Formation of Direction Selectivity in Natural Scene Environments

Brian S. Blais, Bryant University
Leon N. Cooper, Brown University
Harel Z. Shouval, Brown University

Document Type Article

Published by MIT Press in Neural Computation; Volume 12, No. 5, May 2000, pages 1057-1066.
DOI: 10.1162/089976600300015501
Bryant users may access this article here


Most simple and complex cells in the cat striate cortex are both orientation and direction selective. In this paper we use single cell learning rules to develop both orientation and direction selectivity in a natural scene environment. We show that a simple PCA rule is inadequate for developing direction selectivity, but that the BCM rule as well as similar higher order rules can. We also demonstrate that the convergence of lagged and non-lagged cells depends on the velocity of motion in the environment, and that strobe rearing disrupts this convergence resulting in a loss of direction selectivity.