A visão cores está diretamente ligada às emoções e estas ao sistema nervoso. Respostas de diâmetro pupilar e de rastreamento do olhar são influenciados pelo que vemos. Nesse trabalho foram estudados o comportamento do olhar, por meio do rastreamento do olhar e do diâmetro pupilar em dicromatas e em tricomatas usando como ferramenta de estímulos visuais fotos retiradas do banco de dados do IAPS, além disso foram medidas as reações emocionais desses indivíduos por meio do SAM, em relação às três dimensões das emoções, valência, alerta e dominância. O objetivo foi observar como o conteúdo emocional de imagens pode ser mediado pela cor e provocar reações emocionais nesses indivíduos. Foram comparadas as respostas de 10 indivíduos dicromatas congênitos com as respostas de 10 indivíduos tricomatas. Valência em fotos coloridas são diferentes quando comparamos dicromatas e tricomatas. A dimensões das emoções e os movimentos oculares em fotos positivas coloridas são diferentes entre os dicromatas e tricomatas. Respostas de valência e diâmetro pupilar nas fotos neutras coloridas são diferentes entre dicromatas e tricomatas. Respostas de alerta e valência em fotos negativas são diferentes entre dicromatas e tricomatas. Respostas de rastreamento do olhar são diferentes em dicromatas em relação às fotos positivas. Respostas de valência e alerta são diferentes em dicromatas em relação às fotos neutras. Respostas de dominância, movimentos sacádicos e movimentos não classificados form diferentes nas fotos positivas entre os tricomatas. Resposta de valência nas fotos negativas e nas fotos neutras são diferentes entre os dicromatas e tricomatas. As cores podem ter influência diferentemente na forma como os dicromatas e os tricomatas reagem em relação à estímulos visuais de forma diferente / The color vison is directly linked to emotions e they to the nervous system. Feedback from the pupil diameter and eyetracker are influenced by what we see. In the presente work we studied the eyes behavior by gazing eyetracker and pupil diameter in dichromats and thichromats using as a tool visual stimulus that were taken from the IAPS photos database, and the emotional reactions were measured from these people by using the SAM, in the three dimensions of emotions, valence, arousal and dominance. The aim of this study was to observe how the emotional content of photos can be mediate by colors and provoke emotinal reaction on these people. We compared the answears from 10 trichromats with the answears from 10 congenitol trichromats. The three dimensions of emotions and the eye movements are diferent between dichromats and thricomats in posivite photos. Valence and pupil diameter in colourful neutral photos between dichromat and trichromat are different. Valence and arousal in negative photos are different between dichromat and trichromat. Eyetracking in positive photos are different between dichromat and trichromat. Valence and arousal are different in dichromat regarding the neutral photos. Dominance, saccadic movements and unclassified movements were different in positive photos to the trichromats. Valence in negative and neutral photos are different beetween dichromat and trichromat. The colours can influence differently on the way dichromat and trichromat people react to the visual stimulus

We argue that one of the early goals of color vision is to distinguish one kind of material from another. Accordingly, we show that when a pair of image regions is such that one region has greater intensity at one wavelength than at another wavelength, and the second region has the opposite property, then the two regions are likely to have arisen from distinct materials in the scene. We call this material change circumstance the 'opposite slope sign condition.' With this criterion as a foundation, we construct a representation of spectral information that facilitates the recognition of material changes. Our theory has implications for both psychology and neurophysiology. In particular, Hering's notion of opponent colors and psychologically unique primaries, and Land's results in two-color projection can be interpreted as different aspects of the visual system's goal of categorizing materials. Also, the theory provides two basic interpretations of the function of double-opponent color cells described by neurophysiologists.

Color vision can affect our assumptions of an animals’ natural history. It can be determined by testing sensory or perception ability, which was employed here. Two Asian small-clawed otters (Aonyx cinerea), of opposite sexes, housed at ZooAtlanta, were trained via operant conditioning to discriminate stimuli within 7 tasks, primarily in a two-choice fashion. Varying shades of the colors blue, green and red were tested against varying greys, all which differed in intensity, served as the stimuli for the first 4 tasks. The remaining 3 tasks, the colors were tested against each other. The male reached criterion for the first 6 tasks, indicating an ability to discriminate the stimuli based on color. The female however participated only in 2, and could not achieve criterion as set, though there were indications of discrimination ability. Taken together with sensory work on two related otter species, Asian small-clawed otters possess color vision.

Thesis (Ph. D.)--University of California, San Diego, 2003. / Vita. Includes bibliographical references (leaves 371-389).

Comparisons of functionally important changes at the molecular level in model systems have identified key adaptations driving isolation and speciation. For example, recent studies suggest mutations in opsins, the genes that encode retinal photoreceptors, influence colour-based female mate choice and have, thereby, contributed to the radiation of African cichlids. To test the hypothesis that the evolution of elaborate colouration in guppies (Poecilia reticulata) is also associated with opsin gene diversity, long wavelength-sensitive (LWS) opsin genes were sequenced in six species of the family Poeciliidae. Sequences of four LWS genes were amplified from the guppy genome and from mRNA isolated from adult eyes. Variation in expression was quantified using qPCR. Three of the four paralogs encode opsins that appear to be most sensitive to different wavelengths of light, as they vary at key amino acid positions. This family of LWS opsin genes was produced by a diversity of duplication events. One gene appears to be the product of retrotransposition. Between-gene PCR and DNA sequencing show that two of the guppy LWS opsins are linked in an inverted orientation. The fourth locus is a hybrid, with the first five exons most similar to one of the tandem duplicates and the last exon most similar to the other. The single-exon LWS opsin was produced prior to the divergence of families Fundulidae and Poeciliidae. The inverted tandem duplication event occurred near the base of the poecilid tree, in the common ancestor of Poecilia and Xiphophorus, and the hybrid locus is found only in the genus Poecilia. Enhanced wavelength discrimination, a likely consequence of opsin gene duplication and divergence, might have been an evolutionary prerequisite for colour based sexual selection and have led to the extraordinary colouration now observed in male guppies and in many other poeciliids.

Thesis (Ph. D.)--University of Chicago, Department of Psychology, March 2003. / Includes bibliographical references. Also available on the Internet.

Thesis (M.S.)--Ohio University, November, 2002. / Title from PDF t.p. Includes bibliographical references (leaves 46-48).

Thesis (Ph.D.)--University of Melbourne, The National Vision Research Institute of Australia and Dept. of Optometry & Vision Sciences, 2007. / Typescript. Includes bibliographical references (leaves 95-111).

Thesis--Auburn University, 2009. / Abstract. Vita. Includes bibliographical references.

Thesis (Ed. D.)--Illinois State University, 1975. / Title from title page screen, viewed Nov. 8, 2004. Dissertation Committee: Max Rennels (chair), Richard Salome, Fred Mills, Harold Phelps, Evelyn Rex, Angel Diaz. Includes bibliographical references (leaves 74-76) and abstract. Also available in print.