Deterioration of visual motion perception in mesopic vision

Colour vision and visual performance in the mesopic range of vision

The aim of this work is to predict mesopic detection contrast thresholds for spectral increments on a fixed uniform mesopic background. A compound contrast-type quantity C including achromatic and chromatic terms is defined. The detection threshold is characterized by C=1. From this criterion, a spectral non-additivity formula (NA) is derived for a mesopic luminance difference type quantity. Ac...

Perception of Visual Motion

Peripheral vision of youths with low vision: motion perception, crowding, and visual search.

PURPOSE Effects of low vision on peripheral visual function are poorly understood, especially in children whose visual skills are still developing. The aim of this study was to measure both central and peripheral visual functions in youths with typical and low vision. Of specific interest was the extent to which measures of foveal function predict performance of peripheral tasks. METHODS We a...

Visual motion perception.

The primate visual motion system performs numerous functions essential for survival in a dynamic visual world. Prominent among these functions is the ability to recover and represent the trajectories of objects in a form that facilitates behavioral responses to those movements. The first step toward this goal, which consists of detecting the displacement of retinal image features, has been stud...

The visual perception of motion

Sensing the movements of the world and the objects within it appears to be a fundamental job for our visual system. In rare cases of brain damage, we find that individuals lacking motion perception live in a very different world of frozen images, where simple tasks like filling a kettle or crossing the road take on alarming difficulties. That tasks such as driving a fast car down the freeway re...