Abstract
Under tachistoscopic viewing conditions, precuing the location of potential lung tumorlargets in chest X-ray images was less effective than precuing followed by bounding the region of interest (ROI) with a circle directly on the image. Detection performance increased as the image was systematically masked so that its size approximated that of the circled ROI. When viewing time was extended to allow shifts in eye position, circling the ROI was found to restrict the dispersion of fixations and increase the accuracy of fixating the target tumor. When targets were placed outside the ROI, the circle inhibited their detection relative to detection of targets inside the circled region. These findings suggest that cuing by circling restricts target detection to the ROI, and by doing so reduces the interfering effects of outside distractors that compete with the target for attention.
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This work was supported by Grant CA-32870 from the National Cancer Institute, USPHS. Part of the work contained herein was based on the doctoral dissertation of E.A.K,, Department of Psychology, Temple University.
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Krupinski, E.A., Nodine, C.F. & Kundel, H.L. Perceptual enhancement of tumor targets in chest X-ray images. Perception & Psychophysics 53, 519–526 (1993). https://doi.org/10.3758/BF03205200
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DOI: https://doi.org/10.3758/BF03205200