scholarly journals P1-13: Color Induction from Surround Color under Interocular Suppression

i-Perception ◽  
10.1068/if627 ◽  
2012 ◽  
Vol 3 (9) ◽  
pp. 627-627
Author(s):  
Ichiro Kuriki ◽  
Koji Horiuchi ◽  
Rumi Tokunaga ◽  
Kazumichi Matsumiya ◽  
Satoshi Shioiri
Keyword(s):  
Interocular Suppression ◽  
Color Induction

Chromatic induction from surrounding stimuli under perceptual suppression

2014 ◽  
Vol 31 (6) ◽  
pp. 387-400 ◽  
Author(s):  
KOJI HORIUCHI ◽  
ICHIRO KURIKI ◽  
RUMI TOKUNAGA ◽  
KAZUMICHI MATSUMIYA ◽  
SATOSHI SHIOIRI
Keyword(s):  
Visual Processing ◽  
Model Fitting ◽  
Gain Control ◽  
Color Appearance ◽  
Induction Effect ◽  
Test Field ◽  
Chromatic Contrast ◽  
Interocular Suppression ◽  
Opponent Color ◽  
Color Induction

AbstractThe appearance of colors can be affected by their spatiotemporal context. The shift in color appearance according to the surrounding colors is called color induction or chromatic induction; in particular, the shift in opponent color of the surround is called chromatic contrast. To investigate whether chromatic induction occurs even when the chromatic surround is imperceptible, we measured chromatic induction during interocular suppression. A multicolor or uniform color field was presented as the surround stimulus, and a colored continuous flash suppression (CFS) stimulus was presented to the dominant eye of each subject. The subjects were asked to report the appearance of the test field only when the stationary surround stimulus is invisible by interocular suppression with CFS. The resulting shifts in color appearance due to chromatic induction were significant even under the conditions of interocular suppression for all surround stimuli. The magnitude of chromatic induction differed with the surround conditions, and this difference was preserved regardless of the viewing conditions. The chromatic induction effect was reduced by CFS, in proportion to the magnitude of chromatic induction under natural (i.e., no-CFS) viewing conditions. According to an analysis with linear model fitting, we revealed the presence of at least two kinds of subprocesses for chromatic induction that reside at higher and lower levels than the site of interocular suppression. One mechanism yields different degrees of chromatic induction based on the complexity of the surround, which is unaffected by interocular suppression, while the other mechanism changes its output with interocular suppression acting as a gain control. Our results imply that the total chromatic induction effect is achieved via a linear summation of outputs from mechanisms that reside at different levels of visual processing.

scholarly journals Quantifying Nasotemporal Asymmetry of Interocular Suppression in Alternating Strabismus After Correction

2020 ◽  
Vol 61 (8) ◽  
pp. 6
Author(s):  
Qingshu Ge ◽  
Zidong Chen ◽  
Zitian Liu ◽  
Jing Samantha Pan ◽  
Yun Wen ◽  
...  
Keyword(s):  
Interocular Suppression

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.

THE REPEATABILITY OF A NEW CLINICAL TEST OF INTEROCULAR SUPPRESSION OF UNIOCULAR BLUR.

1995 ◽  
Vol 72 (SUPPLEMENT) ◽  
pp. 86
Author(s):  
Trefford L Simpson ◽  
Doris B Richter ◽  
Kathryn Dumbleton ◽  
Desmond Fonn
Keyword(s):  
Clinical Test ◽  
Interocular Suppression

Explanation for Neon Color Effect in Achromatic Line Segments on Chromatic Inducers Based on the Multiple Interpretation Hypothesis

2005 ◽  
Vol 101 (1) ◽  
pp. 267-282
Author(s):  
Seiyu Sohmiya
Keyword(s):  
Visual System ◽  
Line Segment ◽  
Color Contrast ◽  
Achromatic Color ◽  
Line Segments ◽  
Color Effect ◽  
Complementary Color ◽  
Multiple Interpretation ◽  
Color Induction ◽  
Simultaneous Color Contrast

