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A model of the summation pools within the layer 4 (area 17)
Department of Computer Science and Engineering, Mälardalen University.
KTH, Skolan för datavetenskap och kommunikation (CSC), Numerisk Analys och Datalogi, NADA.ORCID-id: 0000-0002-2358-7815
2005 (engelsk)Inngår i: Neurocomputing, ISSN 0925-2312, E-ISSN 1872-8286, Vol. 65, s. 167-172Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We propose a developmental model of the summation pools within the layer 4. The model is based on the modular structure of the neocortex and captures some of the known properties of layer 4. Connections between the orientation minicolumns are developed during exposure to visual input. Excitatory local connections are dense and biased towards the iso-orientation domain. Excitatory long-range connections are sparse and target all orientation domains equally. Inhibition is local. The summation pools are elongated along the orientation axis. These summation pools can facilitate weak and poorly tuned LGN input and explain improved visibility as an effect of enlargement of a stimulus.

sted, utgiver, år, opplag, sider
2005. Vol. 65, s. 167-172
Emneord [en]
visual cortex, summation pools, horizontal connections, response facilitation, Bayesian confidence propagation neural network, cat visual-cortex, simple cells, functional architecture, input
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-14811DOI: 10.1016/j.neucom.2004.10.004ISI: 000229663600022Scopus ID: 2-s2.0-18144382319OAI: oai:DiVA.org:kth-14811DiVA, id: diva2:332852
Merknad
QC 20100525 QC 20111011Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2018-01-12bibliografisk kontrollert

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