scholarly journals Contrast polarity, chromaticity, and stereoscopic depth modulate contextual interactions in vernier acuity

2008 ◽  
Vol 8 (8) ◽  
pp. 12-12 ◽  
Author(s):  
B. Sayim ◽  
G. Westheimer ◽  
M. H. Herzog
Keyword(s):  
Stereoscopic Depth ◽  
Vernier Acuity ◽  
Contrast Polarity ◽  
Contextual Interactions

Some Observations on the Perception of Marroquin Patterns

Perception ◽  
1991 ◽  
Vol 20 (6) ◽  
pp. 727-731 ◽  
Author(s):  
David C Earle
Keyword(s):  
Stereoscopic Depth ◽  
Contrast Polarity ◽  
Pattern Structure ◽  
Opposite Contrast ◽  
Glass Patterns

Demonstrations are presented to show that the perception of structure in Marroquin patterns is disrupted if the dots comprising the pattern have opposite contrast polarity, and also if the dots comprising the pattern are separated in stereoscopic depth. It is also demonstrated that the perception of structure in a Marroquin pattern is made possible if the pattern is separated in stereoscopic depth from ‘noise’ dots, where the pattern structure cannot be perceived in either half of the unfused stereogram. In these respects the perception of Marroquin patterns is similar to the perception of Glass patterns. These findings are thus consistent with the proposal that the perception both of Marroquin and of Glass patterns is based on the construction of virtual lines.

scholarly journals Vernier acuity during image rotation and translation: Visual performance limits

1995 ◽  
Vol 35 (14) ◽  
pp. 1951-1964 ◽  
Author(s):  
Thom Carney ◽  
D. Amnon Silverstein ◽  
Stanley A. Klein
Keyword(s):  
Visual Performance ◽  
Performance Limits ◽  
Vernier Acuity ◽  
Image Rotation

Is reduced vernier acuity in amblyopia due to position, contrast or fixation deficits?

1985 ◽  
Vol 25 (1) ◽  
pp. 55-66 ◽  
Author(s):  
Arthur Bradley ◽  
R.D. Freeman
Keyword(s):  
Vernier Acuity
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