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Journal articles on the topic 'Colour adaptation'

Author: Grafiati

Published: 20 February 2023

Last updated: 31 July 2025

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1

Budak, Vladimir P., and Ruzana А. Delyan. "Changing MacAdam Ellipses with Adaptation." Light & Engineering, no. 04-2023 (August 2023): 14–18. http://dx.doi.org/10.33383/2022-102.

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Modern light sources (light emitting diodes, organic light emitting diodes) have considerable flexibility in creating a wide range of colours and brightness of lighting devices and monitors in which they are used. Evaluation of the homogeneity of the chromaticity of radiation is carried out using the colour thresholds obtained in the McAdam experiment and named after their shape McAdam ellipses. This experiment was carried out under the same observation conditions. Their application in practice is limited and requires research in a wide range of observation conditions. To date, in colorimetry,

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2

Stanikūnas, Rytis, Henrikas Vaitkevičius, Algimantas Švegžda, et al. "DU OBJEKTŲ SPALVOS SUVOKIMO PROCESAI." Psichologija 30 (January 1, 2004): 7–16. http://dx.doi.org/10.15388/psichol.2004..4350.

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Objektų spalvų suvokimas aiškinamas dviem procesais. Atlikti bandomieji tyrimai, kuriais nustatyta kontrasto ir fono adaptacijos įtaka spalvų suvokimui. Bandyme dalyvavo keturi tiriamieji. Jų spalvinis regėjimas buvo normalus. 40 spalvotų stimulų ir 6 apšvietimai buvo generuojami vaizduoklio ekrane. Tiriamiesiems buvo rodomas spalvotas objektas pilkame fone esant įvairiems apšvietimams. Tiriamasis turėjo nustatyti, kokią objekto spalvą mato esant įvairiems adaptacijos laikams. Paaiškėjo, kad galima išskirti dvi subjektyvaus spalvos įvertinimo sistemas: viena sistema įvertina objekto ir suvokia

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3

Oicherman, Boris, M. Ronnier Luo, Brian Rigg, and Alan R. Robertson. "Adaptation and colour matching of display and surface colours." Color Research & Application 34, no. 3 (2009): 182–93. http://dx.doi.org/10.1002/col.20492.

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Webster, Michael A., and Donald I. A. MacLeod. "Visual adaptation and face perception." Philosophical Transactions of the Royal Society B: Biological Sciences 366, no. 1571 (2011): 1702–25. http://dx.doi.org/10.1098/rstb.2010.0360.

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The appearance of faces can be strongly affected by the characteristics of faces viewed previously. These perceptual after-effects reflect processes of sensory adaptation that are found throughout the visual system, but which have been considered only relatively recently in the context of higher level perceptual judgements. In this review, we explore the consequences of adaptation for human face perception, and the implications of adaptation for understanding the neural-coding schemes underlying the visual representation of faces. The properties of face after-effects suggest that they, in part

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Hodge, J. R., F. Santini, and P. C. Wainwright. "Colour dimorphism in labrid fishes as an adaptation to life on coral reefs." Proceedings of the Royal Society B: Biological Sciences 287, no. 1923 (2020): 20200167. http://dx.doi.org/10.1098/rspb.2020.0167.

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Conspicuous coloration displayed by animals that express sexual colour dimorphism is generally explained as an adaptation to sexual selection, yet the interactions and relative effects of selective forces influencing colour dimorphism are largely unknown. Qualitatively, colour dimorphism appears more pronounced in marine fishes that live on coral reefs where traits associated with strong sexual selection are purportedly more common. Using phylogenetic comparative analysis, we show that wrasses and parrotfishes exclusive to coral reefs are the most colour dimorphic, but surprisingly, the effect

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6

Zaidi, Q., B. Spehar, and J. S. DeBonnet. "Adaptation to Variegated Scenes and Colour Constancy." Perception 25, no. 1_suppl (1996): 184. http://dx.doi.org/10.1068/v96l0613.

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For a visual system to possess colour constancy across varying illumination, chromatic signals from a scene must remain constant at some neural stage. We found that photoreceptor and opponent-colour signals from a large sample of natural and man-made objects under one kind of natural daylight were almost perfectly correlated with the signals from those objects under every other spectrally different phase of daylight. Therefore, in scenes consisting of many objects, the effect of illumination changes on specific colour mechanisms can be simulated by shifting all chromaticities by an additive or

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7

Li, Xinrui. "Human skin colour evolution and adaptation relates to folate and vitamin D." Theoretical and Natural Science 63, no. 1 (2024): 91–94. http://dx.doi.org/10.54254/2753-8818/63/20241737.

