Human vision can detect spatiotemporal information conveyed by first-order modulations of
luminance and by second-order, non-Fourier modulations of image contrast. Models for …

Vision is sensitive to first-order luminance modulations and second-order modulations of
carrier contrast. Our knowledge of the temporal properties of second-order vision is …

Visual scenes can be readily decomposed into a variety of oriented components, the
processing of which is vital for object segregation and recognition. In primate V1 and V2 …

Thresholds for identifying the direction of second-order motion (contrast-modulated dynamic
noise) are consistently higher than those for identifying spatial orientation, unlike first-order …

It is generally assumed that the perception of non-Fourier motion requires the operation of
some nonlinearity before motion analysis. We apply a computational model of biological …

Recent work on motion processing has suggested a distinction between first-order cues
(such as luminance modulation [LM]) and second-order cues (such as local contrast …

We sought to investigate why the direction of second-order motion, unlike first-order motion,
cannot be identified when the stimulus exposure duration is brief (< 200 ms). In a series of …

When a static textured background is covered and uncovered by a moving bar of the same
mean luminance we can clearly see the motion of the bar. Texture-defined motion provides …

It has been widely accepted that standard low-level computational approaches to motion
processing cannot extract texture-defined motion without applying some pre-processing …

In this chapter, which was the North American plenary address at the 2009 Bion in Boston
conference, Grotstein masterfully compares and contrasts Bion's theory of dreaming with that …