Log in

Relevant bibliographies by topics / Dichromatic vision / Journal articles

To see the other types of publications on this topic, follow the link: Dichromatic vision.

Journal articles on the topic 'Dichromatic vision'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Dichromatic vision.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Caine, Nancy G., Daniel Osorio, and Nicholas I. Mundy. "A foraging advantage for dichromatic marmosets ( Callithrix geoffroyi ) at low light intensity." Biology Letters 6, no. 1 (2009): 36–38. http://dx.doi.org/10.1098/rsbl.2009.0591.

Full text

Abstract:

Most New World monkey species have both dichromatic and trichromatic individuals present in the same population. The selective forces acting to maintain the variation are hotly debated and are relevant to the evolution of the ‘routine’ trichromatic colour vision found in catarrhine primates. While trichromats have a foraging advantage for red food compared with dichromats, visual tasks which dichromats perform better have received less attention. Here we examine the effects of light intensity on foraging success among marmosets. We find that dichromats outperform trichomats when foraging in sh

APA, Harvard, Vancouver, ISO, and other styles

2

VAN ARSDEL, RICHARD E., and MICHAEL S. LOOP. "Color vision sensitivity in normally dichromatic species and humans." Visual Neuroscience 21, no. 5 (2004): 685–92. http://dx.doi.org/10.1017/s0952523804215036.

Full text

Abstract:

Spectral-sensitivity functions for large, long-duration increments presented on a photopic white background indicate that wavelength-opponent mechanisms mediate detection in both normal and dichromatic humans. Normal humans exhibit high color-vision sensitivity as they discriminate the color of spectral flashes at detection-threshold intensities. However, dichromatic humans require stimuli up to about 0.4 log units above detection intensity to see certain colors. This low color-vision sensitivity in human dichromats may be an abnormal condition involving a defect in postreceptoral color proces

APA, Harvard, Vancouver, ISO, and other styles

3

Widayati, Kanthi A., Atsuko Saito, Bambang Suryobroto, Akichika Mikami, and Kowa Koida. "Color Perception in Protanomalous Female Macaca fascicularis." i-Perception 10, no. 2 (2019): 204166951984613. http://dx.doi.org/10.1177/2041669519846136.

Full text

Abstract:

Protanomalous females with X chromosome-linked color vision deficiency exhibit mild abnormalities, whereas dichromats show a distinct deficiency in discriminating certain color pairs. Dichromats have an advantage in detecting a textured target when it is camouflaged by red-green colors, owing to their insensitivity to these colors. However, it is not certain whether protanomalous females possess a similar advantage in breaking camouflage. Here, we introduce an animal model of dichromatic macaque monkeys and protanomalous females. We examined whether protanomalous females have the same advantag

APA, Harvard, Vancouver, ISO, and other styles

4

Melin, Amanda D., Kenneth L. Chiou, Emily R. Walco, Mackenzie L. Bergstrom, Shoji Kawamura, and Linda M. Fedigan. "Trichromacy increases fruit intake rates of wild capuchins (Cebus capucinus imitator)." Proceedings of the National Academy of Sciences 114, no. 39 (2017): 10402–7. http://dx.doi.org/10.1073/pnas.1705957114.

Full text

Abstract:

Intraspecific color vision variation is prevalent among nearly all diurnal monkeys in the neotropics and is seemingly a textbook case of balancing selection acting to maintain genetic polymorphism. Clear foraging advantages to monkeys with trichromatic vision over those with dichromatic “red-green colorblind” vision have been observed in captive studies; however, evidence of trichromatic advantage during close-range foraging has been surprisingly scarce in field studies, perhaps as a result of small sample sizes and strong impacts of environmental or individual variation on foraging performanc

APA, Harvard, Vancouver, ISO, and other styles

5

POKORNY, JOEL, MARGARET LUTZE, DINGCAI CAO, and ANDREW J. ZELE. "The color of night: Surface color categorization by color defective observers under dim illuminations." Visual Neuroscience 25, no. 3 (2008): 475–80. http://dx.doi.org/10.1017/s0952523808080486.

