Color Discrimination Conditioning of a Wasp, Polybia occidentalis (Hymenoptera: Vespidae)

Biotropica ◽  
1996 ◽  
Vol 28 (2) ◽  
pp. 243 ◽  
Author(s):  
Sharoni Shafir
Keyword(s):  
Color Discrimination ◽  
Discrimination Conditioning ◽  
Polybia Occidentalis

scholarly journals Color Discrimination Conditioning in Two Octopus Octopus aegina and O. vulgaris.

2001 ◽  
Vol 67 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Gunzo Kawamura ◽  
Kazuo Nobutoki ◽  
Kazuhiko Anraku ◽  
Yoshito Tanaka ◽  
Masaru Okamoto
Keyword(s):  
Color Discrimination ◽  
Discrimination Conditioning

Hearing words changes color perception: Facilitation of color discrimination by verbal and visual cues

2017 ◽  
Author(s):  
Lewis Forder ◽  
Gary Lupyan
Keyword(s):  
Visual Cues ◽  
Color Word ◽  
Color Perception ◽  
Color Discrimination ◽  
Target Color ◽  
Discrimination Accuracy ◽  
Verbal Cues ◽  
The Moment

As part of learning some languages, people learn to name colors using categorical labels such as “red”, “yellow”, and “green”. Such labeling clearly facilitates communicating about colors, but does it also impact color perception? We demonstrate that simply hearing color words enhances categorical color perception, improving people’s accuracy in discriminating between simultaneously presented colors in an untimed task. Immediately after hearing a color word participants were better able to distinguish between colors from the named category and colors from nearby categories. Discrimination was also enhanced between typical and atypical category members. Verbal cues slightly decreased discrimination accuracy between two typical shades of the named color. In contrast to verbal cues, a preview of the target color, an arguably more informative cue, failed to yield any changes to discrimination accuracy. The finding that color words strongly affect color discrimination accuracy suggests that categorical color perception may be due to color representations being augmented in-the-moment by language.

scholarly journals C. elegans discriminates colors to guide foraging

Science ◽  
2021 ◽  
Vol 371 (6533) ◽  
pp. 1059-1063 ◽  
Author(s):  
D. Dipon Ghosh ◽  
Dongyeop Lee ◽  
Xin Jin ◽  
H. Robert Horvitz ◽  
Michael N. Nitabach
Keyword(s):  
Stress Response ◽  
Cellular Stress ◽  
Color Discrimination ◽  
Cellular Stress Response ◽  
Blue Pigment ◽  
Natural Environments ◽  
C Elegans ◽  
Evolutionarily Conserved ◽  
Foraging Decisions ◽  
Light Guides

Color detection is used by animals of diverse phyla to navigate colorful natural environments and is thought to require evolutionarily conserved opsin photoreceptor genes. We report that Caenorhabditis elegans roundworms can discriminate between colors despite the fact that they lack eyes and opsins. Specifically, we found that white light guides C. elegans foraging decisions away from a blue-pigment toxin secreted by harmful bacteria. These foraging decisions are guided by specific blue-to-amber ratios of light. The color specificity of color-dependent foraging varies notably among wild C. elegans strains, which indicates that color discrimination is ecologically important. We identified two evolutionarily conserved cellular stress response genes required for opsin-independent, color-dependent foraging by C. elegans, and we speculate that cellular stress response pathways can mediate spectral discrimination by photosensitive cells and organisms—even by those lacking opsins.

Color-Discrimination Performance of Pigeons: Effects of Reward

Science ◽  
1965 ◽  
Vol 149 (3688) ◽  
pp. 1113-1114 ◽  
Author(s):  
C. A. Boneau ◽  
M. K. Holland ◽  
W. M. Baker
Keyword(s):  
Discrimination Performance ◽  
Color Discrimination
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