We examine the contributions of preneural mechanisms, ie, the optics of the eye and the
aperture, spacing, and efficiency of foveal cones, to poor spatial and chromatic vision in …

A recently developed nonlinear mathematical model for spatial pattern discrimination, which
is formally analogous to line element models in color vision, was applied to a variety of …

The contrast sensitivity function (CSF) predicts functional vision better than acuity, but long
testing times prevent its psychophysical assessment in clinical and practical applications …

Although numerous studies have measured the strength of visual grouping cues for
controlled psychophysical stimuli, little is known about the statistical utility of these various …

When we observe our visual environment, we do not perceive all its components as being
equally interesting. Some objects automatically and effortlessly “pop-out” from their …

A quantitative model is developed to predict the perceived direction of moving two-
dimensional patterns. The model incorporates both a simple motion energy pathway and a …

This paper examines how observers estimate the overall orientation of spatially
disorganised textures containing variable orientation. Experiments used asymmetrical …

What is the mind? How does it work? How does it influence behavior? Some psychologists
hope to answer such questions in terms of concepts drawn from computer science and …

Light Vision Color takes a well-balanced, interdisciplinary approach to our most important
sensory system. The book successfully combines basics in vision sciences with recent …

We created random-dot cinematograms in which each dot's successive movements were
independently drawn from a Gaussian distribution of directions of some characteristic …