نتایج جستجو برای: contrast sensitivity functions
تعداد نتایج: 1162208 فیلتر نتایج به سال:
A training procedure for obtaining contrast-sensitivity functions within a single session in monkeys
this study purported to compare and contrast the use of self-mention and evidentials as two mtadiscourse features in opinion columns of persian and english newspapers. the theoretical basis of this study is the idea that metadiscourse features vary across cultural boundaries. for this purpose, 150 persian and 150 english opinion columns were collected based on three factors of topic, audience a...
Regan and Beverley [Regan, D., & Beverley, K. I. (1985). Postadaptation orientation discrimination. Journal of the Optical Society of America A, 2(2), 147-155] previously demonstrated that adapting to an oriented visual stimulus improves sensitivity to subtle orientation differences while impairing contrast sensitivity. Here, we investigated whether practice-based improvements in orientation se...
Introduction: The present study was carried out to compare contrast sensitivity among three groups of professional welders including (1) those who use gas metal Arc welding (GMAW) (2) those who use shield metal Arc welding (SMAW) and the group that uses resistance welding. . Material and Method: In this research, all the welders who use GMAW, SMAW and resistance welding working in an industry...
One of the primary objectives of early visual processing is the detection of luminance variations, often termed image contrast. Normal observers can differ in this ability by at least a factor of 4, yet this variation is typically overlooked, and has never been convincingly explained. This study uses two techniques to investigate the main source of individual variations in contrast sensitivity....
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