unipd

COLLOQUIA PATAVINA

unipd



A cortical inspired, geometrical model for contour perception and motion integration

Giovanna Citti (Universita' di Bologna)

16.4.2013



Abstract
We develop a geometrical model of functional architecture for the processing of spatiotemporal visual stimuli. The model arises from the properties of the receptive field, sensible to orientation and speed in the visual cortex. This selectivity property allows to model the cortical as a contact manifold of dimension 5. The fundamental solution of a Fokker Planck equation in this space plays the role of facilitation patterns within a neural activity model, and allows to reproduce some psychophysiological findings about the perception of contours in motion and trajectories of points.