Abstract
Luminance- or color-defined ±45°-oriented bars were arranged to yieldsingle-feature ordouble-conjunction texture pairs. In the former, the global edge between two regions is formed by differences in one attribute (orientation, or color, or luminance). In the color/orientation double-conjunction pair, one region has +45° red and −45° green textels, the other −45° red and +45° green textels (the lumi-nance/orientation double-conjunction pair is similar); such a pair contains a single-feature orientation edge in the subset of red (or green) textels, and a color edge in the subset of +45° (or −45°) textels. We studied whether edge detection improved when observers were instructed to attend to such subsets. Two groups of observers participated: in the test group, the stimulus construction was explained to observers, and they were cued to attend to one subset. The control group ran through the same total number of sessions without explanations/cues. The effect of cuing was weak but statistically significant. Feature cuing was more effective for color/orientation than for luminance/orientation conjunctions. Within each stimulus category, performance was nearly the same no matter which subset was attended to. On average, a global performance improvement occurred over time even without cuing, but some observers did not improve with either cuing or practice. We discuss these results in the context of one-versus two-stage segregation theories, as well as by reference to signal enhancement versus noise suppression. We conclude that texture segregation can be improved by attentional strategies aimed to isolate specific stimulus features.
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Agonie.C., &Gorea.A. (1993). Equivalent luminance contrast of red-green drifting stimuli: Dependency on luminance-color interactions and on the psychophysical task.Journal of the Optical Society of America A,10, 1341 -1352.
Ahissar, M., &Hochstein, S. (1997). Task difficulty and the specificity of perceptual learning.Nature,387, 401–406.
Boring, E. G. (1950).A history of experimental psychology (2nd ed.). New York: Appleton-Century-Crofts.
Bravo.M. J., &Nakayama.K. (1992). The role of attention in different visual-search tasks.Perception & Psychophysics,51, 465–472.
Cavanagh, P. (1992). Attention based motion perception.Science,257, 1563–1565.
Davis, E. T., Kramer, P., &Graham, N. (1983). Uncertainty about spatial requency, spatial position, or contrast of visual patterns.Perception & Psychophysics,33, 20–28.
De Valois, R. L., &De Valois, K. K. (1988).Spatial vision. New York: Oxford University Press.
Dosher, B. A., &Lu, Z. L. (1997). Attention to location mediated by internal noise reduction.Investigative Ophthalmology & Visual Science,38(Suppl.), S687.
Duncan, J., &Humphreys, G. W. (1992). Beyond the search surface: Visual search and attentional engagement.Journal of Experimental Psychology: Human Perception & Performance,18, 578–588.
Edwards, D. P., Purpura, K., &Kaplan, E. (1995). Contrast sensitivity and spatial frequency response of primate cortical neurons in and around the cytochrome oxidase blobs.Vision Research,35, 1501–1523.
Egeth, H. E., Virzi, R. A., &Garbart, H. (1984). Searching for conjunctively defined targets.Journal of Experimental Psychology: Human Perception & Performance,10, 32–39.
Friedman-Hill, S., &Wolfe, J. W. (1995). Second-order parallel processing: Visual search for the odd item in a subset.Journal of Experimental Psychology: Human Perception & Performance,21,531–551.
Gorea, A., &Papathomas, T. V. (1989). Motion processing by chromatic and achromatic visual pathways.Journal of the Optical Society of America A,6, 590–602.
Gorea, A., &Papathomas, T. V. (1991). Texture segregation by chromatic and achromatic visual pathways: An analogy with motion processing.Journal of the Optical Society of America A,8, 386–393.
Gorea, A., &Papathomas, T. V. (1993). Double-opponency as a generalized concept in texture segregation illustrated with color, luminance and orientation defined stimuli.Journal of the Optical Society of America A,10, 1451–1462.
Gorea, A., Papathomas, T. V, &Kovács, I. (1993). Motion perception with spatiotemporally matched chromatic and achromatic information reveals a “slow” and “fast” motion system.Vision Research,33,2515–2534.
Green, B. F.. &Andersen, L. K. (1956). Color coding in a visual search task.Journal of Experimental Psychology,51,19–24.
Humphreys, G. W. (1981). Flexibility of attention between stimulus dimensions.Perception & Psychophysics,30, 291–302.
Kingdom, F., Moulden, B., &Collyer, S. (1992). A comparison between colour and luminance contrast in a spatial linking task.Vision Research,11, 709–717.
Kramer, P., Graham, N., &Yager, D. (1985). Simultaneous measurement of spatial-frequency summation and uncertainty effects.Journal of the Optical Society of America A,2, 1533–1542.