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Human skin colour has evolved independently in different regions as an adaptation to varing geographic environments, closely related to ultraviolet radiation (UVR) exposure. For example, white skin color tends to become lighter at higher altitudes, UVR level typically decrease with altitude. Since human skin is directly exposed to sunlight, UVR significantly impacts its characteristics. This paper primarily examines the effects of UVR on skin and its relationship to the skin colour evolution through the lens of natural selection. Additionally, we explore the roles of folate and vitamin D in sk

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8

Bramwell, David I., and Anya C. Hurlbert. "Measurements of Colour Constancy by Using a Forced-Choice Matching Technique." Perception 25, no. 2 (1996): 229–41. http://dx.doi.org/10.1068/p250229.

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Colour constancy is typically measured with techniques involving asymmetric matching by adjustment, in which the observer views two scenes under different illuminants and adjusts the colour of a reference patch in one to match a test patch in the other. This technique involves an unnatural task, requiring the observer to predict and adjust colour appearance under an illumination shift. Natural colour constancy is more a simple matter of determining whether a colour is the same as or different from that seen under different illumination conditions. There are also technical disadvantages to the

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9

Zhai, Qiyan, M. Ronnier Luo, Peter Hanselaer, and KevinA G. Smet. "Modelling Incomplete Chromatic Adaptation and Colour Contrast Using Memory Colour." Color and Imaging Conference 2016, no. 1 (2016): 82–87. http://dx.doi.org/10.2352/issn.2169-2629.2017.32.82.

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10

Delorme, André. "Dichoptically Viewed Colour Aftereffects Produced by Monocular Adaptation." Perception 23, no. 8 (1994): 957–64. http://dx.doi.org/10.1068/p230957.

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Colour aftereffects were observed in dichoptically viewed achromatic striped patterns after a 25 s period of monocular adaptation to an homogeneous coloured field of red, green, or blue. Three test conditions of dichoptic viewing were used. In condition 1, black line patterns were viewed dichoptically on fused white backgrounds. Stimuli used in condition 2 were similar except that they were white line patterns on black backgrounds. Last, condition 3 was realised with the same stimulus patterns utilised in condition 1, except that the mode of dichoptic viewing produced a juxtaposition rather th

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11

Jordan, G., and J. D. Mollon. "Adaptation of colour vision to sunlight." Nature 386, no. 6621 (1997): 135–36. http://dx.doi.org/10.1038/386135b0.

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12

Webster, Michael A. "Human colour perception and its adaptation." Network: Computation in Neural Systems 7, no. 4 (1996): 587–634. http://dx.doi.org/10.1088/0954-898x_7_4_002.

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13

Webster, Michael A., and J. D. Mollon. "Colour constancy influenced by contrast adaptation." Nature 373, no. 6516 (1995): 694–98. http://dx.doi.org/10.1038/373694a0.

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14

Madhu, K. R., R. G. R. Prasath, and K. Ramesh. "Colour Adaptation in Three Fringe Photoelasticity." Experimental Mechanics 47, no. 2 (2007): 271–76. http://dx.doi.org/10.1007/s11340-006-9012-x.

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15

Lind, Olle. "Colour vision and background adaptation in a passerine bird, the zebra finch ( Taeniopygia guttata )." Royal Society Open Science 3, no. 9 (2016): 160383. http://dx.doi.org/10.1098/rsos.160383.

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Today, there is good knowledge of the physiological basis of bird colour vision and how mathematical models can be used to predict visual thresholds. However, we still know only little about how colour vision changes between different viewing conditions. This limits the understanding of how colour signalling is configured in habitats where the light of the illumination and the background may shift dramatically. I examined how colour discrimination in zebra finch ( Taeniopygia guttata ) is affected by adaptation to different backgrounds. I trained finches in a two-alternative choice task, to ch

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16

Daugirdienė, Aušra, and Henrikas Vaitkevičius. "STIMULO ERDVINIŲ SAVYBIŲ IR STEBĖJIMO TRUKMĖS ĮTAKA SPALVOS PASTOVUMUI." Psichologija 24 (January 1, 2001): 48–57. http://dx.doi.org/10.15388/psichol.2001..4411.

