| Quantifying and modeling the strength of motion illusions perceived in static patterns. | |
| | |
MedLine Citation:
|
PMID: 20462314 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The origin of motion illusions in simple black and white patterns such those as used by Op artists has been at the center of a lively scientific debate, relating motion processing mechanisms to involuntary eye movements that generate characteristic motion patterns. To overcome the limitations of using subjective ratings as a measure of illusory effects, we developed a new method to quantify the strength of the illusion for synthetic 'riloids' that were inspired by Bridget Riley's 'Fall'. In a 2AFC paradigm, test stimuli were compared to a reference set of patterns that elicit illusory motion of variable strength. We found that pattern parameters influencing the distribution of local orientation in the riloids (the amplitude and the spatial period of the line undulation) systematically affect illusion strength, whereas other parameters, such as the spatial period of the lines themselves, the duration of the stimulus, or fixation conditions, have little effect. These behavioral data are compared in computer simulations to the predicted activity generated by motion detector networks for displacements of the riloids that reflect small eye movements. The match between predicted illusion strength and experimental data support an explanation of the motion illusion in terms of retinal image shifts. |
| | |
Authors:
|
Johannes M Zanker; Frouke Hermens; Robin Walker |
Related Documents
:
|
3451194 - Vicario's illusion of sloping steps reexamined. 17997644 - Anchoring versus spatial filtering accounts of simultaneous lightness contrast. 3205664 - On a changing perspective illusion within vermeer's the music lesson. 17515804 - Inverted event-related potentials response to illusory contour in boys with autism. 21263524 - Transparent fourier transform spectrometer. 20661444 - Early origin for human-like precision grasping: a comparative study of pollical distal ... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-02-16 |
Journal Detail:
|
Title: Journal of vision Volume: 10 ISSN: 1534-7362 ISO Abbreviation: J Vis Publication Date: 2010 |
Date Detail:
|
Created Date: 2010-05-13 Completed Date: 2010-08-13 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101147197 Medline TA: J Vis Country: United States |
Other Details:
|
Languages: eng Pagination: 13.1-14 Citation Subset: IM |
Affiliation:
|
Department of Psychology, Royal Holloway University of London, UK. j.zanker@rhul.ac.uk |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Eye Movements
/
physiology* Fixation, Ocular / physiology Humans Illusions / physiology* Judgment / physiology Models, Neurological* Motion Perception / physiology* Photic Stimulation / methods Visual Fields / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Human scotopic sensitivity is regulated postreceptorally by changing the speed of the scotopic respo...
Next Document: Capacity limits during perceptual encoding.