Linear correlation-based learning models require a two-stage process for the development of orientation and ocular dominance
✍ Scribed by Christian Piepenbrock; Helge Ritter; Klaus Obermayer
- Publisher
- Springer US
- Year
- 1996
- Tongue
- English
- Weight
- 476 KB
- Volume
- 3
- Category
- Article
- ISSN
- 1370-4621
No coin nor oath required. For personal study only.
✦ Synopsis
In our contribution we demonstrate, that orientation (OR) and ocular dominance (OD) cannot develop simultaneously in linear correlation-based learning (CBL) models, because OR and OD occupy separate domains in parameter space. We then analyse the conditions under which waves of spontaneous activity -as have been observed in the developing retina -may give rise at least to OR or OD. We find that in linear CBL models there must be subcortical convergence of ON / OFF as well as let2 eye/right eye pathways. We present a biologically plausible scenario in which the subcortical connectivity patterns resemble a competitive neural network and argue that OR and OD can robustly emerge, if a two-stage developmental process is assumed.