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Darbe tiriama, kaip tarpusavyje susiję spalvos pastovumas ir spalvinė adaptacija, kokią įtaką spalvų suvokimui, esant įvairiems apšvietimams, turi stimulų stebėjimo laikas ir stimulų erdvinės savybės. Spalvų konstantiškumo eksperimentuose spalvinės adaptacijos procesus tyrėme asimetriniu stimulų lyginimo metodu. Eksperimentuose naudojome 3 skirtingus plataus spektro apšvietimo šaltinius. Dviejose skirtingose bandymų serijose testiniai stimulai buvo neutralūs Manselio pavyzdėliai N7, generuojami monitoriaus ekrane (naudota BARCO sistema). Eksperimentuose dalyvavo septyni tiriamieji.Adaptacijos

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17

Newman, Ethan, Bruce Anderson, and Steven D. Johnson. "Flower colour adaptation in a mimetic orchid." Proceedings of the Royal Society B: Biological Sciences 279, no. 1737 (2012): 2309–13. http://dx.doi.org/10.1098/rspb.2011.2375.

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Although the tremendous variability in floral colour among angiosperms is often attributed to divergent selection by pollinators, it is usually difficult to preclude the possibility that floral colour shifts were driven by non-pollinator processes. Here, we examine the adaptive significance of flower colour in Disa ferruginea , a non-rewarding orchid that is thought to attract its butterfly pollinator by mimicking the flowers of sympatric nectar-producing species. Disa ferruginea has red flowers in the western part of its range and orange flowers in the eastern part—a colour shift that we hypo

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18

Chavez, Johanna, Almut Kelber, Misha Vorobyev, and Olle Lind. "Unexpectedly low UV-sensitivity in a bird, the budgerigar." Biology Letters 10, no. 11 (2014): 20140670. http://dx.doi.org/10.1098/rsbl.2014.0670.

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Photoreceptor adaptation ensures appropriate visual responses during changing light conditions and contributes to colour constancy. We used behavioural tests to compare UV-sensitivity of budgerigars after adaptation to UV-rich and UV-poor backgrounds. In the latter case, we found lower UV-sensitivity than expected, which could be the result of photon-shot noise corrupting cone signal robustness or nonlinear background adaptation. We suggest that nonlinear adaptation may be necessary for allowing cones to discriminate UV-rich signals, such as bird plumage colours, against UV-poor natural backgr

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19

MANCUSO, KATHERINE, MAUREEN NEITZ, and JAY NEITZ. "An adaptation of the Cambridge Colour Test for use with animals." Visual Neuroscience 23, no. 3-4 (2006): 695–701. http://dx.doi.org/10.1017/s0952523806233364.

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Recently, molecular biological techniques have presented new opportunities for addressing questions concerning the neural mechanisms involved in color coding, thereby rousing renewed interest in animal color vision testing. We have modified a computer-based assessment tool, the Cambridge Colour Test, to make it suitable for use with animals. Here, the validity and reliability of the testing method were evaluated using squirrel monkeys. Because the chromatic stimuli and the achromatic backgrounds of the test consist of dots that vary in lightness, the stimulus parameters can be adjusted so that

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20

Cornelissen, F. W., and E. Brenner. "Ignoring Sparse Chromatic Context." Perception 25, no. 1_suppl (1996): 31. http://dx.doi.org/10.1068/v96l0411.

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The apparent colour of a target depends to some extent on the colour of the background. Jennes and Shevell have recently shown that a red background scattered with white or green dots has a different influence on the apparent colour of a target than a uniform background with the same space-averaged chromaticity and luminance (1995 Vision Research35 797 – 805). This could have important implications for our understanding of colour vision. However, it appears to be a very fragile effect. We were only successful in reproducing it when we used the same long dark-adaptation and pre-adaptation times

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21

Hernández, M. Carmen, Sandra González-Campos, and Isabel Barja. "Colour Preferences in Relation to Diet in Chimpanzees<b><i></i></b>(<b><i>Pan troglodytes</i></b>), Gorillas (<b><i>Gorilla gorilla</i></b>) and Mandrills (<b><i>Mandrillus sphinx</i></b>)." Folia Primatologica 92, no. 5-6 (2021): 306–14. http://dx.doi.org/10.1159/000520487.

