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Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing
The structural similarity of objects has been an important variable in explaining why some objects are easier to categorize at a superordinate level than to individuate, and also why some patients with brain injury have more difficulties in recognizing natural (structurally similar) objects than art...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5563126/ https://www.ncbi.nlm.nih.gov/pubmed/28861027 http://dx.doi.org/10.3389/fpsyg.2017.01404 |
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author | Gerlach, Christian |
author_facet | Gerlach, Christian |
author_sort | Gerlach, Christian |
collection | PubMed |
description | The structural similarity of objects has been an important variable in explaining why some objects are easier to categorize at a superordinate level than to individuate, and also why some patients with brain injury have more difficulties in recognizing natural (structurally similar) objects than artifacts (structurally distinct objects). In spite of its merits as an explanatory variable, structural similarity is not a unitary construct, and it has been operationalized in different ways. Furthermore, even though measures of structural similarity have been successful in explaining task and category-effects, this has been based more on implication than on direct empirical demonstrations. Here, the direct influence of two different measures of structural similarity, contour overlap and within-item structural diversity, on object individuation (object decision) and superordinate categorization performance is examined. Both measures can account for performance differences across objects, but in different conditions. It is argued that this reflects differences between the measures in whether they tap: (i) global or local shape characteristics, and (ii) between- or within-category structural similarity. |
format | Online Article Text |
id | pubmed-5563126 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-55631262017-08-31 Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing Gerlach, Christian Front Psychol Psychology The structural similarity of objects has been an important variable in explaining why some objects are easier to categorize at a superordinate level than to individuate, and also why some patients with brain injury have more difficulties in recognizing natural (structurally similar) objects than artifacts (structurally distinct objects). In spite of its merits as an explanatory variable, structural similarity is not a unitary construct, and it has been operationalized in different ways. Furthermore, even though measures of structural similarity have been successful in explaining task and category-effects, this has been based more on implication than on direct empirical demonstrations. Here, the direct influence of two different measures of structural similarity, contour overlap and within-item structural diversity, on object individuation (object decision) and superordinate categorization performance is examined. Both measures can account for performance differences across objects, but in different conditions. It is argued that this reflects differences between the measures in whether they tap: (i) global or local shape characteristics, and (ii) between- or within-category structural similarity. Frontiers Media S.A. 2017-08-17 /pmc/articles/PMC5563126/ /pubmed/28861027 http://dx.doi.org/10.3389/fpsyg.2017.01404 Text en Copyright © 2017 Gerlach. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Psychology Gerlach, Christian Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing |
title | Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing |
title_full | Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing |
title_fullStr | Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing |
title_full_unstemmed | Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing |
title_short | Different Measures of Structural Similarity Tap Different Aspects of Visual Object Processing |
title_sort | different measures of structural similarity tap different aspects of visual object processing |
topic | Psychology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5563126/ https://www.ncbi.nlm.nih.gov/pubmed/28861027 http://dx.doi.org/10.3389/fpsyg.2017.01404 |
work_keys_str_mv | AT gerlachchristian differentmeasuresofstructuralsimilaritytapdifferentaspectsofvisualobjectprocessing |