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Quantitative Assessment of the Local and Long-Range Horizontal Connections within the Striate Cortex

Fulltext:


Authors:

Baran Çürüklü, Anders Lansner

Research group:

Robotics

Publication Type:

Conference/Workshop Paper

Venue:

Special Session on ICONIP

Publisher:

IEEE

Abstract

We present a quantitative assessment of the local and long-range horizontal connections within two separate models of layer 4 and layer 2/3 of the striate cortex. Connections between the orientation minicolumns, building the models, are developed during exposure to visual input. Layer 4 long-range horizontal connections target all orientation domains in a balanced manner, whereas local connections are biased towards the iso-orientation domain. However, both local and long-range horizontal connections of the layer 2/3 network are biased towards the iso-orientation domains. We hypothesize that the patchy layout of the layer 2/3 long-range connections is a consequence of excitatory cells targeting mainly other excitatory cells located in distal iso-orientation domains. Furthermore, both networks demonstrate dense local and sparse distal connectivity.

Bibtex

@inproceedings{Curuklu480,
author = {Baran {\c{C}}{\"u}r{\"u}kl{\"u} and Anders Lansner},
title = {Quantitative Assessment of the Local and Long-Range Horizontal Connections within the Striate Cortex},
month = {December},
year = {2003},
booktitle = {Special Session on ICONIP},
publisher = {IEEE},
url = {http://www.es.mdu.se/publications/480-}
}