Landy, M. S., Maloney, L. T., Johnston, E. B., &Young, M. (1995). Measurement and modeling of depth cue combination: In defense of weak fusion.Vision Research,35, 389–412.
Leventhal, A. G., Thompson, K. G., Liu, D., Zhou, Y, &Ault, S. J. (1995). Concomitant sensitivity to orientation, direction and color of cells in layers 2, 3 and 4 of monkey striate cortex.Journal of Neuroscience,15, 1808–1818.
Livingstone, M. S., &Hubel, D. H. (1984). Anatomy and physiology of a color system in the primate visual cortex.Journal of Neuroscience,4, 309–356.
Maljkovic, V, &Nakayama, K. (1994). Priming of pop-out: I. Role of features.Memory & Cognition,22, 657–672.
Mcleod, P., Driver, J., &Crisp, J. (1988). Visual search for a conjunction of movement and form is parallel.Nature,332, 154–155.
Nakayama, K., &Silverman, G. H. (1986). Serial and parallel processing of visual search conjunctions.Nature,320, 264–265.
Palmer, J. (1994). Set-size effects in visual search: The effect of attention is independent of the stimulus for simple tasks.Vision Research,34, 1703–1721.
Papathomas.T. V, Kovács, I., Gorea, A., &Julesz, B. (1995). A unified approach to the perception of motion, stereo and static-flow patterns.Behavior Research Methods, Instruments, & Computers,27, 419–432.
Pelli, D. (1985). Uncertainty explains many aspects of visual contrast detection and discrimination.Journal of the Optical Society of America A,2, 1508–1532.
Quinlan, P. T., &Humphreys, G. W. (1987). Visual search for targets defined by combinations of color, shape and size: An examination of the task constraints on feature and conjunction searches.Perception & Psychophysics,41, 455–472.
Raalimakers, J. G. W. &De Weert, C. M. M. (1975). Linear and nonlinear opponent color coding.Perception & Psychophysics,18, 474–480.
Raymond, J., O’donnell, H. L., &Tipper, S. (1997). Attention modulates global motion sensitivity.Investigative Ophthalmology & Visual Science,38(Suppl.), S369.
Rubin, N., Nakayama, K., &Shapley, R. (1997). Abrupt learning and retinal size specificity in illusory contour perception.Current Biology,7,461–467.
Shiu, L. P., &Pashler, H. (1994a). Negligible effect of spatial precuing on identification of single dots.Journal of Experimental Psychology: Human Perception & Performance,20, 1037–1054.
Shiu, L. P., &Pashler, H. (1994b). Spatial attention and vernier acuity.Vision Research,35, 337–343.
Sireteanu, R., &Rettenbach, R. (1995). “Early vision” is not so early after all: Texture segmentation in children and adolescents.Investigative Ophthalmology & Visual Science,36(Suppl.), S443.
Smith, S. L. (1962). Color coding and visual search.Journal of Experimental Psychology,64, 434–440.
Treisman, A. (1985). Preattentive processing in vision.Computer Vision, Graphics & Image Processing,31, 156–177.
Treisman, A., &Gelade, G. (1980). A feature integration theory of attention.Cognitive Psychology,12, 97–136.
Treisman, A., &Sato, S. (1990). Conjunction search revisited.Journal of Experimental Psychology: Human Perception & Performance,16, 459–478.
Tsal, Y., &Lavie, N. (1988). Attending to color and shape: The special role of location in selective visual processing.Perception & Psychophysics,44, 15–21.
Von Der Heydt, R., &Dürsteler, M. R. (1993). Visual search: Monkeys detect conjunctions as fast as features.Investigative Ophthalmology & Visual Science,34(Suppl.), 1288.
Wolfe, J. M. (1992). “Effortless” texture segmentation and “parallel” visual search are not the same.Vision Research,32, 757–763.
Wolfe, J. M. (1994). Guided Search 2: A revised model of visual search.Psychonomic Bulletin & Review,1, 202–238.
Wolfe, J. M., Cave, K. R., &Franzel, S. L. (1989). Guided search: An alternative to the feature integration model for visual search.Journal of Experimental Psychology: Human Perception & Performance,15, 419–433.
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This work was supported by Grant DRET 94-047 to A.G., and J. S. McDonnell Foundation Grant 95-60 to T.VP. and A.F. Patrick Cavanagh was very helpful in discussing attention-related issues with one of us.
Accepted by previous editor. Myron L. Braunstein
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Papathomas, T.V., Gorea, A., Feher, A. et al. Attention-based texture segregation. Perception & Psychophysics 61, 1399–1410 (1999). https://doi.org/10.3758/BF03206189
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DOI: https://doi.org/10.3758/BF03206189