| Matching perceived depth from disparity and from velocity: Modeling and psychophysics. | |
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MedLine Citation:
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PMID: 19963200 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We asked observers to match in depth a disparity-only stimulus with a velocity-only stimulus. The observers' responses revealed systematic biases: the two stimuli appeared to be matched in depth when they were produced by the projection of different distal depth extents. We discuss two alternative models of depth recovery that could account for these results. (1) Depth matches could be obtained by scaling the image signals by constants not specified by optical information, and (2) depth matches could be obtained by equating the stimuli in terms of their signal-to-noise ratios (see Domini & Caudek, 2009). We show that the systematic failures of shape constancy revealed by observers' judgments are well accounted for by the hypothesis that the apparent depth of a stimulus is determined by the magnitude of the retinal signals relative to the uncertainty (i.e., internal noise) arising from the measurement of those signals. |
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Authors:
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Fulvio Domini; Corrado Caudek |
Publication Detail:
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Type: Journal Article Date: 2009-12-05 |
Journal Detail:
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Title: Acta psychologica Volume: 133 ISSN: 1873-6297 ISO Abbreviation: Acta Psychol (Amst) Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-01-27 Completed Date: 2010-04-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0370366 Medline TA: Acta Psychol (Amst) Country: Netherlands |
Other Details:
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Languages: eng Pagination: 81-9 Citation Subset: IM |
Copyright Information:
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Copyright 2009 Elsevier B.V. All rights reserved. |
Affiliation:
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Brown University, Cognitive and Linguistic Sciences, Providence, RI 02912, USA. fulvio.domini@brown.edu |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Attention / physiology Chi-Square Distribution Cues Depth Perception / physiology* Humans Models, Neurological Motion Perception / physiology* Optical Illusions / physiology* Orientation / physiology Pattern Recognition, Visual / physiology* Regression Analysis Sensory Thresholds / physiology* Vision Disparity / physiology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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