Full text

Abstract:

People with normal trichromatic color vision experience variegated hue percepts under dim illuminations where only rod photoreceptors mediate vision. Here, hue perceptions were determined for persons with congenital color vision deficiencies over a wide range of light levels, including very low light levels where rods alone mediate vision. Deuteranomalous trichromats, deuteranopes and protanopes served as observers. The appearances of 24 paper color samples from the OSA Uniform Color Scales were gauged under successively dimmer illuminations from 10 to 0.0003 Lux (1.0 to −3.5 log Lux). Triads

APA, Harvard, Vancouver, ISO, and other styles

6

FRY, GLENN A. "Dichromatic Confusion Lines and Color Vision Models." Optometry and Vision Science 63, no. 12 (1986): 933–40. http://dx.doi.org/10.1097/00006324-198612000-00001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Thüs, Patricia, Klaus Lunau, and Petra Wester. "Colour vision in sengis (Macroscelidea, Afrotheria, Mammalia): choice experiments indicate dichromatism." Behaviour 157, no. 14-15 (2020): 1127–51. http://dx.doi.org/10.1163/1568539x-bja10039.

Full text

Abstract:

Abstract Little research has been conducted on the senses of sengis (elephant-shrews, Macroscelidea, Afrotheria, Mammalia); behavioural investigations about the animals’ vision are completely missing. Other Afrotheria (manatees, elephants, tenrecs, rock hyraxes) are dichromats, having two types of cone photoreceptors in the retina. We tested the hypotheses of dichromatic colour vision in sengis. With choice experiments, we examined the potential of two sengi species to discriminate between trained colours (blue, green, red) and different shades of grey, and to differentiate between trained UV-

APA, Harvard, Vancouver, ISO, and other styles

8

Polyansky, V. B., A. V. Vartanov, E. N. Sokolov, and D. V. Evtikhin. "540 Perceptual colour space of protanomal's dichromatic vision." International Journal of Psychophysiology 30, no. 1-2 (1998): 208. http://dx.doi.org/10.1016/s0167-8760(98)90539-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Polyansky, V. B., T. Yu Marchenko, E. N. Sokolov, and D. V. Evtikhin. "545 Perceptual colour space of rabbit's dichromatic vision." International Journal of Psychophysiology 30, no. 1-2 (1998): 209. http://dx.doi.org/10.1016/s0167-8760(98)90544-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Kawabata, Yasuhiro. "Spatial integration with chromatic stimuli in dichromatic vision." Color Research & Application 19, no. 5 (1994): 341–50. http://dx.doi.org/10.1002/col.5080190504.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Melin, Amanda D., Linda M. Fedigan, Hilary C. Young, and Shoji Kawamura. "Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys?" Current Zoology 56, no. 3 (2010): 300–312. http://dx.doi.org/10.1093/czoolo/56.3.300.

Full text

Abstract:

Abstract Invertebrates are the main source of protein for many small-to-medium sized monkeys. Prey vary in size, mobility, degree of protective covering, and use of the forest, i.e. canopy height, and whether they are exposed or embed themselves in substrates. Sex-differentiation in foraging patterns is well documented for some monkey species and recent studies find that color vision phenotype can also affect invertebrate foraging. Since vision phenotype is polymorphic and sex-linked in most New World monkeys - males have dichromatic vision and females have either dichromatic or trichromatic v

APA, Harvard, Vancouver, ISO, and other styles

12

LINHARES, JOÃO M. M., PAULO D. PINTO, and SÉRGIO M. C. NASCIMENTO. "The number of discernible colors perceived by dichromats in natural scenes and the effects of colored lenses." Visual Neuroscience 25, no. 3 (2008): 493–99. http://dx.doi.org/10.1017/s0952523808080620.

