Contrast Energy and Contour Interaction
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73597294" target="_blank" >RIV/61989592:15310/19:73597294 - isvavai.cz</a>
Result on the web
<a href="https://journals.lww.com/optvissci/Abstract/2019/12000/Contrast_Energy_and_Contour_Interaction.9.aspx" target="_blank" >https://journals.lww.com/optvissci/Abstract/2019/12000/Contrast_Energy_and_Contour_Interaction.9.aspx</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1097/OPX.0000000000001457" target="_blank" >10.1097/OPX.0000000000001457</a>
Alternative languages
Result language
angličtina
Original language name
Contrast Energy and Contour Interaction
Original language description
PURPOSE The discrimination of acuity targets is impaired by the presence of nearby flanking contours, a phenomenon known as contour interaction. METHODS In this study, we measured percent correct identification for threshold size, high-contrast Sloan letters at the fovea and at 5 degrees in the inferior visual field for different combinations of flanking-bar width, and Weber contrast corresponding to specific fixed values of contrast energy (width x contrast, in %-min arc). RESULTS For flanking bars with low-contrast energy, contour interaction exhibited no systematic dependence on the flanking-bar width. However, when the flanking bars had higher contrast energy, narrower high-contrast bars produced significantly greater contour interaction than wider bars of lower contrast. CONCLUSIONS The results are consistent with the interpretation that contour interaction depends primarily on the contrast energy of flanking contours when their contrast energy is low. As the contrast energy of the flanking contours increases, the magnitude of contour interaction depends on the flanker contrast. For high-contrast flanking contours, the magnitude of contour interaction saturates when the width of the flanking contours is approximately 20% of letter size.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
30207 - Ophthalmology
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
OPTOMETRY AND VISION SCIENCE
ISSN
1040-5488
e-ISSN
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Volume of the periodical
96
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
940-947
UT code for WoS article
000504871500009
EID of the result in the Scopus database
2-s2.0-85076460319