منابع مشابه
Neural basis of 3-D shape aftereffects
We used selective adaptation to identify the neural mechanisms responsible for 3-D shape perception from orientation flows in retinal images [Li, A., & Zaidi, Q. (2000). Perception of three-dimensional shape from texture is based on patterns of oriented energy. Vision Research 40 (2), 217-242)]. Three-dimensional shape adaptation could involve stages from photoreceptors to non-oriented retinal ...
متن کاملWhy do shape aftereffects increase with eccentricity?
Studies have shown that spatial aftereffects increase with eccentricity. Here, we demonstrate that the shape-frequency and shape-amplitude aftereffects, which describe the perceived shifts in the shape of a sinusoidal-shaped contour following adaptation to a slightly different sinusoidal-shaped contour, also increase with eccentricity. Why does this happen? We first demonstrate that the percept...
متن کاملMaximal motion aftereffects in spite of diverted awareness
This study attempts to isolate the underlying processing resources of visual attention from the 'cognitive supervision'-working memory, decision processes, but especially awareness-that typically accompanies their allocation. To decouple them, we used the motion aftereffect (MAE) as a passive assay of resource allocation. In our main condition, observers were presented with an adapting field, b...
متن کاملGlobal shape aftereffects in composite radial frequency patterns.
Individual radial frequency (RF) patterns are generated by modulating a circle's radius as a sinusoidal function of polar angle and have been shown to tap into global shape processing mechanisms. Composite RF patterns can reproduce the complex outlines of natural shapes and examining these stimuli may allow us to interrogate global shape mechanisms that are recruited in biologically relevant ta...
متن کاملThe initial interactions underlying binocular rivalry require visual awareness.
Current theories of binocular vision suggest that the neural processes that resolve interocular conflict do not involve a single brain region but occur at multiple stages of visual processing. Here, using an adaptation paradigm, we explore the initial mechanisms involved in selecting a stimulus for perceptual dominance during binocular rivalry. When one or both eyes briefly viewed an adapting g...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2010
ISSN: 1534-7362
DOI: 10.1167/10.7.327