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Although trichromatic colour vision has been extensively studied as it grants significant advantages for Old World primates, it is unknown which selective pressures were behind the trait’s evolution. The leading hypothesis would be that colour vision arose as a foraging adaptation because it allowed individuals to spot food more efficiently. To test this, we exposed 3 chimpanzees (<i>Pan troglodytes</i>), 5 gorillas (<i>Gorilla gorilla</i>) and 3 mandrills (<i>Mandrillus sphinx</i>) to colour cardboard plates to assess whether colours related to diet were th

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22

Nieves, Juan L., Eva Valero, Javier Hernández-Andrés, and Javier Romero. "Colour Appearance of Surfaces as Affected by Different Time-Varying Colour-Adaptation Sequences." Optical Review 10, no. 4 (2003): 221–30. http://dx.doi.org/10.1007/s10043-003-0221-6.

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23

Burmester, Alex, and Jack Broerse. "Adaptation to Combinations of form, Colour, and Movement." Perception 39, no. 5 (2010): 620–26. http://dx.doi.org/10.1068/p6529.

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24

Webster, Michael A., and J. D. Mollon. "Changes in colour appearance following post-receptoral adaptation." Nature 349, no. 6306 (1991): 235–38. http://dx.doi.org/10.1038/349235a0.

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25

Stoddard, Mary Caswell, and Mark E. Hauber. "Colour, vision and coevolution in avian brood parasitism." Philosophical Transactions of the Royal Society B: Biological Sciences 372, no. 1724 (2017): 20160339. http://dx.doi.org/10.1098/rstb.2016.0339.

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The coevolutionary interactions between avian brood parasites and their hosts provide a powerful system for investigating the diversity of animal coloration. Specifically, reciprocal selection pressure applied by hosts and brood parasites can give rise to novel forms and functions of animal coloration, which largely differ from those that arise when selection is imposed by predators or mates. In the study of animal colours, avian brood parasite–host dynamics therefore invite special consideration. Rapid advances across disciplines have paved the way for an integrative study of colour and visio

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26

Klomp, D. A., D. Stuart-Fox, I. Das, and T. J. Ord. "Marked colour divergence in the gliding membranes of a tropical lizard mirrors population differences in the colour of falling leaves." Biology Letters 10, no. 12 (2014): 20140776. http://dx.doi.org/10.1098/rsbl.2014.0776.

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Populations of the Bornean gliding lizard, Draco cornutus , differ markedly in the colour of their gliding membranes. They also differ in local vegetation type (mangrove forest versus lowland rainforest) and consequently, the colour of falling leaves (red and brown/black in mangrove versus green, brown and black in rainforest). We show that the gliding membranes of these lizards closely match the colours of freshly fallen leaves in the local habitat as they appear to the visual system of birds (their probable predators). Furthermore, gliding membranes more closely resembled colours of local fa

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27

Yoshikawa, Akihiro, Kazuho Ikeo, Junichi Imoto, et al. "Molecular phylogeny of Clibanarius Dana, 1852 from the Indo-West Pacific: evolution of pereopod colour pattern and habitat adaptation." Crustaceana 92, no. 7 (2019): 799–839. http://dx.doi.org/10.1163/15685403-00003910.

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Abstract Species of hermit crabs in the genus Clibanarius Dana, 1852 have adapted to various environments in the intertidal areas, including hard substrates and soft sediments. These species often bear a close morphological resemblance to each other, therefore, the colouration on the pereopods can be one of the reliable characteristics to distinguish the species. However, the evolutionary relationships among species with different colour patterns and relationships between colour patterns and habitat adaptation have not previously been investigated. Therefore, we reconstructed the phylogenetic

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28

Machado, Natalia Alves, Marcelo Dumas Hahn, Frederico Alan de Oliveira Cruz, and Paulo Simeão Carvalho. "Identifying colours in the absorption spectrum with an app." Physics Education 59, no. 4 (2024): 045038. http://dx.doi.org/10.1088/1361-6552/ad4f3f.