In van Tuijl's neon configurations, an achromatic line segment on a blue inducer produces yellowish illusory color in the illusory area. This illusion has been explained based on the idea of the complementary color induced by the blue inducer. However, it is proposed here that this illusion can be also explained by introducing the assumption that the visual system unconsciously interprets an achromatic color as information that is constituted by transparent and nontransparent colors. If this explanation is correct, not only this illusion, but also the simultaneous color contrast illusion can be explained without using the idea of the complementary color induction.

scholarly journals Color Can Shorten Breakthrough Times in Continuous Flash Suppression through Increased Salience and Task Relevance

Vision ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Christian Valuch
Keyword(s):  
Visual Search ◽  
Response Times ◽  
Top Down ◽  
Interocular Suppression ◽  
Continuous Flash Suppression ◽  
Task Relevance ◽  
Mediated Effects ◽  
Dominant Eye ◽  
Human Participants ◽  
And Task

Color can enhance the perception of relevant stimuli by increasing their salience and guiding visual search towards stimuli that match a task-relevant color. Using Continuous Flash Suppression (CFS), the current study investigated whether color facilitates the discrimination of targets that are difficult to perceive due to interocular suppression. Gabor patterns of two or four cycles per degree (cpd) were shown as targets to the non-dominant eye of human participants. CFS masks were presented at a rate of 10 Hz to the dominant eye, and participants had the task to report the target’s orientation as soon as they could discriminate it. The 2-cpd targets were robustly suppressed and resulted in much longer response times compared to 4-cpd targets. Moreover, only for 2-cpd targets, two color-related effects were evident. First, in trials where targets and CFS masks had different colors, targets were reported faster than in trials where targets and CFS masks had the same color. Second, targets with a known color, either cyan or yellow, were reported earlier than targets whose color was randomly cyan or yellow. The results suggest that the targets’ entry to consciousness may have been speeded by color-mediated effects relating to increased (bottom-up) salience and (top-down) task relevance.

scholarly journals Biological motion processing under interocular suppression

2015 ◽  
Vol 15 (12) ◽  
pp. 498
Author(s):  
Akila Kadambi ◽  
Angela Pham ◽  
Luke Miller ◽  
Ayse Saygin
Keyword(s):  
Biological Motion ◽  
Motion Processing ◽  
Interocular Suppression

scholarly journals Intranasal Oxytocin Increases Perceptual Salience of Faces in the Absence of Awareness

2020 ◽  
Vol 17 (4) ◽  
pp. 292-298 ◽  
Author(s):  
Shao-Wei Xue ◽  
Hua-Bo Wu ◽  
Lanhua Zhang ◽  
De-Xuan Zhang
Keyword(s):  
Social Information Processing ◽  
Pupil Diameter ◽  
Controlled Trial ◽  
Social Stimuli ◽  
Interocular Suppression ◽  
Double Blind ◽  
Double Blind Placebo ◽  
Perceptual Salience ◽  
Neural Processes ◽  
Neutral Expression

Objective The neuropeptide oxytocin has been found to improve human social cognition and promote prosocial behavior. However, it is still unclear about the mechanisms underlying these effects of oxytocin on neural processes, such as visual perception and awareness. Especially, it is still unclear whether oxytocin influences perceptual salience of social stimuli in the absence of awareness.Methods In a randomized double-blind, placebo-controlled trial we applied an interocular suppression paradigm and eye tracking methods to investigate the influence of intranasally administered oxytocin on perceptual salience of social stimuli. Suppression times and pupillometric data were measured during subjects being presented with gradually introduced pictures of social stimuli (neutral expression faces) or nonsocial stimuli (grayscale watch pictures) that were suppressed and invisible in 10 men who were administered 24 IU oxytocin and 10 men who were administered a placebo.Results The results demonstrated that the oxytocin group perceived social stimuli more quickly accompanied by subsequent larger increasing pupil diameter than nonsocial stimuli, indicating an increased unconscious salience of social stimuli.Conclusion These findings provided new insights into oxytocin’s modulatory role to social information processing, suggesting that oxytocin might enhance attentional bias to social stimuli even after removal of awareness.

Sign in / Sign up

Export Citation Format

Share Document