Spatial constancy mechanisms in motor control

Spatial constancy mechanisms in motor control.

The success of the human species in interacting with the environment depends on the ability to maintain spatial stability despite the continuous changes in sensory and motor inputs owing to movements of eyes, head and body. In this paper, I will review recent advances in the understanding of how the brain deals with the dynamic flow of sensory and motor information in order to maintain spatial ...

Pixel and spatial mechanisms of color constancy

Color constancy remains an important subject of research on color standards, computer imaging, and human color vision. There are many different theories and algorithms that interpret and predict constancy. This paper analyzes three different approaches that are frequently discussed separately in the literature: pixel-based colorimetric standards of appearance; computer imaging calculations of a...

Mechanisms of simultaneity constancy

On Constancy in Spatial Perception

The perceptual constancies are at the heart of the scientific and philosophical study of perceptual experience, for they are responsible for our enjoying stable percepts despite fluctuating proximal stimulation. For some time, it has therefore seemed natural to appeal to the constancies as a way of explaining the factivity of perception how (in veridical cases) we present or represent our envir...

Mechanisms of color constancy.

We develop a model of how the visual system finds the colors of objects that have unknown shapes and positions. The model relies on mechanisms of light adaptation, coupled with eye movements, to recover three descriptors of surface reflectance that are represented in the signals of an achromatic mechanism and two color-opponent mechanisms. These descriptors are transformed to yield estimates of...