Full text

Abstract:

The number of discernible colors perceived by normal trichromats when viewing natural scenes can be estimated by analyzing idealized color volumes or hyperspectral data obtained from actual scenes. The purpose of the present work was to estimate the relative impairment in chromatic diversity experienced by dichromats when viewing natural scenes and to investigate the effects of colored lenses. The estimates were obtained computationally from the analysis of hyperspectral images of natural scenes and using a quantitative model of dichromats' vision. The color volume corresponding to each scene

APA, Harvard, Vancouver, ISO, and other styles

13

Neitz, Jay, Timothy Geist, and Gerald H. Jacobs. "Color vision in the dog." Visual Neuroscience 3, no. 2 (1989): 119–25. http://dx.doi.org/10.1017/s0952523800004430.

Full text

Abstract:

AbstractThe color vision of three domestic dogs was examined in a series of behavioral discrimination experiments. Measurements of increment-threshold spectral sensitivity functions and direct tests of color matching indicate that the dog retina contains two classes of cone photopigment. These two pigments are computed to have spectral peaks of about 429 nm and 555 nm. The results of the color vision tests are all consistent with the conclusion that dogs have dichromatic color vision.

APA, Harvard, Vancouver, ISO, and other styles

14

DePasquale, Allegra N., Shasta E. Webb, Rachel E. Williamson, Linda M. Fedigan, and Amanda D. Melin. "Testing the niche differentiation hypothesis in wild capuchin monkeys with polymorphic color vision." Behavioral Ecology 32, no. 4 (2021): 599–608. http://dx.doi.org/10.1093/beheco/arab001.

Full text

Abstract:

Abstract The polymorphic color vision system present in most North, Central, and South American monkeys is a textbook case of balancing selection, yet the mechanism behind it remains poorly understood. Previous work has established task-specific foraging advantages to different color vision phenotypes: dichromats (red-green colorblind) are more efficient foraging for invertebrates, while trichromats (color “normal” relative to humans) are more efficient foraging for “reddish” ripe fruit, suggesting that niche differentiation may underlie the maintenance of color vision variation. We explore a

APA, Harvard, Vancouver, ISO, and other styles

15

Surridge, Alison K., Sandra S. Suárez, Hannah M. Buchanan-Smith, and Nicholas I. Mundy. "Non-random association of opsin alleles in wild groups of red-bellied tamarins ( Saguinus labiatus ) and maintenance of the colour vision polymorphism." Biology Letters 1, no. 4 (2005): 465–68. http://dx.doi.org/10.1098/rsbl.2005.0367.

Full text

Abstract:

The remarkable X-linked colour vision polymorphism observed in many New World primates is thought to be maintained by balancing selection. Behavioural tests support a hypothesis of heterozygote advantage, as heterozygous females (with trichromatic vision) exhibit foraging benefits over homozygous females and males (with dichromatic vision) when detecting ripe fruit on a background of leaves. Whilst most studies to date have examined the functional relevance of polymorphic colour vision in the context of foraging behaviour, alternative hypotheses proposed to explain the polymorphism have remain

APA, Harvard, Vancouver, ISO, and other styles

16

Álvaro, Leticia, Humberto Moreira, Julio Lillo, and Anna Franklin. "Color preference in red–green dichromats." Proceedings of the National Academy of Sciences 112, no. 30 (2015): 9316–21. http://dx.doi.org/10.1073/pnas.1502104112.

Full text

Abstract:

Around 2% of males have red–green dichromacy, which is a genetic disorder of color vision where one type of cone photoreceptor is missing. Here we investigate the color preferences of dichromats. We aim (i) to establish whether the systematic and reliable color preferences of normal trichromatic observers (e.g., preference maximum at blue, minimum at yellow-green) are affected by dichromacy and (ii) to test theories of color preference with a dichromatic sample. Dichromat and normal trichromat observers named and rated how much they liked saturated, light, dark, and focal colors twice. Trichro

APA, Harvard, Vancouver, ISO, and other styles

17

Carroll, Joseph, Christopher J. Murphy, Maureen Neitz, James N. Ver Hoeve, and Jay Neitz. "Photopigment basis for dichromatic color vision in the horse." Journal of Vision 1, no. 2 (2001): 2. http://dx.doi.org/10.1167/1.2.2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Koida, K., I. Yokoi, G. Okazawa, et al. "Color vision test for dichromatic and trichromatic macaque monkeys." Journal of Vision 13, no. 13 (2013): 1. http://dx.doi.org/10.1167/13.13.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Tamura, Noriko, Yukiko Fujii, Phadet Boonkeow, and Budsabong Kanchanasaka. "Colour vision and food selection of Callosciurus finlaysonii (Sciuridae) in tropical seasonal forests." Journal of Tropical Ecology 31, no. 5 (2015): 449–57. http://dx.doi.org/10.1017/s0266467415000310.

