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  • 1
    Keywords: Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (639 pages)
    Edition: 1st ed.
    ISBN: 9783709180327
    Series Statement: Fortschritte der Chemie Organischer Naturstoffe Progress in the Chemistry of Organic Natural Products Series ; v.13
    Language: German
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  • 2
    Keywords: Metals-toxicity. ; Carcinogens. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (209 pages)
    Edition: 1st ed.
    ISBN: 9783642698729
    Series Statement: Progress in Clinical Biochemistry and Medicine Series ; v.1
    DDC: 612.015
    Language: English
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  • 3
    Online Resource
    Online Resource
    Berlin/Boston :Walter de Gruyter GmbH,
    Keywords: Color vision. ; Electronic books.
    Description / Table of Contents: No detailed description available for "Color Vision".
    Type of Medium: Online Resource
    Pages: 1 online resource (360 pages)
    Edition: 1st ed.
    ISBN: 9783110806984
    Language: English
    Note: Intro -- Introduction -- I. Color Vision in Art and Science -- 1. Aging through the Eyes of Monet -- 1.1 Introduction -- 1.2 A Link between Sunlight and Aging -- 1.3 The Trivariance of Color Mixture: Maxwell and Helmholtz -- 1.4 Monet's Early Impressionistic Style -- 1.5 Monet's Years in Argenteuil and Vètheuil -- 1.6 The Opponent Code for Color Appearance: Hering -- 1.7 Monet's Response to Pointillism and Divisionism -- 1.8 Hay Stack and Cathedral Series -- 1.9 Monet Returns to London -- 1.10 Water Lilies and Cataracts -- 1.11 Summary -- References -- II. Physiology and Neuroethology -- 2. Physiological and Psychophysical Simulations of Color Vision in Humans and Animals -- 2.1 Introduction -- 2.2 Color Stimuli -- 2.3 Psychophysics of Color Vision -- 2.4 Psychophysical Color Spaces -- 2.5 Neurophysiology of Color Vision -- 2.6 Physiological Color Spaces -- 2.7 Psychophysical and Physiological Simulations of Color Vision -- 2.8 Conscious vs. Unconscious Judgments -- 2.9 Conclusions -- References -- 3. Receptors, Channels and Color in Primate Retina -- 3.1 Introduction -- 3.2 Physiology and Anatomy in the Retina -- 3.3 Conclusions -- References -- 4. Chromatic Processing in the Lateral Geniculate Nucleus of the Common Marmoset (Callithrix jacchus) -- 4.1 Introduction -- 4.2 Spectral Responsivities -- 4.3 Responses of LGN Cells to Various Photoreceptor Contrasts -- 4.4 Selective Photoreceptor Stimulation in Human Observers -- 4.5 Summary -- References -- 5. Molecular Genetics and the Biological Basis of Color Vision -- 5.1 Introduction -- 5.2 Background -- 5.3 Spectral Tuning of M- and L-Cone Pigments -- 5.4 Color Vision Defects -- 5.5 Variation in Normal Color Vision -- 5.6 What Can Visual Pigment Gene Expression Tell Us about the Architecture of the Retina? -- References. , 6. Source Analysis of Color-Evoked Potentials in a Realistic Head Model Confirmed by Functional MRI -- 6.1 Introduction -- 6.2 Methods -- 6.3 Results -- 6.4 Discussion -- 6.5 Summary -- References -- 7. Wavelength Information Processing versus Color Perception: Evidence from Blindsight and Color-Blind Sight -- 7.1 Introduction -- 7.2 Wavelength Information Processing -- 7.3 Segregation of Wavelength and Intensity Information and Constancy -- 7.4 Color Perception -- References -- 8. Color Vision in Lower Vertebrates -- 8.1 Introduction -- 8.2 Wavelength Discrimination in Lower Vertebrates -- 8.3 Color Constancy and Color Contrast -- 8.4 Color Vision and Other Visual Functions: Evidence for Parallel Processing of Visual Information -- 8.5 Color Perception -- 8.6 Summary -- References -- 9. Color Vision: Ecology and Evolution in Making the Best of the Photic Environment -- 9.1 Introduction -- 9.2 Palaeontological Record -- 9.3 Daylight and Color Vision -- 9.4 Colorimetry -- 9.5 Color Spaces -- 9.6 Evolution of Floral Colors and Color Vision -- 9.7 Color Patterns in Flowers -- 9.8 