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    FURTHER STUDIES OF THE DETECTABILITY OF DEGRADED VISUAL SIGNALS

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    Author
    Wheeler, Lawrence
    Issue Date
    1973-06
    Keywords
    Optics.
    Signal detection.
    Signal generators.
    Physiological optics.
    Optical images.
    Visual perception.
    
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    Publisher
    Optical Sciences Center, University of Arizona (Tucson, Arizona)
    Rights
    Copyright © Arizona Board of Regents
    Collection Information
    This title from the Optical Sciences Technical Reports collection is made available by the College of Optical Sciences and the University Libraries, The University of Arizona. If you have questions about titles in this collection, please contact repository@u.library.arizona.edu.
    Abstract
    Observers responded to abstract forms (quadrigons) in six experiments, under a signal detection paradigm. Duration of stimulus exposure was shown to have strong effects upon detection accuracy (two studies); immediate feedback of accuracy information to observers affected performance chiefly by influencing guessing bias, not sensitivity (two studies); images that had been blurred and then deblurred by means of an analog device were compared with unblurred originals, and the effects of the retrieval process (deblurring) were characterized quantitatively by a signal detection index (one study); and electroencephalographic correlates of signal detection responses were found to vary with performance accuracy and observer confidence (one study). Discussions of the theory of signal detectability and of electroencephalography, as tools in the study of image quality and of observer sensitivity, are included in the report.
    Description
    QC 351 A7 no. 78
    Series/Report no.
    Optical Sciences Technical Report 78
    Collections
    Optical Sciences Technical Reports

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