule
Keyword(6) inhibitory neuron
1st Author's Name H. Nakamura
1st Author's Affiliation Department of Computer Science, College of Enginieering, Nihon University()
2nd Author's Name S. Inawashiro
2nd Author's Affiliation Department of Computer Science, College of Enginieering, Nihon University
Date 1999/10/21
Paper # NC99-46
Volume (vol) vol.99
Number (no) 382
Page pp.pp.-
#Pages 8
Date of Issue