Exposure Duration and Effective Figure-Ground Contrast

The pre-and post-exposure fields in the tachistoscopic presentation are assumed to reduce the apparent contrast of the figure by brightness summation. A matching procedure was used to measure this effect. Apparent contrast rises linearly with duration, but only in the upper range. Further observations confirm the suggestion that the pre-and post-exposure fields retard the formation of bounding contours with a further reduction of apparent contrast at short durations as a result. It is indicated that the contrast-matching method provides a short-cut technique for the measurement of the temporal range of brightness summation.

[1]  W. R. Biersdorf.  Critical duration in visual brightness discrimination for retinal areas of various sizes. , 1955, Journal of the Optical Society of America.

[2]  R. Dodge.  An experimental study of visual fixation , 1907 .

[3]  R. M. Herrick.  Foveal luminance discrimination as a function of the duration of the decrement or increment in luminance. , 1956, Journal of comparative and physiological psychology.

[4]  Visual acuity: an analysis of the stimulus situation. , 1955, American journal of optometry and archives of American Academy of Optometry.

[5]  Miles A. Tinker,et al.  Light, vision and seeing. , 1945 .

[6]  G. Sperling.  A Model for Visual Memory Tasks1 , 1963, Human factors.

[7]  Magdalen Dorothea Vernon,et al.  A further study of visual perception , 1952 .

[8]  R. W. PICKFORD.  Light, Vision and Seeing , 1948, Nature.

[9]  C. H. Graham,et al.  BRIGHTNESS DISCRIMINATION AS A FUNCTION OF THE DURATION OF THE INCREMENT IN INTENSITY , 1938, The Journal of general physiology.

[10]  D. Kahneman.  Time-intensity reciprocity under various conditions of adaptation and backward masking. , 1966, Journal of experimental psychology.

[11]  Emanuel Averbach,et al.  The span of apprehension as a function of exposure duration , 1963 .

[12]  R. M. Herrick.  Foveal luminance discrimination as a function of the duration of the decrement or increment in luminance. , 1956 .

[13]  C. H. Graham,et al.  Notes on some interrelations of sensory psychology, perception, and behavior. , 1962 .

[14]  C. Eriksen,et al.  FROM RECOGNITION AT BRIEF DURATIONS AS A FUNCTION OF ADAPTING FIELD AND INTERVAL BETWEEN STIMULATIONS. , 1963, Journal of experimental psychology.

[15]  M. Keller.  The relation between the critical duration and intensity in brightness discrimination. , 1941 .