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- C. Piepenbrock,
H. Ritter, and K. Obermayer. The Joint Development of Orientation and
Ocular Dominance: role of Constraints.
.
Neural Comput., 9:959-970, 1997.
(FTP Gzipped PostScript, 11 pages, 48 kb)
Correlation-based learning (CBL) has been suggested as the
mechanism which underlies the development of simple-cell receptive fields in
the primary visual cortex of cats, including orientation preference (OR) and
ocular dominance (OD) (Linsker, 19986; Miller, Keller, and Stryker 1989). CBL
has been applied successfully to the development of OR and OD individually
(Miller, Keller, and Stryker, 1989; Miller, 1994; Miyashita and Tanaka, 1991;
Erwin, Obermayer, and Schulten, 1995), but the conditions for their joint
development have not been studied (but see [erwi95b] for independent
work on the same question) in contrast to competitive Hebbian models
(Obermayer, Blasdel, and Schulten, 1992). In this note we provide insight
into why this has been the case: OR and OD decouple in symmetric CBL models
and a joint development of OR and OD is possible only in a parameter regime
that depends on nonlinear mechanisms.
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