Full text

Abstract:

Abstract:Finlayson's squirrel is frugivorous and distributed throughout the tropical seasonal forests of South-East Asia. To understand the resource use of tree squirrels in a tropical forest ecosystem, colour vision and fruit selection of Finlayson's squirrel were investigated. Under laboratory conditions, this species possesses dichromatic colour vision; it can discriminate white, yellow, violet, brown and black versus green similar to leaves, but it cannot discriminate orange and red versus green. In addition, squirrels can discriminate pale pink, pink and dark red versus green but cannot d

APA, Harvard, Vancouver, ISO, and other styles

20

Hemmi, J. M. "Dichromatic colour vision in an Australian marsupial, the tammar wallaby." Journal of Comparative Physiology A: Sensory, Neural, and Behavioral Physiology 185, no. 6 (1999): 509–15. http://dx.doi.org/10.1007/s003590050411.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Conklin, C., R. Watkins, S. Foo, G. Brooks, R. Roberts, and R. Perry. "Dichromatic color perception: a fast alternative for machine vision systems." Engineering Applications of Artificial Intelligence 15, no. 3-4 (2002): 351–55. http://dx.doi.org/10.1016/s0952-1976(02)00040-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Capilla, P., M. J. Luque, and M. A. Díez-Ajenjo. "Looking for the dichromatic version of a colour vision model." Journal of Optics A: Pure and Applied Optics 6, no. 9 (2004): 906–19. http://dx.doi.org/10.1088/1464-4258/6/9/014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Spaas, Julie, Werner F. Helsen, Maurits Adriaenssens, Sarah Broeckx, Luc Duchateau, and Jan H. Spaas. "Correlation between dichromatic colour vision and jumping performance in horses." Veterinary Journal 202, no. 1 (2014): 166–71. http://dx.doi.org/10.1016/j.tvjl.2014.07.016.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Moritz, G. L., and N. J. Dominy. "Selective advantages of mono- and dichromatic vision among nocturnal primates." Journal of Vision 10, no. 15 (2010): 1. http://dx.doi.org/10.1167/10.15.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Hiramatsu, Chihiro, Amanda D. Melin, William L. Allen, Constance Dubuc, and James P. Higham. "Experimental evidence that primate trichromacy is well suited for detecting primate social colour signals." Proceedings of the Royal Society B: Biological Sciences 284, no. 1856 (2017): 20162458. http://dx.doi.org/10.1098/rspb.2016.2458.

Full text

Abstract:

Primate trichromatic colour vision has been hypothesized to be well tuned for detecting variation in facial coloration, which could be due to selection on either signal wavelengths or the sensitivities of the photoreceptors themselves. We provide one of the first empirical tests of this idea by asking whether, when compared with other visual systems, the information obtained through primate trichromatic vision confers an improved ability to detect the changes in facial colour that female macaque monkeys exhibit when they are proceptive. We presented pairs of digital images of faces of the same

APA, Harvard, Vancouver, ISO, and other styles

26

Moritz, Gillian L., Perry S. Ong, George H. Perry, and Nathaniel J. Dominy. "Functional preservation and variation in the cone opsin genes of nocturnal tarsiers." Philosophical Transactions of the Royal Society B: Biological Sciences 372, no. 1717 (2017): 20160075. http://dx.doi.org/10.1098/rstb.2016.0075.

