Spatial tuning of static and dynamic local stereopsis

Schor, Clifton M.; Wood, Ivan C. J.; Ogawa, Jane

doi:10.1016/0042-6989(84)90111-1

Cited by 112 publications

(50 citation statements)

References 24 publications

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“…Scale processing is a low-level task which has been shown to precede many early visual tasks such as motion (Morgan, 1992), stereopsis (Legge & Gu, 1989;Schor, Wood & Ogawa, 1984), depth perception (Marshall, Burbeck, Ariely, Rolland, & Martin, 1996) and saccade programming (Findlay, Brogan, & Wenban-Smith, 1993). Following the psychophysics of sinewave gratings, psychological and computational recognition research has often assumed that coarse blobs should be recognized before fine boundary edges in complex visual stimuli such as faces, objects, and scenes.…”

Section: Discussionmentioning

confidence: 99%

Coarse Blobs or Fine Edges? Evidence That Information Diagnosticity Changes the Perception of Complex Visual Stimuli

Oliva

Schyns

1997

Cognitive Psychology

368

272

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Section: Discussionmentioning

confidence: 99%

Coarse Blobs or Fine Edges? Evidence That Information Diagnosticity Changes the Perception of Complex Visual Stimuli

Oliva

Schyns

1997

Cognitive Psychology

368

272

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“…More recently, Clifton Schor and colleagues have conducted a systematic characterization of our sensitivity to depth from transient and sustained disparity (Schor et al, 2001(Schor et al, , 1998(Schor et al, , 1984Edwards et al, 2000Edwards et al, , 1999aPope et al, 1999). These studies have shown different 1) spatial tuning, 2) tendency to depth-alias, 3) orientation tuning, 4) sensitivity to spatial envelope size, and 5) tolerance for opposite polarity, for long vs. short duration depth stimuli.…”

Section: Functional Organizationmentioning

confidence: 99%

How to use individual differences to isolate functional organization, biology, and utility of visual functions; with illustrative proposals for stereopsis

Wilmer¹

2008

Spatial Vis

111

110

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This paper is a call for greater use of individual differences in the basic science of visual perception. Individual differences yield insights into visual perception's functional organization, underlying biological/environmental mechanisms, and utility. I first explain the general approach advocated and where it comes from. Second, I describe five principles central to learning about the nature of visual perception through individual differences. Third, I elaborate on the use of individual differences to gain insights into the three areas mentioned above (function, biology/environment, utility), in each case describing the approach advocated, presenting model examples from the literature, and laying out illustrative research proposals for the case of stereopsis.

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“…The perceived depth of the rivalling gratings may be seen to lie in the plane of the ¢xation spot (see also Wurger & Landy 1989). Schor et al (1984) have measured DDTs for ¢rst-order stimuli. They used di¡erence-of-Gaussian (DoG) signals and found that the DDTs decreased as the peak frequency of the DoG functions increased (up to 2.5 cpd).…”

Section: K Langley and Others Linear And Nonlinear Transparencies Inmentioning

confidence: 99%

Linear and nonlinear transparencies in binocular vision

Langley

Fleet

Hibbard

1998

Proc. R. Soc. Lond. B

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When the product of a vertical square-wave grating (contrast envelope) and a horizontal sinusoidal grating (carrier) are viewed binocularly with di¡erent disparity cues they can be perceived transparently at di¡erent depths. We found, however, that the transparency was asymmetric; it only occurred when the envelope was perceived to be the overlaying surface. When the same two signals were added, the percept of transparency was symmetrical; either signal could be seen in front of or behind the other at di¡erent depths. Di¡erences between these multiplicative and additive signal combinations were examined in two experiments. In one, we measured disparity thresholds for transparency as a function of the spatial frequency of the envelope. In the other, we measured disparity discrimination thresholds. In both experiments the thresholds for the multiplicative condition, unlike the additive condition, showed distinct minima at low envelope frequencies. The di¡erent sensitivity curves found for multiplicative and additive signal combinations suggest that di¡erent processes mediated the disparity signal. The data are consistent with a two-channel model of binocular matching, with multiple depth cues represented at single retinal locations.

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Spatial tuning of static and dynamic local stereopsis

Cited by 112 publications

References 24 publications

Coarse Blobs or Fine Edges? Evidence That Information Diagnosticity Changes the Perception of Complex Visual Stimuli

Coarse Blobs or Fine Edges? Evidence That Information Diagnosticity Changes the Perception of Complex Visual Stimuli

How to use individual differences to isolate functional organization, biology, and utility of visual functions; with illustrative proposals for stereopsis

Linear and nonlinear transparencies in binocular vision

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