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Abstract This study addresses the challenges faced by students with colour blindness during the exploration of light spectra, emphasizing the crucial adaptation of educational materials for effective learning. The proposed solution, characterized by its low-cost and straightforward implementation, involves the use of smartphone apps, notably the ‘ColorADD,’ to assist students who cannot perceive colours in understanding spectral phenomena. This topic is integrated into the curricula of both high school and undergraduate physics courses in Portugal and Brazil. This approach represents a tangibl

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29

Pittman, L. Monique. "Colour-Conscious Casting and Multicultural Britain in the BBC Henry V (2012): Historicizing Adaptation in an Age of Digital Placelessness." Adaptation 10, no. 2 (2017): 176–91. http://dx.doi.org/10.1093/adaptation/apx013.

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30

Goddard, Erin, Robert Hess, and Kathy Mullen. "Colour and achromatic contrast adaptation: different adaptation effects at detection threshold and suprathreshold contrasts." Journal of Vision 19, no. 8 (2019): 9. http://dx.doi.org/10.1167/19.8.9.

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31

Wade, N. M., M. Anderson, M. J. Sellars, R. K. Tume, N. P. Preston, and B. D. Glencross. "Mechanisms of colour adaptation in the prawn Penaeus monodon." Journal of Experimental Biology 215, no. 2 (2011): 343–50. http://dx.doi.org/10.1242/jeb.064592.

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32

Murray, I. J., A. Daugirdiene, H. Vaitkevicius, J. J. Kulikowski, and R. Stanikunas. "Almost complete colour constancy achieved with full-field adaptation." Vision Research 46, no. 19 (2006): 3067–78. http://dx.doi.org/10.1016/j.visres.2006.03.011.

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33

Hita, E., J. Romero, A. Cervantes, and L. Jimenez del Barco. "The influence of chromatic adaptation upon successive colour discrimination." Journal of Optics 20, no. 2 (1989): 87–94. http://dx.doi.org/10.1088/0150-536x/20/2/005.

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34

Luo, M. R., and R. W. G. Hunt. "A chromatic adaptation transform and a colour inconstancy index." Color Research & Application 23, no. 3 (1998): 154–58. http://dx.doi.org/10.1002/(sici)1520-6378(199806)23:3<154::aid-col7>3.0.co;2-p.

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35

Zimova, Marketa, L. Scott Mills, Paul M. Lukacs, and Michael S. Mitchell. "Snowshoe hares display limited phenotypic plasticity to mismatch in seasonal camouflage." Proceedings of the Royal Society B: Biological Sciences 281, no. 1782 (2014): 20140029. http://dx.doi.org/10.1098/rspb.2014.0029.

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As duration of snow cover decreases owing to climate change, species undergoing seasonal colour moults can become colour mismatched with their background. The immediate adaptive solution to this mismatch is phenotypic plasticity, either in phenology of seasonal colour moults or in behaviours that reduce mismatch or its consequences. We observed nearly 200 snowshoe hares across a wide range of snow conditions and two study sites in Montana, USA, and found minimal plasticity in response to mismatch between coat colour and background. We found that moult phenology varied between study sites, like

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36

Kuriki, I., and K. Uchikawa. "Effect of Ambient Illuminant on Surface Colour Constancy." Perception 26, no. 1_suppl (1997): 221. http://dx.doi.org/10.1068/v970066.

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Generally, we are completely enclosed in a real environment, which may act as an entire view-field or adapting field. But in most studies on colour constancy experiments have been made with spatially restricted stimuli. We built a room with gray (N5) walls inside to measure the effect of ambient illuminant on colour constancy. The room illuminant could change its colour from white (D65) to either blue, orange, green, or purple. The observer sat in this main room and adapted to the illuminant for 5 min before the start of the experiment. The observer was shown a smaller room, which had the same

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37

Onstein, Renske E., Daphne N. Vink, Jorin Veen, et al. "Palm fruit colours are linked to the broad-scale distribution and diversification of primate colour vision systems." Proceedings of the Royal Society B: Biological Sciences 287, no. 1921 (2020): 20192731. http://dx.doi.org/10.1098/rspb.2019.2731.

