Contour interaction for foveal acuity targets at different luminances

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F13%3A33144440" target="_blank" >RIV/61989592:15310/13:33144440 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.visres.2013.07.009" target="_blank" >http://dx.doi.org/10.1016/j.visres.2013.07.009</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.visres.2013.07.009" target="_blank" >10.1016/j.visres.2013.07.009</a>

Result language
angličtina
Original language name
Contour interaction for foveal acuity targets at different luminances
Original language description
Single-letter visual acuity is impaired by nearby flanking stimuli, a phenomenon known as contour interaction. We showed previously that when foveal acuity is degraded by a reduction of letter contrast, both the magnitude and angular spatial extent of foveal contour interaction remain unchanged. In this study, we asked whether contour interaction also remains unchanged when foveal visual acuity is degraded by a reduction of the target's background luminance. Percent correct letter identification was measured for isolated, near-threshold black Sloan letters and for letters surrounded by 4 flanking bars in 10 normal observers, 5 at Anglia Ruskin University, UK (ARU) and 5 at Palacky University, Czech Republic (PU). A stepwise reduction in the backgroundluminance over 3 log units resulted in an approximately threefold increase in the near-threshold letter size. At each background luminance, black flanking bars with a width equal to 1 letter stroke were presented at separations between ap
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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