Full text

Abstract:

The short-wavelength sensitive (S-) opsin gene OPN1SW is pseudogenized in some nocturnal primates and retained in others, enabling dichromatic colour vision. Debate on the functional significance of this variation has focused on dark conditions, yet many nocturnal species initiate activity under dim (mesopic) light levels that can support colour vision. Tarsiers are nocturnal, twilight-active primates and exemplary visual predators; they also express different colour vision phenotypes, raising the possibility of discrete adaptations to mesopic conditions. To explore this premise, we conducted

APA, Harvard, Vancouver, ISO, and other styles

27

NEITZ, MAUREEN, JOSEPH CARROLL, AGNES RENNER, HOLGER KNAU, JOHN S. WERNER, and JAY NEITZ. "Variety of genotypes in males diagnosed as dichromatic on a conventional clinical anomaloscope." Visual Neuroscience 21, no. 3 (2004): 205–16. http://dx.doi.org/10.1017/s0952523804213293.

Full text

Abstract:

The hypothesis that dichromatic behavior on a clinical anomaloscope can be explained by the complement and arrangement of the long- (L) and middle-wavelength (M) pigment genes was tested. It was predicted that dichromacy is associated with an X-chromosome pigment gene array capable of producing only a single functional pigment type. The simplest case of this is when deletion has left only a single X-chromosome pigment gene. The production of a single L or M pigment type can also result from rearrangements in which multiple genes remain. Often, only the two genes at the 5′ end of the array are

APA, Harvard, Vancouver, ISO, and other styles

28

Ebeling, Wiebke, and Jan M. Hemmi. "Dichromatic Colour Vision in Wallabies as Characterised by Three Behavioural Paradigms." PLoS ONE 9, no. 1 (2014): e86531. http://dx.doi.org/10.1371/journal.pone.0086531.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Troscianko, Jolyon, Jared Wilson-Aggarwal, David Griffiths, Claire N. Spottiswoode, and Martin Stevens. "Relative advantages of dichromatic and trichromatic color vision in camouflage breaking." Behavioral Ecology 28, no. 2 (2017): 556–64. http://dx.doi.org/10.1093/beheco/arw185.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Di, Shi, Jay Neitz, and Gerald H. Jacobs. "Early color deprivation and subsequent color vision in a dichromatic monkey." Vision Research 27, no. 11 (1987): 2009–13. http://dx.doi.org/10.1016/0042-6989(87)90064-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

BONNARDEL, VALÉRIE. "Color naming and categorization in inherited color vision deficiencies." Visual Neuroscience 23, no. 3-4 (2006): 637–43. http://dx.doi.org/10.1017/s0952523806233558.

Full text

Abstract:

Dichromatic subjects can name colors accurately, even though they cannot discriminate among red-green hues (Jameson & Hurvich, 1978). This result is attributed to a normative language system that dichromatic observers developed by learning subtle visual cues to compensate for their impoverished color system. The present study used multidimensional scaling techniques to compare color categorization spaces of color-vision deficient (CVD) subjects to those of normal trichromat (NT) subjects, and consensus analysis estimated the normative effect of language on categorization. Subjects sorted 1

APA, Harvard, Vancouver, ISO, and other styles

32

Makarov, I. A. "Prevalence of Color Vision Deficiencies." Ophthalmology in Russia 17, no. 3 (2020): 414–21. http://dx.doi.org/10.18008/1816-5095-2020-3-414-421.

Full text

Abstract:

Purpose. The study of color deficiencies prevalence in young people, students of higher educational university.Materials and methods. The study was carried for the half year — fall semester. A total of 1,609 students were examined, aged 17–21. There were 1191 boys and 418 girls. The survey was conducted to determine the health groups in physical training and in various sports sections. An ophthalmologic examination determined refractive disorders and other ocular pathology, which is important for determining health groups. Rabkin polychromatic tables and Neitz color vision test (Neitz Lab (UW

APA, Harvard, Vancouver, ISO, and other styles

33

Mollon, J. D. "“Tho' she kneel'd in that place where they grew…” The uses and origins of primate colour vision." Journal of Experimental Biology 146, no. 1 (1989): 21–38. http://dx.doi.org/10.1242/jeb.146.1.21.

