Cross-modal interactions in the stream-bounce illusion: exploring the visual transient

Tin, Ho Sing (2012). Cross-modal interactions in the stream-bounce illusion: exploring the visual transient Honours Thesis, School of Psychology, The University of Queensland.

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
TINHo4071thesis2012.pdf Thesis full text application/pdf 1.32MB 6
Author Tin, Ho Sing
Thesis Title Cross-modal interactions in the stream-bounce illusion: exploring the visual transient
School, Centre or Institute School of Psychology
Institution The University of Queensland
Publication date 2012-10-10
Thesis type Honours Thesis
Supervisor Philip Grove
Total pages 75
Language eng
Subjects 1701 Psychology
Abstract/Summary Cross-modal interactions are a necessity for organisms to attune to various aspects of the environment. It aids in diminishing perceptual discrepancies caused through the use of a single modality. This effect can be studied with the Stream-Bounce illusion: Two identical disks moving towards each other which can be perceived as streaming through or bouncing off each other at superimposition. Empirical research reveals that presentation of a visual flash, auditory tone or tactile vibration robustly increases the bouncing percept. The auditory and tactile transients are also known to possess much wider Temporal Binding Windows than the visual transient. However, all previous studies demonstrated a consistent procedural confound regarding the presentation of the visual flash. The visual flash was always presented as a small-sized flash and its spatial properties have never before been manipulated. Subsequently, it was hypothesised that a physically larger flash would trigger the mechanisms of the general attentional modulation theory and would subsequently promote a larger window of effect equivalent to that of the auditory tone. Investigations revealed that the large flash was in fact less salient than the small flash in inducing the bounce-percept. These results were thought to be attributed to the unintentional shape of the large flash representing a pathway. Further investigations revealed the same effect even when the large flash was disjointed to negate this impression. Based on these novel results, it was suggested that attention alone cannot explain bouncing in the stream-bounce illusion. Whilst the larger flash was less salient in inducing bouncing, it is the first piece of empirical evidence demonstrating that the size of the flash is a considerable matter in the Stream-Bounce display.
Keyword Cross-modal interactions
Stream-bounce illusion
Visual transient

Citation counts: Google Scholar Search Google Scholar
Created: Fri, 08 Mar 2013, 15:38:29 EST by Mrs Ann Lee on behalf of School of Psychology