A complete understanding of visual phonetic perception (lipreading) requires linking perceptual effects to physical stimulus properties. However, the talking face is a highly complex stimulus, affording innumerable possible physical measurements. In the search for isomorphism between stimulus properties and phoneticeffects, second-order isomorphism was examined between theperceptual similaritie...

For audiovisual sensory events, sound arrives with a delay relative to light that increases with event distance. It is unknown, however, whether humans can use these ubiquitous sound delays as an information source for distance computation. Here, we tested the hypothesis that audiovisual delays can both bias and improve human perceptual distance discrimination, such that visual stimuli paired w...

Attempts to demonstrate a relationship between students’ approaches to studying in higher education and their perceptions of their academic context have been bedevilled by limitations of the research instruments and the problem of aggregating students’ perceptions and approaches across different course units. The extended version of the Course Experience Questionnaire (Wilson et al., 1997) and ...

We used the sequential stereopsis paradigm and apparatus described by Enright (Vision Research, 36, (1996) 307-312). The observer's task was to set targets to equidistance in Experiments 1-3, and to make them co-planar in Experiment 4. However, it is argued that in all experiments observers exploited a co-planarity setting strategy. Sequential stereopsis produced good performance throughout in ...

Motions within one region of the field influence motion seen elsewhere. To explore this phenomenon we used cinematograms comprised of alternating strips within which dots (i) tended to move in one direction, or (ii) moved in random directions (dynamic noise). When alternating strips were narrow, motion in one direction induced a similar direction of illusory motion in the adjoining dynamic nois...

Depth-of-focus limitations introduce spatial blur in images of three-dimensional scenes. It is not clear how the visual system combines depth information derived from image blur with information from other depth cues. Stereoscopic disparity is the pre-eminent depth cue, so experiments were conducted to investigate interactions between image blur and stereoscopic disparity. Observers viewed two ...

Familiar size is usually regarded as an important empirical cue determining the apparent distances of objects. The learning process that is assumed to occur in the development of this distance cue depends upon the relation between the retinal size of an object and its physical distance from the observer (0). A simple explanation of the process involved in this cue system is as follows. In a sit...

Images of three-dimensional scenes inevitably contain regions that are spatially blurred by differing amounts, owing to depth-of-focus limitations in the imaging apparatus. Recent perceptual data indicate that this blur variation acts as an effective cue to depth: if one image region contains sharply focused texture, and another contains blurred texture, then the two regions may be perceived at...

The Internet holds a lot of potential as a music listening, collaboration, and performance space. It has become commonplace to stream music and video of musical performance over the web. However, the goal of playing rhythmically synchronized music over long distances has remained elusive due to the latency inherent in networked communication. The farther apart two artists are from one another, ...

With recent increases in online enrollment, undergraduate students are far more likely to experience an online learning environment than they were in the past. While existing literature provides general insight into reasons why students may or may not prefer online instruction, it is unclear whether these preferences are shaped by student’s perceptions of online learning or actual experience wi...