Full text

Abstract:

The disabilities experienced by colour-blind people show us the biological advantages of colour vision in detecting targets, in segregating the visual field and in identifying particular objects or states. Human dichromats have especial difficulty in detecting coloured fruit against dappled foliage that varies randomly in luminosity; it is suggested that yellow and orange tropical fruits have co-evolved with the trichromatic colour vision of Old World monkeys. It is argued that the colour vision of man and of the Old World monkeys depends on two subsystems that remain parallel and independent

APA, Harvard, Vancouver, ISO, and other styles

34

Toro, Javier. "Dichromatic illumination estimation without pre-segmentation." Pattern Recognition Letters 29, no. 7 (2008): 871–77. http://dx.doi.org/10.1016/j.patrec.2008.01.004.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Usui, Shiro, and Shigeki Nakauchi. "Simulation study of normal and dichromatic color vision by multilayered neural networks." Neuroscience Research Supplements 16 (January 1991): 122. http://dx.doi.org/10.1016/0921-8696(91)91002-a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Krebs, Alexandre, Yannick Benezeth, and Franck Marzani. "Intrinsic RGB and multispectral images recovery by independent quadratic programming." PeerJ Computer Science 6 (February 10, 2020): e256. http://dx.doi.org/10.7717/peerj-cs.256.

Full text

Abstract:

This work introduces a method to estimate reflectance, shading, and specularity from a single image. Reflectance, shading, and specularity are intrinsic images derived from the dichromatic model. Estimation of these intrinsic images has many applications in computer vision such as shape recovery, specularity removal, segmentation, or classification. The proposed method allows for recovering the dichromatic model parameters thanks to two independent quadratic programming steps. Compared to the state of the art in this domain, our approach has the advantage to address a complex inverse problem i

APA, Harvard, Vancouver, ISO, and other styles

37

Siniscalchi, Marcello, Serenella d'Ingeo, Serena Fornelli, and Angelo Quaranta. "Are dogs red–green colour blind?" Royal Society Open Science 4, no. 11 (2017): 170869. http://dx.doi.org/10.1098/rsos.170869.

Full text

Abstract:

Neurobiological and molecular studies suggest a dichromatic colour vision in canine species, which appears to be similar to that of human red–green colour blindness. Here, we show that dogs exhibit a behavioural response similar to that of red–green blind human subjects when tested with a modified version of a test commonly used for the diagnosis of human deuteranopia (i.e. the Ishihara's test). Besides contributing to increasing the knowledge about the perceptual ability of dogs, the present work describes for the first time, to our knowledge, a method that can be used to assess colour vision

APA, Harvard, Vancouver, ISO, and other styles

38

MANNING, JEREMY R., and DAVID H. BRAINARD. "Optimal design of photoreceptor mosaics: Why we do not see color at night." Visual Neuroscience 26, no. 1 (2009): 5–19. http://dx.doi.org/10.1017/s095252380808084x.

Full text

Abstract:

AbstractWhile color vision mediated by rod photoreceptors in dim light is possible (Kelber & Roth, 2006), most animals, including humans, do not see in color at night. This is because their retinas contain only a single class of rod photoreceptors. Many of these same animals have daylight color vision, mediated by multiple classes of cone photoreceptors. We develop a general formulation, based on Bayesian decision theory, to evaluate the efficacy of various retinal photoreceptor mosaics. The formulation evaluates each mosaic under the assumption that its output is processed to optimally es

APA, Harvard, Vancouver, ISO, and other styles

39

Drew, Mark S. "Optimization approach to dichromatic images." Journal of Mathematical Imaging and Vision 3, no. 2 (1993): 187–203. http://dx.doi.org/10.1007/bf01250529.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Thorstenson, Christopher A., Adam D. Pazda, and Andrew J. Elliot. "Social Perception of Facial Color Appearance for Human Trichromatic Versus Dichromatic Color Vision." Personality and Social Psychology Bulletin 46, no. 1 (2019): 51–63. http://dx.doi.org/10.1177/0146167219841641.

