In search of an elusive hard threshold: a test of observer’s ability to order sub-threshold stimuli
نویسندگان
چکیده
منابع مشابه
In search of an elusive hard threshold: a test of observer’s ability to order sub-threshold stimuli
The contrast transducer function (d' vs. contrast) for sine gratings was claimed to come up from some non-zero contrast value rather than from the origin. This implies that there is a point (a hard threshold) on the grating contrast axis below which observers could not distinguish between presentations containing gratings and those containing a homogeneous field. We studied the ability to order...
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ژورنال
عنوان ژورنال: Vision Research
سال: 2004
ISSN: 0042-6989
DOI: 10.1016/j.visres.2003.09.015