Form Perception

171.

The effect of letter spacing on reading speed in central and peripheral vision.

PURPOSE: Crowding, the adverse spatial interaction due to proximity of adjacent letters, has been suggested as an explanation for slow reading in peripheral vision. The purpose of this study was to examine whether reading speed can be improved in normal ...
Susana T L Chung (Invest Ophthalmol Vis Sci, 200204)
effect-letter-spacing-reading-speed-central-peripheral-vision.asp

172.

Generalizing the dynamic field theory of the A-not-B error beyond infancy: three-year-olds delay- and experience-dependent location memory biases.

Thelen and colleagues recently proposed a dynamic field theory (DFT) to capture the general processes that give rise to infants performance in the Piagetian A-not-B task. According to this theory, the same general processes should operate in noncanonical ...
Anne R Schutte, John P Spencer (Child Dev, 200203-04)
generalizing-dynamic-field-theory-not-b-error-beyond-infancy-three.asp

173.

Comparison of color and luminance vision on a global shape discrimination task.

We compared the performances of the blue-yellow, red-green and luminance systems on a shape discrimination task. Stimuli were radial frequency patterns (radially modulated fourth derivative of a Gaussian) with a peak spatial frequency of 0.75 cpd. ...
Kathy T Mullen, William H A Beaudot (Vision Res, 200203)
comparison-color-luminance-vision-global-shape-discrimination-task.asp

174.

Development of animal recognition: a difference between Parts and Wholes.

A series of experiments examined childrens recognition of animals by their features (Parts) and by the relative scale of the parts (Wholes). They were asked to identify the correct picture of an animal they could name from the original plus two ...
Jules Davidoff, Debi Roberson (J Exp Child Psychol, 200203)
development-animal-recognition-difference-parts-wholes.asp

175.

High temporal frequency synchrony is insufficient for perceptual grouping.

We used textures of randomly moving grating patches to assess the role of fine-grain temporal synchrony in texture segregation. In the target area, patches reversed direction simultaneously. In the surround, patches changed direction at random times. ...
Michael Morgan, Eric Castet (Proc R Soc Lond B Biol Sci, 200203)
high-temporal-frequency-synchrony-insufficient-perceptual-grouping.asp

176.

Shape predominant effect in pattern recognition of geometric figures of rhesus monkey.

Three monkeys were trained successively with discrimination, concurrent matching to sample, and sameness-difference judgment tasks in which learning curves were compared. Then, the display duration for the stimuli was shortened to 100, 50, and 30 ms ...
Yucui Chen, Weiwei Zhang, Zheng Shen (Vision Res, 200203)
shape-predominant-effect-pattern-recognition-geometric-figures-rhesus.asp

177.

Generic and non-generic conditions for the perception of surface shape from texture.

Li and Zaidi (Vision Research 40 (2000) 217; 41 (2001) 1519) have recently argued that there are two necessary conditions for the perception of 3D shape from texture: (1) the texture pattern must have a disproportionate amount of energy along directions ...
James T Todd, Augustinus H J Oomes (Vision Res, 200203)
generic-non-generic-conditions-perception-surface-shape-texture.asp

178.

Limitations on shape information provided by texture cues.

This paper uses visual, empirical and formal methods (Li & Zaidi, Vision Research, 40 (2000) 217; Li & Zaidi, Vision Research, 41 (22) (2001a) 2927) to examine the roles of oriented texture components in conveying veridical percepts of concave and convex ...
Qasim Zaidi, Andrea Li (Vision Res, 200203)
limitations-shape-information-provided-texture-cues.asp

179.

Young infants perception of unity and form in occlusion displays.

Young infants have been reported to perceive the unity of a center-occluded object when the visible ends of the object are aligned and undergo common motion but not when the edges of the object are misaligned (Johnson & Aslin, 1996). Using a ...
Scott P Johnson, J Gavin Bremner, Alan M Slater, Uschi C Mason, Kirsty Foster (J Exp Child Psychol, 200203)
young-infants-perception-unity-form-occlusion-displays.asp

180.

Multisensory spatial representations in eye-centered coordinates for reaching.

Humans can reach for objects with their hands whether the objects are seen, heard or touched. Thus, the position of objects is recoded in a joint-centered frame of reference regardless of the sensory modality involved. Our study indicates that this frame ...
Alexandre Pouget, Jean Christophe Ducom, Jeffrey Torri, Daphne Bavelier (Cognition, 200202)
multisensory-spatial-representations-eye-centered-coordinates-reaching.asp