A model of the summation pools within the layer 4 (area 17)
2005 (English)In: Neurocomputing, ISSN 0925-2312, Vol. 65, 167-172 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2005. Vol. 65, 167-172 p.
visual cortex, summation pools, horizontal connections, response facilitation, Bayesian confidence propagation neural network, cat visual-cortex, simple cells, functional architecture, input
Bioinformatics (Computational Biology)
IdentifiersURN: urn:nbn:se:kth:diva-14811DOI: 10.1016/j.neucom.2004.10.004ISI: 000229663600022ScopusID: 2-s2.0-18144382319OAI: oai:DiVA.org:kth-14811DiVA: diva2:332852
QC 20100525 QC 201110112010-08-052010-08-052012-01-03Bibliographically approved