The detection and discrimination of spatial offsets
نویسندگان
چکیده
منابع مشابه
The detection and discrimination of spatial offsets
By detection of spatial offsets is meant the ability to indicate whether or not a given (vernier) stimulus has a spatial offset. Discrimination, on the other hand, implies that the direction of offset has been correctly identified. We compared vernier thresholds for these two tasks and found a consistent difference by a factor of around 2 in favour of discrimination. This is to say that observe...
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Previous work has shown that the ratio between the thresholds for detecting a spatial (vernier) offset and discriminating its direction is about two, if the targets are presented to the fovea, whether at a fixed, vertical, orientation, or a variable orientation. In the present study, vernier detection and discrimination thresholds were measured at the fovea and at two retinal eccentricities (3 ...
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ژورنال
عنوان ژورنال: Vision Research
سال: 1995
ISSN: 0042-6989
DOI: 10.1016/0042-6989(94)e0082-v