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Zelinsky GJ 《Psychonomic bulletin & review》2003,10(3):533-555
A behavioral and computational treatment of change detection is reported. The behavioral task was to judge whether a single
object substitution change occurred between two “flickering” 9-object scenes. Detection performance was found to vary with
the similarity of the changing objects; object changes violating orientation and category yielded the fastest and most accurate
detection responses. To account for these data, theBOLAR model was developed, which uses color, orientation, and scale selective filters to compute the visual dissimilarity between
the pre- and postchange objects from the behavioral study. Relating the magnitude of the BOLAR difference signals to change
detection performance revealed that object pairs estimated as visually least similar were the same object pairs most easily
detected by observers. The BOLAR model advances change detection theory by (1) demonstrating that the visual similarity between
the change patterns can account for much of the variability in change detection behavior, and (2) providing a computational
technique for quantifying these visual similarity relationships for real-world objects. 相似文献
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Gregory R. Peterson 《Zygon》1999,34(1):139-149
Beginning with the End represents an excellent collection of articles devoted to the thought of Wolfhart Pannenberg. This volume includes many of the most important thinkers in the science-religion dialogue and shows as well the importance and impact of Pannenberg's theology. This response addresses themes that surface in several of the articles: What is religion? What is science? What is theology? What is God? On some of these themes there is agreement, on others sharp disagreement. The conclusion also considers what this volume suggests about the future of Pannenberg's theology. 相似文献
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Theoretical Medicine and Bioethics - 相似文献
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Manish Singh Gregory D. Seyranian Donald D. Hoffman 《Attention, perception & psychophysics》1999,61(4):636-660
Many researchers have proposed that, for the purpose of recognition, human vision parses shapes into component parts. Precisely how is not yet known. The minima rule for silhouettes (Hoffman & Richards, 1984) defines boundary points at which to parse but does not tell how to use these points to cut silhouettes and, therefore, does not tell what the parts are. In this paper, we propose the short-cut rule, which states that, other things being equal, human vision prefers to use the shortest possible cuts to parse silhouettes. We motivate this rule, and the well-known Petter’s rule for modal completion, by the principle of transversality. We present five psychophysical experiments that test the short-cut rule, show that it successfully predicts part cuts that connect boundary points given by the minima rule, and show that it can also create new boundary points. 相似文献
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Gregory L. Craig Lew B. Stelmach W. James Tam 《Attention, perception & psychophysics》1999,61(5):935-942
In two experiments, we examined whether voluntary and reflexive saccades shared a common fixation disengagement mechanism, Participants were required to perform a variety of tasks, each requiring a different level of information processing of the display prior to execution of the saccade. In Experiment 1, participants executed either a prosaccade or an antisaccade upon detecting a stimulus array. In Experiment 2, participants executed a prosaccade to a stimulus array only if the array contained a target item. The target could be a line (easy search) or a digit (difficult search). The critical manipulation in both experiments was the relative timing between the removal of the fixation stimulus and the onset of the stimulus array. In both experiments, it was found that saccadic latencies were shortest when the fixation stimulus was removed before the onset of the stimulus array—a gap effect. It was concluded that reflexive and voluntary saccades share a common fixation disengagement mechanism that is largely independent of higher level cognitive processes. 相似文献