Spatial Vision

Spatial Vision

Fundamentals of Spatial Vision

The adult human eye is aproximately 25mm in diameter and weighs about 7g. The anterior section of the eye contains the eye's optical system whose major structures are the cornea, lens, and iris. The cornea provides about two-thirds of the eye's refractive power, but the lens provides ne focus for targets at distances from 20 feet down to about 4 inches (Pugh88). The ciliary muscles attached to ...

Auditory Spatial Perception without Vision

Valuable insights into the role played by visual experience in shaping spatial representations can be gained by studying the effects of visual deprivation on the remaining sensory modalities. For instance, it has long been debated how spatial hearing evolves in the absence of visual input. While several anecdotal accounts tend to associate complete blindness with exceptional hearing abilities, ...

Detecting disorder in spatial vision

In normal foveal vision, visual space is accurately mapped from retina to cortex. However, the normal periphery, and the central field of strabismic amblyopes have elevated position discrimination thresholds, which have often been ascribed to increased 'intrinsic' spatial disorder. In the present study we evaluated the sensitivity of the human visual system (both normal and amblyopic) to spatia...

Spatial Vision in Bombus terrestris

Bombus terrestris is one of the most commonly used insect models to investigate visually guided behavior and spatial vision in particular. Two fundamental measures of spatial vision are spatial resolution and contrast sensitivity. In this study, we report the threshold of spatial resolution in B. terrestris and characterize the contrast sensitivity function of the bumblebee visual system for a ...