| Autor: |
Barrow HG; School of Cognitive and Computing Sciences, University of Sussex, Falmer, Brighton, UK., Bray AJ, Budd JM |
| Jazyk: |
angličtina |
| Zdroj: |
Neural computation [Neural Comput] 1996 Oct 01; Vol. 8 (7), pp. 1427-48. |
| DOI: |
10.1162/neco.1996.8.7.1427 |
| Abstrakt: |
This paper explores the possibility that the formation of color blobs in primate striate cortex can be partly explained through the process of activity-based self-organization. We present a simulation of a highly simplified model of visual processing along the parvocellular pathway, that combines precortical color processing, excitatory and inhibitory cortical interactions, and Hebbian learning. The model self-organizes in response to natural color images and develops islands of unoriented, color-selective cells within a sea of contrast-sensitive, orientation-selective cells. By way of understanding this topography, a principal component analysis of the color inputs presented to the network reveals that the optimal linear coding of these inputs keeps color information and contrast information separate. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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