Introduces two systems that increase the information density of textual presentation by reconsidering text as pictures, expanding the range of written expression. Notes that these systems are implemented as computer programs, active filters that represent textual information graphically. (SR)

A theory is presented to explain the perception of partially occluded objects and illusory figures, from both static and kinematic information, in a unified framework. This detailed theory of unit formation accounts for most cases of boundary perception in the absence of local physical specification. (SLD)

Speed and accuracy of identification of pictures of objects are facilitated by prior viewing. Contributions of image features, convex or concave components, and object models in a repetition priming task were explored in 2 studies involving 96 college students. Results provide evidence of intermediate representations in visual object recognition.…

The relationship between visual neglect and the ability to judge the angular orientation of lines in patients with unilateral cerebrovascular lesions was studied with 75 patients with right hemisphere lesions and 39 with left hemisphere lesions. Results are discussed in relation to general cognitive factors and perceptual and spatial abilities.…

Three experiments examined whether limitations in perceptual ability by 24 individuals with mental retardation extended to learning perceptual categories based on elements of actions. Individuals with mental retardation had difficulty identifying some actions, slower decision times for activity identification, and could not identify the actor's…

Used event-related potentials to determine whether infants show differences in spatial and temporal characteristics of brain activation during face and object recognition. Found that infants' experience with specific examples within categories and their general category knowledge influenced the neural correlates of visual processing. (Author/KB)

Investigated the effects of of distance on perception of unimodal visual speech and congruent and incongruent forms of the syllables /ba/, /bi/, /ga/, and /gi/. Identification of unimodal visual speech was unaffected by increasing distance to 10m, but was impaired at 20 and 30m. (Author/VWL)

Studied the structure of color cures that allows the express recognition of scene gists in 3 experiments involving 60 college students. Taken together, results suggest that colored blobs at a coarse spatial scale concur with luminance cues to form the relevant spatial layout that mediates express scene recognition. (SLD)

The question of innateness, which naturally arises in respect of the method of category construction proposed by vantage theory, is notoriously difficult. Discusses some of the problems inherent in this type of issue, along with attendant assumptions. Then, turns to what might constitute possible grounding for vantage theory. (Author/VWL)

Studies the effectiveness of adding coordinate axes to mental rotations tasks. Assesses the effect of the coordinate axes, the effect of pretest sensitization, and interaction between the pretest and posttest conditions. (Author/CCM)

This study investigates whether the right hemisphere has more flexible contrast gain control settings for the identification of spatial frequency. Right-handed participants identified 1 and 9 cycles per degree sinusoidal gratings presented either to the left visual field-right hemisphere (LVF-RH) or the right visual field-left hemisphere (RVF-LH).…

This study examined gap choices and crossing behavior in children and adults using an immersive, interactive bicycling simulator. Ten- and 12-year-olds and adults rode a bicycle mounted on a stationary trainer through a virtual environment consisting of a street with 6 intersections. Participants faced continuous cross traffic traveling at 25mph…

Prior studies of time-to-contact (TTC) focused on judgments of unoccluded approaching objects. P. R. DeLucia, M. K. Kaiser, J. M. Bush, L. E. Meyer, and B. T. Sweet (2003) showed that partial occlusion decreases an object's optical size and expansion rate and that the value of tau derived from the reduced optical size (relative rate of accretion;…

In 4 experiments, the authors varied the extent and nature of participant movement in a virtual environment to examine the influence of action on estimates of geographical slant. Previous studies showed that people consciously overestimate hill slant but can still accurately guide an action toward the hill (D. R. Proffitt, M. Bhalla, R.…

The authors used visual search tasks in which components of the classic flanker task (B. A. Eriksen & C. W. Eriksen, 1974) were introduced. In several experiments the authors obtained evidence of parallel search for a target among distractor elements. Therefore, 2-stage models of visual search predict no effect of the identity of those…