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A long-standing hypothesis in ecology and evolution is that trichromatic colour vision (the ability to distinguish red from green) in frugivorous primates has evolved as an adaptation to detect conspicuous (reddish) fruits. This could provide a competitive advantage over dichromatic frugivores which cannot distinguish reddish colours from a background of green foliage. Here, we test whether the origin, distribution and diversity of trichromatic primates is positively associated with the availability of conspicuous palm fruits, i.e. keystone fruit resources for tropical frugivores. We combine g

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38

Wang, Y., and M. Wei. "Preference among light sources with different Duv but similar colour rendition: A pilot study." Lighting Research & Technology 50, no. 7 (2017): 1013–23. http://dx.doi.org/10.1177/1477153517712552.

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Recent studies have suggested that light sources with chromaticities slightly below the blackbody locus are preferred by human observers. The preferred light settings identified in these studies, however, had high values of colour fidelity and colour gamut. It has been speculated that the preference was caused by good colour rendition, rather than chromaticity. This article reports a pilot study in which the spectral power distributions of the light settings were carefully designed using a genetic algorithm. Twenty-three observers evaluated pairs of light settings at 3000 K and 6500 K with dif

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He, J., Y. Lin, T. Yano, H. Noguchi, S. Yamaguchi, and Y. Matsubayashi. "Preference for appearance of Chinese complexion under different lighting." Lighting Research & Technology 49, no. 2 (2016): 228–42. http://dx.doi.org/10.1177/1477153515615171.

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The method for evaluating the colour rendering of light-emitting diode sources is controversial, especially for the appearance of human complexions. A psychophysical experiment was conducted using Chinese models to examine the effect of various illumination settings, characterized by two levels of preferred skin colour index and four levels of correlated colour temperature, on preference for the appearance of the Chinese complexion. Results showed that the preferred skin colour index was an effective indicator. Taking incomplete colour adaptation into account, the preferred skin colour index w

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40

Rinner, Oliver, and Karl R. Gegenfurtner. "Cone Contributions to Colour Constancy." Perception 31, no. 6 (2002): 733–46. http://dx.doi.org/10.1068/p3352.

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Colour constancy refers to the stable perception of object colour under changing illumination conditions. This problem has been reformulated as relational colour constancy, or the ability of the observer to discriminate between material changes and changes in illumination. It has been suggested that local cone excitation ratios play a prominent role in achieving such constancy. Here we show that perceptual colour constancy measured by achromatic adjustments is to a large part complete after 25 ms. This speaks against a prominent role for receptor adaptation, which takes significantly longer. W

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41

Garai, Lorinc, and Andras Horvath. "Measuring AgeDependence Of Colour Afterimage Perception." Light & Engineering, no. 02-2022 (April 2022): 70–81. http://dx.doi.org/10.33383/2021-061.

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Afterimages are common and frequent perceptual phenomena of everyday life. A typical appearance is the negative УghostФ image of a bright light source when we turn away from it. In the case of significant colour contrast, the afterimage can be coloured. The perceived false imageТs strength decreases gradually and completely disappears in a (10-100) s timescale. The underlying processes have multiple components: a quick adaptation on the retinal level, and a slower adaptation on the neural level. Several studies discuss these mechanisms, but there are still important questions to be answered. I

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Parraga, C. Alejandro, and Arash Akbarinia. "Colour constancy as a product of dynamic centre-surround adaptation." Journal of Vision 16, no. 12 (2016): 214. http://dx.doi.org/10.1167/16.12.214.

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Neethi Simon, B., and K. Ramesh. "COLOUR ADAPTATION IN THREE FRINGE PHOTOELASTICITY USING A SINGLE IMAGE." Experimental Techniques 35, no. 5 (2010): 59–65. http://dx.doi.org/10.1111/j.1747-1567.2010.00646.x.

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44

Bourdy, C., F. Vienot, A. Monot, and A. Chiron. "Spatial contrast detection for colour patterns under selective chromatic adaptation." Displays 6, no. 1 (1985): 43–51. http://dx.doi.org/10.1016/0141-9382(85)90006-x.

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45

Mäntyjärvi, Maija. "Colour vision and dark adaptation in diabetic patients after photocoagulation." Acta Ophthalmologica 67, no. 2 (2009): 113–18. http://dx.doi.org/10.1111/j.1755-3768.1989.tb00738.x.

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46

Camacho, Carlos, Alberto Sanabria-Fernández, Adrián Baños-Villalba, and Pim Edelaar. "Experimental evidence that matching habitat choice drives local adaptation in a wild population." Proceedings of the Royal Society B: Biological Sciences 287, no. 1927 (2020): 20200721. http://dx.doi.org/10.1098/rspb.2020.0721.