Full text

Abstract:

Typical human color vision is trichromatic, on the basis that we have three distinct classes of photoreceptors. A recent evolutionary account posits that trichromacy facilitates detecting subtle skin color changes to better distinguish important social states related to proceptivity, health, and emotion in others. Across two experiments, we manipulated the facial color appearance of images consistent with a skin blood perfusion response and asked participants to evaluate the perceived attractiveness, health, and anger of the face (trichromatic condition). We additionally simulated what these f

APA, Harvard, Vancouver, ISO, and other styles

41

Li, Wei, and Steven H. DeVries. "Bipolar cell pathways for color and luminance vision in a dichromatic mammalian retina." Nature Neuroscience 9, no. 5 (2006): 669–75. http://dx.doi.org/10.1038/nn1686.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Neitz, Jay, and Gerald H. Jacobs. "Spectral sensitivity of cones in an ungulate." Visual Neuroscience 2, no. 2 (1989): 97–100. http://dx.doi.org/10.1017/s0952523800011949.

Full text

Abstract:

AbstractUngulates have been classified as having arrhythmic eyes in the sense that they contain features appropriate both to diurnal and nocturnal life. The former is typically associated with multiple classes of cones and a color-vision capacity. To see if an arrhythmic animal has these features, the number of cone classes was determined and the spectra of these cones were measured in a common ungulate, the domestic pig (Sus scrofa). Examination with electroretinogram (ERG) flicker photometry revealed the presence of two classes of cones in the pig's eye having average maximum sensitivity (λm

APA, Harvard, Vancouver, ISO, and other styles

43

Geisbauer, Gudrun, Ulrike Griebel, Axel Schmid, and Brian Timney. "Brightness discrimination and neutral point testing in the horse." Canadian Journal of Zoology 82, no. 4 (2004): 660–70. http://dx.doi.org/10.1139/z04-026.

Full text

Abstract:

Equine brightness discrimination ability and color discrimination were measured using a two-choice discrimination task. Two Haflinger horses (Equus caballus L., 1758) were trained to discriminate 30 different shades of grey varying from low to high relative brightness. Their ability to distinguish shades of grey was poor, with calculated Weber fractions of 0.42 and 0.45. In addition, a "neutral point" test to determine the dimensionality of color vision was carried out. Three hues of blue–green were tested versus a range of grey targets with brightnesses similar to those of the blue–green targ

APA, Harvard, Vancouver, ISO, and other styles

44

ARAÚJO, ANTÔNIO C., JULIA J. DIDONET, CAROLINA S. ARAÚJO, PATRÍCIA G. SALETTI, TÂNIA R. J. BORGES, and VALDIR F. PESSOA. "Color vision in the black howler monkey (Alouatta caraya)." Visual Neuroscience 25, no. 3 (2008): 243–48. http://dx.doi.org/10.1017/s0952523808080292.

Full text

Abstract:

Electrophysiological and molecular genetic studies have shown that howler monkeys (Alouatta) are unique among all studied platyrrhines: they have the potential to display trichromatic color vision among males and females. This study examined the color discrimination abilities of four howler monkeys (Alouatta caraya) through a series of tasks involving a behavioral paradigm of discrimination learning. The animals were maintained and housed as a group in the Zoological Gardens of Brasília and were tested in their own home cages. Stimuli consisting of pairs of Munsell color chips were presented i

APA, Harvard, Vancouver, ISO, and other styles

45

Wilder, Heath D., Ulrike Grünert, Barry B. Lee, and Paul R. Martin. "Topography of ganglion cells and photoreceptors in the retina of a New World monkey: The marmoset Callithrix jacchus." Visual Neuroscience 13, no. 2 (1996): 335–52. http://dx.doi.org/10.1017/s0952523800007586.

Full text

Abstract:

AbstractWe studied the anatomical substrates of spatial vision in a New World monkey, the marmoset Callithrix jacchus. This species has good visual acuity and a foveal specialization which is qualitatively similar to that of humans and other Old World primates.We measured the spatial density of retinal ganglion cells and photoreceptors, and calculated the relative numbers of these cell populations. We find that ganglion cells outnumber photoreceptors by between 2.4:1 and 4.2:1 in the fovea. The peak sampling density of ganglion cells is close to 550,000 cells/mm2. This value falls by almost 10

APA, Harvard, Vancouver, ISO, and other styles

46

SZMAJDA, BRETT A., ULRIKE GRÜNERT, and PAUL R. MARTIN. "Mosaic properties of midget and parasol ganglion cells in the marmoset retina." Visual Neuroscience 22, no. 4 (2005): 395–404. http://dx.doi.org/10.1017/s0952523805224021.

