The physiological responses of simple and complex cells in the primary visual cortex (V1)
have been studied extensively and modeled at different levels. At the functional level, the …

For many birds, the fight for survival begins at the egg stage: avoiding predation is
paramount. At a broad phylogenetic level, selection by predators for egg camouflage …

To understand how different spatial frequencies contribute to the overall perceived contrast
of complex, broadband photographic images, we adapted the classification image …

Visual crowding is the inability to identify visible features when they are surrounded by other
structure in the peripheral field. Since natural environments are replete with structure and …

We conducted suprathreshold discrimination experiments to compare how natural-scene
information is processed in central and peripheral vision (16° eccentricity). Observers' …

The contrast sensitivity function (CSF) characterizes spatial detection in the human visual
system and is typically measured from simple, synthetic stimuli. We used spatial frequency …

The Euclidean and MAX metrics have been widely used to model cue summation
psychophysically and computationally. Both rules happen to be special cases of a more …

Most contemporary models of spatial vision include a cross-oriented route to suppression
(masking from a broadly tuned inhibitory pool), which is most potent at low spatial and high …

In this paper I argue that certain methodological conventions within psychophysics reflect a
continued uncertainty over the reliability of subjects' introspective judgements. Firstly …

Global motion integration mechanisms can utilize signals defined by purely chromatic
information. Is global motion integration sensitive to the polarity of such color signals? To …