no code implementations • 6 Jun 2014 • Tomaso Poggio, Jim Mutch, Leyla Isik
From the slope of the inverse of the magnification factor, M-theory predicts a cortical "fovea" in V1 in the order of $40$ by $40$ basic units at each receptive field size -- corresponding to a foveola of size around $26$ minutes of arc at the highest resolution, $\approx 6$ degrees at the lowest resolution.
no code implementations • 17 Nov 2013 • Fabio Anselmi, Joel Z. Leibo, Lorenzo Rosasco, Jim Mutch, Andrea Tacchetti, Tomaso Poggio
It also suggests that the main computational goal of the ventral stream of visual cortex is to provide a hierarchical representation of new objects/images which is invariant to transformations, stable, and discriminative for recognition---and that this representation may be continuously learned in an unsupervised way during development and visual experience.
no code implementations • NeurIPS 2011 • Joel Z. Leibo, Jim Mutch, Tomaso Poggio
Many studies have uncovered evidence that visual cortex contains specialized regions involved in processing faces but not other object classes.