| Gestalt factors modulate basic spatial vision. | |
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MedLine Citation:
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PMID: 20483840 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Human perception of a stimulus varies depending on the context in which the stimulus is presented. Such contextual modulation has often been explained by two basic neural mechanisms: lateral inhibition and spatial pooling. In the present study, we presented observers with a vernier stimulus flanked by single lines; observers' ability to discriminate the offset direction of the vernier stimulus deteriorated in accordance with both explanations. However, when the flanking lines were part of a geometric shape (i.e., a good Gestalt), this deterioration strongly diminished. These findings cannot be explained by lateral inhibition or spatial pooling. It seems that Gestalt factors play an important role in contextual modulation. We propose that contextual modulation can be used as a quantitative measure to investigate the rules governing the grouping of elements into meaningful wholes. |
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Authors:
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B Sayim; G Westheimer; M H Herzog |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-04-12 |
Journal Detail:
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Title: Psychological science Volume: 21 ISSN: 1467-9280 ISO Abbreviation: Psychol Sci Publication Date: 2010 May |
Date Detail:
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Created Date: 2010-05-20 Completed Date: 2010-09-30 Revised Date: 2011-05-20 |
Medline Journal Info:
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Nlm Unique ID: 9007542 Medline TA: Psychol Sci Country: United States |
Other Details:
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Languages: eng Pagination: 641-4 Citation Subset: IM |
Affiliation:
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Laboratory of Psychophysics, Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland. bilge.sayim@epfl.ch |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Attention* Depth Perception Female Gestalt Theory* Humans Inhibition (Psychology) Male Optical Illusions* Orientation* Pattern Recognition, Visual* Perceptual Masking Psychophysics Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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