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Matching habitat choice is a unique, flexible form of habitat choice based on self-assessment of local performance. This mechanism is thought to play an important role in adaptation and population persistence in variable environments. Nevertheless, the operation of matching habitat choice in natural populations remains to be unequivocally demonstrated. We investigated the association between body colour and substrate use by ground-perching grasshoppers ( Sphingonotus azurescens ) in an urban mosaic of dark and pale pavements, and then performed a colour manipulation experiment to test for matc

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Nayubi, Bhatia, and Gurpyari Bhatnagar Dr. "Bridging Romance and Representation Through Colour Blind Casting in the Bridgerton Series." Context 12, no. 3 (2025): 67–76. https://doi.org/10.5281/zenodo.15545147.

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The research paper examines <em>Bridgerton</em> as a transformative case study in adaptation and inclusive casting. The paper argues that <em>Bridgerton's</em> casting reshapes traditional narratives and challenges dominant representations in historical romance by analysing how the Netflix adaptation departs from Julia Quinn's original novel series. While Quinn's novels reflect the racial homogeneity typical of Regency-era fiction, the series reimagines the aristocratic world by integrating Black and Brown characters into the upper echelons of society. Bridgerton disrupts the Eurocentric frame

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Daugirdienė, Aušra, Rytis Stanikūnas, Henrikas Vaitkevičius, Ian J. Murray, and Janus J. Kulikowski. "SPALVŲ SUVOKIMO KONSTANTIŠKUMO VEIKSNIAI: KONTRASTAS IR ADAPTACIJA PRIE FONO SPALVOS." Psichologija 35 (January 1, 2007): 96–110. http://dx.doi.org/10.15388/psichol.2007.0.2849.

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Straipsnyje keliame hipotezę, kad spalvos suvokimo konstantiškumas, kaip procesas, turi dvi sudedamąsias dalis: lokalų ir globalų procesą. Lokalus procesas – tai skirtumas tarp fono ir spalvoto objekto (mūsų tyrimuose – Manselio pavyzdėlio). Šis procesas nuo adaptacijos nepriklauso ir vyksta tik nedideliame regėjimo lauke. Kitas procesas vyksta bėgant laikui, kai kinta suvokiama spalva. Tai fono spalva. Stebėtojas ją įvertina kaip viso regėjimo lauko spalvinį parametrą, todėl pastarasis procesas – globalus. Spalvų suvokimo konstantiškumo eksperimente abu procesus tyrėme asimetriniu stimulų lyg

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Delgadin, Tomás Horacio, Diana Carolina Castañeda-Cortés, Clara Sacks, Andrés Breccia, Juan Ignacio Fernandino, and Paula Gabriela Vissio. "Morphological colour adaptation during development in fish: involvement of growth hormone receptor 1." Journal of Experimental Biology 223, no. 24 (2020): jeb230375. http://dx.doi.org/10.1242/jeb.230375.

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ABSTRACTMorphological background adaptation is both an endocrine and a nervous response, involving changes in the amount of chromatophores and pigment concentration. However, whether this adaptation takes place at early developmental stages is largely unknown. Somatolactin (Sl) is a pituitary hormone present in fish, which has been associated to skin pigmentation. Moreover, growth hormone receptor type 1 (Ghr1) has been suggested to be the Sl receptor and was associated with background adaptation in adults. In this context, the aim of this work was to evaluate the ontogeny of morphological ada

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Willmott, Keith R., Julia C. Robinson Willmott, Marianne Elias, and Chris D. Jiggins. "Maintaining mimicry diversity: optimal warning colour patterns differ among microhabitats in Amazonian clearwing butterflies." Proceedings of the Royal Society B: Biological Sciences 284, no. 1855 (2017): 20170744. http://dx.doi.org/10.1098/rspb.2017.0744.

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Mimicry is one of the best-studied examples of adaptation, and recent studies have provided new insights into the role of mimicry in speciation and diversification. Classical Müllerian mimicry theory predicts convergence in warning signal among protected species, yet tropical butterflies are exuberantly diverse in warning colour patterns, even within communities. We tested the hypothesis that microhabitat partitioning in aposematic butterflies and insectivorous birds can lead to selection for different colour patterns in different microhabitats and thus help maintain mimicry diversity. We meas

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