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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 15, Iss. 8 — Aug. 1, 1998
  • pp: 2046–2051

Relationship between facilitation at threshold and suprathreshold contour integration

Cristyn B. Williams and Robert F. Hess  »View Author Affiliations

JOSA A, Vol. 15, Issue 8, pp. 2046-2051 (1998)

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We reevaluate the facilitation at threshold previously reported between aligned micropatterns and assess the role of such lateral spatial interactions in suprathreshold contour integration tasks. Contrary to previous claims, we show that these interactions are phase dependent. Furthermore, they are clearly evident only for foveal viewing, are not evident for curved alignments (>20°), and do not produce any suprathreshold consequence for contrast perception. Such findings question their usefulness for contour integration of smoothly curved suprathreshold paths.

© 1998 Optical Society of America

OCIS Codes
(330.1800) Vision, color, and visual optics : Vision - contrast sensitivity
(350.5030) Other areas of optics : Phase

Original Manuscript: November 20, 1997
Revised Manuscript: March 25, 1998
Manuscript Accepted: March 26, 1998
Published: August 1, 1998

Cristyn B. Williams and Robert F. Hess, "Relationship between facilitation at threshold and suprathreshold contour integration," J. Opt. Soc. Am. A 15, 2046-2051 (1998)

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  1. C. D. Gilbert, “Horizontal integration and cortical dynamics,” Neuron 9, 1–20 (1992). [CrossRef] [PubMed]
  2. D. J. Field, A. Hayes, R. F. Hess, “Contour integration by the human visual system: evidence for a local association field,” Vision Res. 33, 173–193 (1993). [CrossRef] [PubMed]
  3. I. Kovacs, B. Julesz, “A closed curve is much more than an incomplete one: effects of closure on figure-ground segmentation,” Proc. Natl. Acad. Sci. USA 90, 7495–7497 (1993). [CrossRef]
  4. W. H. McIlhagga, K. T. Mullen, “Contour integration with colour and luminance contrast,” Vision Res. 36, 1265–1279 (1996). [CrossRef] [PubMed]
  5. M. W. Pettet, S. P. McKee, N. M. Grzywacz, “Smoothness constrains long range interactions mediating contour detection,” Invest. Ophthalmol. Visual Sci. 37, S954 (1996).
  6. D. J. Field, A. Hayes, R. F. Hess, “The role of phase and contrast polarity in contour integration,” Invest. Ophthalmol. Visual Sci. 38, S999 (1997).
  7. U. Polat, D. Sagi, “Lateral interactions between spatial channels: suppression and facilitation revealed by lateral masking experiments,” Vision Res. 33, 993–999 (1993). [CrossRef] [PubMed]
  8. U. Polat, D. Sagi, “The architecture of perceptual spatial interactions,” Vision Res. 34, 73–78 (1994). [CrossRef] [PubMed]
  9. S.-H. Yen, L. H. Finkel, “Extraction of perceptually salient contours by striate cortical networks,” Vision Res. 38, 719–741 (1998). [CrossRef] [PubMed]
  10. D. G. Pelli, L. Zhang, “Accurate control of contrast on microcomputer displays,” Vision Res. 31, 1337–1350 (1991). [CrossRef] [PubMed]
  11. M. M. Taylor, C. D. Creelman, “PEST: efficient estimates on probability functions,” J. Acoust. Soc. Am. 41, 782–787 (1967). [CrossRef]
  12. C. Yu, D. M. Levi, “Spatial facilitation predicted with end-stopped spatial filters,” Vision Res. 37, 3117–3127 (1997). [CrossRef]
  13. C. Wehrhahn, B. Dresp, “Detection facilitation by collinear stimuli in humans: dependence on strength and sign of contrast,” Vision Res. 38, 423–428 (1998). [CrossRef] [PubMed]
  14. B. Zenger, D. Sagi, “Isolating excitatory and inhibitory nonlinear spatial interactions involved in contrast detection,” Vision Res. 36, 2497–2513 (1996). [CrossRef] [PubMed]
  15. R. F. Hess, S. C. Dakin, “Absence of contour linking in peripheral vision,” Nature (London) 390, 602–604 (1997). [CrossRef]
  16. J. A. Solomon, M. J. Morgan, A. B. Watson, “Evaluating the need for lateral excitation,” presented at 1997 OSA Annual Meeting, Long Beach, Calif., October 11–17, 1997.
  17. M. J. Morgan, B. Dresp, “Contrast detection facilitation by spatially separated targets and inducers,” Vision Res. 35, 1019–1024 (1995). [CrossRef] [PubMed]
  18. R. F. Hess, S. C. Dakin, D. J. Field, “The role of contrast enhancement in the detection and appearance of visual contours,” Vision Res. 38, 783–787 (1998). [CrossRef] [PubMed]
  19. K. T. Mullen, M. A. Losada, “Spatial frequency bandwidths of the Red–Green and luminance mechanisms as a function of eccentricity revealed by notch filtered noise masking,” Invest. Ophthalmol. Visual Sci. 37, S246 (1996).
  20. J. Rovamo, V. Virsu, “An estimation and application of the human cortical magnification factor,” Exp. Brain Res. 37, 495–510 (1979). [CrossRef] [PubMed]
  21. M. W. Cannon, S. C. Fullenkamp, “Spatial interactions in apparent contrast: individual differences in enhancement and suppression effects,” Vision Res. 33, 1685–1695 (1993). [CrossRef] [PubMed]
  22. M. Stemmler, U. Usher, E. Niebur, “Lateral interac-tions in primary visual cortex: a model bridging physiology and psychophysics,” Science 269, 1877–1880 (1995). [CrossRef] [PubMed]
  23. S.-C. Yen, L. H. Finkel, “Salient contour extraction by temporal binding in a cortically-based network,” in Advances in Neural Information Processing Systems, D. Touretzky, M. C. Mozer, M. E. Hasselmo, eds. (MIT Press, Boston, 1996).
  24. D. G. Pelli, “Effects of visual noise,” Ph.D. dissertation (Cambridge University, Cambridge, UK1981).
  25. R. F. Hess, A. Hayes, “The coding of spatial position by the human visual system: effects of spatial scale and retinal eccentricity,” Vision Res. 34, 625–643 (1994). [CrossRef] [PubMed]

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