scholarly journals EFFECT OF LUMINANCE ON LATENCY POWER FUNCTION IN THE PERIPHERAL VISUAL FIELD

1977 ◽  
Vol 48 (5) ◽  
pp. 296-302 ◽  
Author(s):  
NAOYUKI OSAKA
Keyword(s):  
Visual Field ◽  
Power Function ◽  
Peripheral Visual Field

Effect of Peripheral Visual Field Size upon Visual Search in Children and Adults

Perception ◽  
1980 ◽  
Vol 9 (4) ◽  
pp. 451-455 ◽  
Author(s):  
Naoyuki Osaka
Keyword(s):  
Visual Search ◽  
Visual Field ◽  
Power Function ◽  
Age Groups ◽  
Field Size ◽  
Peripheral Visual Field ◽  
Cube Root ◽  
Age Related

Twenty observers in each of the age groups, three, four, five, and twenty-one years, were asked to identify pictures displayed through five different sizes of peephole. Recognition latency changed as a cube-root power function of aperture area. It was found that latency decreased as age and area increased. However, the exponent of the power function showed little age-related change. Effectiveness of the peripheral visual field size was discussed in terms of magnitude of the exponent.

Target Size and Luminance in Apparent Brightness of the Peripheral Visual Field

1975 ◽  
Vol 41 (1) ◽  
pp. 49-50 ◽  
Author(s):  
Naoyuki Osaka
Keyword(s):  
Visual Field ◽  
Power Function ◽  
Target Size ◽  
Peripheral Visual Field ◽  
Apparent Brightness ◽  
Magnitude Estimates

Four target sizes between 15 and 120 min. of arc with six luminance levels covering the range between 398.1 and 1.26 cd/m2 in steps of .5 log units were presented to 0, 20, 40, 60, and 80° nasal retinal loci. In both peripheral and foveal viewing, magnitude estimates to apparent brightness judged by 12 Ss changed as a function of target size and luminance. The exponent of the power function was not dependent on retinal loci but on target size. However, when target size increased, the apparent brightness was slightly greater with peripheral viewing than with foveal viewing.

scholarly journals The Munker–White Effect and Chromatic Induction Share Similar Nonlinear Response Properties

2010 ◽  
Vol 23 (3) ◽  
pp. 223-240
Author(s):  
Chien-Chung Chen ◽  
Sarina Hui-Lin Chien ◽  
Yong-Jun Lin
Keyword(s):  
Visual Field ◽  
Power Function ◽  
Nonlinear Response ◽  
Spatial Configuration ◽  
Lateral Interaction ◽  
Test Patch ◽  
Response Properties ◽  
Modulation Model ◽  
Bull's Eye ◽  
Color Induction

AbstractThe brightness or color appearance of a region may be altered by the presence of a pattern surrounding it in the visual field. The Munker–White effect (grating surround) and brightness or color induction from concentric annuli ('bull's-eye' surround) are two examples. We examined whether these two phenomena share similar properties. In the asymmetric matching experiment, the task of an observer was to adjust the appearance of a matching patch to match the appearance of a test patch embedded in one of the two types (square wave grating or concentric annuli) of inducing surrounds (inducers). The inducer modulated in one of three color directions (isochromatic: ±(L + M + S) and isoluminance: ±(L – M) or ±S). Each inducer type and color direction had two opposing phases and four contrast levels. The results show that the induced appearance shift increases as a power function of the inducer contrast, regardless of the spatial configuration of the inducer. Further analysis showed that a sensitivity modulation model of lateral interaction could explain both induction effects.

scholarly journals Evaluation of Central and Peripheral Visual Field Concordance in Glaucoma

2016 ◽  
Vol 57 (6) ◽  
pp. 2797 ◽  
Author(s):  
Jamie L. Odden ◽  
Aleksandra Mihailovic ◽  
Michael V. Boland ◽  
David S. Friedman ◽  
Sheila K. West ◽  
...  
Keyword(s):  
Visual Field ◽  
Peripheral Visual Field

scholarly journals Cortical responses to moderate- and high-speed gratings extending 60° in the peripheral visual field

2016 ◽  
Vol 16 (12) ◽  
pp. 1179
Author(s):  
Kyriaki Mikellidou ◽  
Francesca Frijia ◽  
Domenico Montanaro ◽  
Vincenzo Greco ◽  
David Burr ◽  
...  
Keyword(s):  
Visual Field ◽  
High Speed ◽  
Peripheral Visual Field ◽  
Cortical Responses
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