Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"color vision"”.
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A low-cost color vision tracking system
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Color vision: Studies on gecko cone visual pigment
Cone visual pigments are responsible for color vision. Although a large amount is known about rod pigments, relatively little is known about cone pigments. This thesis describes the identification and characterization of the photointermediates of gecko cone visual pigment P521: batho (ca. 570 nm), …
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An Empirical Test of the Grassmann-Maxwell Theory of Color Vision
Made available in DSpace on 2014-12-03T23:50:45Z (GMT). No. of bitstreams: 1 0013578.pdf: 4528752 bytes, checksum: 5c8dbd1fd160a80bd28233fccc0fb790 (MD5) Previous issue date: 1955
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Black and white referencing paths and the retinex theory of color vision.
Thesis: B.S., Massachusetts Institute of Technology, Department of Physics, 1976
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Color Vision and its mechanisms in College students with Attention Deficit Hyperactivity Disorder
… accumulating evidence attests to anomalies in vision in ADHD that cannot be explained by existing models of ADHD. In particular, children with ADHD have been found to exhibit color perception problems (particularly blue), which may be best explained by the `retinal dopaminergic hypothesis.' The …
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Physiological and Behavioral Studies of Color Vision in Fiddler Crabs (Brachyura, Ocypodidae, Genus Uca)
Made available in DSpace on 2014-12-12T01:27:44Z (GMT). No. of bitstreams: 1 7405600.pdf: 3056319 bytes, checksum: 8a4e7e22f315901387e2c24c56f5c971 (MD5) Previous issue date: 1973
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Assessing Color Discrimination
… purpose of this study was to evaluate human color vision discriminability within individuals that have color normal vision and those that have color deficient vision. Combinations of 15 colors were used from a list of colors recommended for computer displays in Air Traffic Control settings, a …
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A measurement of the extent of the color-sensitive areas of the retina and of the wavelengths of light stimulating the respective receptor mechanisms
… the writer was directed toward the phenomena of color vision in 1927 as a result of attending concurrently two courses in the University of California touching upon the subject, but treating it quite differently with results far from mutually consistent. Prof. R. S. Minor, in his course on …
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The Distance between Colors; Using DeltaE* to Determine Which Colors Are Compatible
<p>The focus of this study was to identify colors that can be easily distinguished from one another by normal color vision and slightly deficient color vision observers, and then test those colors to determine the significance of color separation as an indicator of color discriminability for both …
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The natural history of a lost sense
… and evaluated. Notably, the development of tri-color vision may have replaced pheromones for sexual selection in these lineages. This may explain the human proclivity for visual information over pheromonal cues.
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Contrast adaptation reveals increased organizational complexity of chromatic processing in the visual evoked potential
… and single-unit recordings suggest that color vision comprises multiple stages of processing. Post-receptoral channels appear to consist of both a stage of broadly-tuned opponent channels that compare cone signals, and a subsequent stage, which includes cells tuned to many different …
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Tactile perception of spatially distributed vibratory stimuli on the fingerpad
… number of contactors. As an analogy between color vision and tactile perception, a spatial configuration of the multiple contactors was proposed to deliver the intermediate pitch using the compound waveform defined as a sinusoidal stimulus which was presented by four contactors vibrating with …
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Visual Opsin Diversity in Anurans
… of visual pigments and thus alter dim-light and color vision. Some of the amino acid changes observed are known to tune spectral sensitivity in other vertebrates, and tests for positive selection revealed additional candidate tuning sites in LWS. The observed variation cannot fully be explained …
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An Investigation of Color Memory as a Function of Hue, Saturation, Lightness and Observer Imagery Vividness for Blue, Green and Orange Test Hues
… participated in an experiment assessing color memory via a PowerPoint '97 computer display program which varied one of the three dimensions of hue, saturation and lightness at a time. Consistent with previous research, errors were greater for the lightness conditions followed by …
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An Investigation of the Effects of Practice on Color Memory as a Function of Condition, Dimension and Color
… factorial design experiment that assessed color memory as a function of condition (practice with feedback, practice without feedback and no practice), dimension (hue, saturation and lightness) and color (red, yellow, green and blue). Attention was focused on the distinction between memory …
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The Effect of Jungle Light Spectrum on the Fearfulness of Commercial Broiler Chickens
… Chickens are prey animals that depend on their vision safety. Chickens “see” the word differently than humans and other animals in several significant ways. They have four cones for color vision compared to three for humans. This results in a broader light spectrum range especially in the lower …
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Color : functional organization and behavior
Color is a fundamental aspect of visual experience that confers a myriad of behavioral advantages: finding objects in cluttered scenes, recognizing familiar objects, and gleaning information about the material composition and state of objects (e.g. the edibility of fruit) and agents in the world …
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A human spatial-chromatic vision model for evaluating electronic displays
… dissertation examines those attributes of full-color display systems (particularly color matrix displays) which degrade image quality. Based on this analysis, it is suggested that a comprehensive metric should measure image quality in terms of transmitted signal and noise modulation, both …
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