Full text

Abstract:

We measured mosaic properties of midget and parasol ganglion cells in the retina of a New World monkey, the common marmosetCallithrix jacchus. We addressed the functional specialization of these populations for color and spatial vision, by comparing the mosaic of ganglion cells in dichromatic (“red–green color blind”) and trichromatic marmosets. Ganglion cells were labelled by photolytic amplification of retrograde marker (“photofilling”) following injections into the lateral geniculate nucleus, or by intracellular injection in anin vitroretinal preparation. The dendritic-field size, shape, an

APA, Harvard, Vancouver, ISO, and other styles

47

Ogawa, Yuri, Marcin Falkowski, Ajay Narendra, Jochen Zeil, and Jan M. Hemmi. "Three spectrally distinct photoreceptors in diurnal and nocturnal Australian ants." Proceedings of the Royal Society B: Biological Sciences 282, no. 1808 (2015): 20150673. http://dx.doi.org/10.1098/rspb.2015.0673.

Full text

Abstract:

Ants are thought to be special among Hymenopterans in having only dichromatic colour vision based on two spectrally distinct photoreceptors. Many ants are highly visual animals, however, and use vision extensively for navigation. We show here that two congeneric day- and night-active Australian ants have three spectrally distinct photoreceptor types, potentially supporting trichromatic colour vision. Electroretinogram recordings show the presence of three spectral sensitivities with peaks ( λ max ) at 370, 450 and 550 nm in the night-active Myrmecia vindex and peaks at 370, 470 and 510 nm in t

APA, Harvard, Vancouver, ISO, and other styles

48

Regan, B. C., C. Julliot, B. Simmen, F. Viénot, P. Charles–Dominique, and J. D. Mollon. "Fruits, foliage and the evolution of primate colour vision." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 356, no. 1407 (2001): 229–83. http://dx.doi.org/10.1098/rstb.2000.0773.

Full text

Abstract:

Primates are apparently unique amongst the mammals in possessing trichromatic colour vision. However, not all primates are trichromatic. Amongst the haplorhine (higher) primates, the catarrhines possess uniformly trichromatic colour vision, whereas most of the platyrrhine species exhibit polymorphic colour vision, with a variety of dichromatic and trichromatic phenotypes within the population. It has been suggested that trichromacy in primates and the reflectance functions of certain tropical fruits are aspects of a coevolved seed–dispersal system: primate colour vision has been shaped by the

APA, Harvard, Vancouver, ISO, and other styles

49

Jacobs, Gerald H., John A. Fenwick, and Gary A. Williams. "Cone-based vision of rats for ultraviolet and visible lights." Journal of Experimental Biology 204, no. 14 (2001): 2439–46. http://dx.doi.org/10.1242/jeb.204.14.2439.

Full text

Abstract:

SUMMARY Rats (Rattus norvegicus) have two classes of cone, one containing an ultraviolet (UV)-sensitive photopigment and the other housing a pigment maximally sensitive in the middle (M) wavelengths of the visible spectrum. The manner in which signals from these two cone types contribute to rat vision was investigated through recordings of a gross electrical potential (the electroretinogram, ERG) and behavioral discrimination tests. Spectral sensitivity functions obtained from both types of measurement indicate clear contributions from each of the cone classes, but there is a marked enhancemen

APA, Harvard, Vancouver, ISO, and other styles

50

Huynh, Cong Phuoc, and Antonio Robles-Kelly. "A Solution of the Dichromatic Model for Multispectral Photometric Invariance." International Journal of Computer Vision 90, no. 1 (2010): 1–27. http://dx.doi.org/10.1007/s11263-010-0333-y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!