| Determining the point of subjective ambiguity of ambiguous biological-motion figures with perspective cues. | |
| | |
MedLine Citation:
|
PMID: 20160296 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Orthographic frontal/back projections of biological-motion figures are bistable: The point-light figure in principle can be perceived either as facing toward the viewer or as facing away from the viewer. Some point-light actions--for example, walking--elicit a strong "facing bias": Despite the absence of objective cues to depth, observers tend to interpret the figure as facing toward the viewer in most of the cases. In this article, we present and experimentally validate a technique that affords full experimental control of the perceived in-depth orientation of point-light figures. We demonstrate that by parametrically manipulating the amount of perspective information in the stimulus, it is possible to obtain any desired level of subjective ambiguity. Directions for future research, in which this technique can be fruitfully implemented, are suggested. Program code of a demo is provided that can be modified easily for program code of new experiments. The demo and QuickTime movie files illustrating our perspective manipulation technique may be downloaded from http://brm.psychonomic-journals.org/content/supplemental. |
| | |
Authors:
|
Ben Schouten; Karl Verfaillie |
Related Documents
:
|
19304626 - Computation of mean size is based on perceived size. 10571236 - Motion-based mechanisms of illusory contour synthesis. 1005016 - A figure-density hypothesis and illusory contour brightness. 17239916 - Kaleidoscopic motion and velocity illusions. 20404396 - An online brain-computer interface using non-flashing visual evoked potentials. 22504546 - Ecological opportunity and diversification in a continental radiation of birds: climbin... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Behavior research methods Volume: 42 ISSN: 1554-3528 ISO Abbreviation: Behav Res Methods Publication Date: 2010 Feb |
Date Detail:
|
Created Date: 2010-02-17 Completed Date: 2010-05-20 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101244316 Medline TA: Behav Res Methods Country: United States |
Other Details:
|
Languages: eng Pagination: 161-7 Citation Subset: IM |
Affiliation:
|
University of Leuven, Leuven, Belgium. ben.schouten@psy.kuleuven.be |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Cues Humans Motion Perception* Visual Perception Walking |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: A comparison of blindpulling and blindwalking as measures of perceived absolute distance.
Next Document: Inferring intentions from biological motion: A stimulus set of point-light communicative interaction...