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  • Title: The use of different cues in vernier acuity.
    Author: Watt RJ, Morgan MJ, Ward RM.
    Journal: Vision Res; 1983; 23(10):991-5. PubMed ID: 6649444.
    Abstract:
    The roles of the various cues in the traditional vernier target are examined. We conclude that there are at least two mechanisms by which vernier acuities of the order of 5 sec arc may be obtained. The two cues are the overall slope of the target, and the relative positional differences. By using vernier targets that are degraded in two different ways, we can demonstrate each mechanism.
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