Lu Sperling [Vision Res. 35, 2697 (1995)] proposed that human visual motion perception is
served by three separate motion systems: a first-order system that responds to moving …

Single-unit neurophysiology and human psychophysics have begun to reveal distinct neural
mechanisms for processing visual stimuli defined by differences in contrast or texture …

We have examined the activity levels produced in various areas of the human occipital
cortex in response to various motion stimuli using functional magnetic resonance imaging …

The contributors to this volume are all active researchers who have helped to shape the
modern conception of MAE. Motion perception lies at the heart of the scientific study of …

We investigated global motion processing in a group of adult amblyopes using a method
that allows us to factor out any influence of the known contrast sensitivity deficit. We show …

A moving grating elicits innate optomotor behavior in zebrafish larvae; they swim in the
direction of perceived motion. We took advantage of this behavior, using computer-animated …

Widespread deficits are known to accompany normal aging. Contrast thresholds of older
and younger observers were measured for static and drifting gratings defined by luminance …

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 …

A number of psychophysical and physiological studies have suggested that first-and second-
order motion signals are processed, at least initially, by independent pathways, and that the …

Naturally occurring visual stimuli are rich in examples of objects delineated from their
backgrounds simply by differences in luminance, so-called first-order stimuli, as well as …