| Differential intrinsic bias of the 3-D perceptual environment and its role in shape constancy. | |
| | |
MedLine Citation:
|
PMID: 21927826 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
In a three-dimensional (3-D) environment, sensory information is projected on a 2-D retina with the consequence that the visual system needs space information for accurately reconstructing the visual world. However, the 3-D environment is not accurately represented in the brain; in particular, the perception of distances in depth is imprecise. It has been argued that the visual system has an intrinsic bias of visual space where targets located on the ground floor are perceived on an implicit elevated surface. We studied how such an intrinsic bias of visual space affects shape constancy. We found that the projected shape of a semicircle can be explained taking into account a differential implicit slant surface. The depth/width ratio, which is a measure for the shape of the stimulus, is overestimated for angular declination smaller than ~60°, while it is underestimated for larger angular declinations. Our results are important for explaining shape constancy and may be important for understanding some perceptual illusions. |
| | |
Authors:
|
Antonio Aznar-Casanova; Matthias Sven Keil; Manuel Moreno; Hans Supèr |
Related Documents
:
|
19771446 - Influence of motor unit synchronization on amplitude characteristics of surface and int... 16782246 - Torque and emg in rotation extension of the torso from pre-rotated and flexed postures. 12779876 - Symbolic dynamics of jejunal motility in the irritable bowel. 10659446 - Emg responses resulting from transient and steady-state dynamic isometric loading of th... 17934186 - Shape selectivity for camouflage-breaking dynamic stimuli in dorsal v4 neurons. 21332506 - Circadian control of root elongation and c partitioning in arabidopsis thaliana. |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-9-17 |
Journal Detail:
|
Title: Experimental brain research. Experimentelle Hirnforschung. Experimentation cerebrale Volume: - ISSN: 1432-1106 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
|
Created Date: 2011-9-19 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0043312 Medline TA: Exp Brain Res Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Institute for Brain, Cognition and Behavior (IR3C), Barcelona, Spain. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Efficient characterization of inhomogeneity in contraction strain pattern.
Next Document: Phylogenetic and biochemical characterization of the oil-producing yeast Lipomyces starkeyi.