Trichromacy and Tetrachromacy -- 9.9 Conclusions -- References -- III. Psychology and Philosophy -- 10. The Perception of Blackness: An Historical and Contemporary Review -- 10.1 Introduction -- 10.2 The Phenomenology of Blackness -- 10.3 Historical Review -- 10.4 Physiological Mechanisms -- 10.5 Conclusion -- References -- 11. Basic Color Terms and Basic Color Categories -- Discussion and Summary -- References -- 12. Color Perception: From Grassman Codes to a Dual Code for Object and Illumination Colors -- 12.1 Introduction -- 12.2 Elementaristic vs. Ecological Perspectives in Color Research -- 12.3 Attributes of Color -- 12.4 Early Color Coding and the Elementaristic Approach -- 12.5 Ecological and Computational Perspectives. , 12.6 Center-Surround Configurations as Minimal Stimuli for Triggering a Dual Code for 'Object Colors' and 'Illumination Colors' -- References -- 13. Color Contrast Gain Control -- 13.1 Introduction -- 13.2 Model Components -- 13.3 Color Image Processing -- 13.4 Discussion -- 13.5 Summary -- References -- 14. Binocular Brightness Combination: A Mechanism for Combining Two Sources of Rather Similar Information -- 14.1 Intensity Invariance of Binocular Brightness -- 14.2 Methods -- 14.3 Results -- 14.4 Discussion -- 14.5 Summary -- References -- 15. Inferences about Infant Color Vision -- 15.1 Introduction -- 15.2 Inferences from Luminosity -- 15.3 Inferences from Silent Substitution -- 15.4 Inferences about Rod Intrusion -- 15.5 Inferences about M- and L-Cones -- 15.6 Summary -- References -- IV. Color Metrics and Application -- 16. Dichromacy - The Simplest Type of Color Vision -- 16.1 Introduction: An Initial Overview -- 16.2 The Trichromatic Instrumental Color Space 3VBGR -- 16.3 Measuring the Deuteranopic Missing Color and Reducing Trichromacy to Deuteranopia -- 16.4 The Transition from the Instrumental Trichromatic Space to the Instrumental Deuteranopic Space -- 16.5 The Transformation from the Trichromatic Instrumental Color Space to the Deuteranopic Opponent-Color Space -- 16.6 The Role of the Fundamental Color Space -- 16.7 Construction of the Fundamental Color Spaces 3VPTD and 2VPT and the Deuteranopic Opponent-Color Channels -- 16.8 A Synopsis of Deuteranopia -- 16.9 A Synopsis of Dichromacy -- 16.10 A Lattice-Theoretical Classification of Dichromacy and Other Color Deficiencies -- 16.11 Concluding Remarks -- 16.12 Summary -- References -- 17. Current CIE Work to Achieve Physiologically-Correct Color Metrics -- 17.1 Introduction -- 17.2 Cone Excitation Spectra -- 17.3 Further Aspects -- 17.4 Summary -- References. , 18. Use of Computer Graphics in PostScript for Color Didactics -- 18.1 Introduction -- 18.2 Multiplicity of Colors -- 18.3 Color Solid, Basic Colors and Color Attributes -- 18.4 Spectrum and 3-Dimensional Color Values -- 18.5 Color Measurement, Mixture and Contrast -- 18.6 Colors: Equally Spaced and Thresholds -- 18.7 Opponent Achromatic Color Vision -- 18.8 Sensitivity, Saturation and Chromaticity -- 18.9 Summary -- References -- List of Contributors -- Index.
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  • 4
    ISSN: 1435-1803
    Keywords: nitrendipine ; prostaglandin F2α ; endothelium ; methylene blue ; porcincarteries
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Vascular activity of nitrendipine (NTD) in different depolarized and prostaglandin F2α (PGF2α)-precontracted isolated porcine arteries was examined in the presence and absence of methylene blue (MB). Presence of MB potentiated the PGF2α-induced contractions in all vessels studied and reduced the response of NTD in coronary and basilar arteries seven- to 23-fold. Only in ulnar arteries was the affinity of NTD slightly increased. In contrast, MB did not modify the affinity of papaverine under these conditions. Furthermore, MB had no influence on KCl-induced contractions and subsequent vasorelaxation by NTD. It is proposed that MB impaired endothelium derived relaxing factor, thereby stimulating and/or increasing the calcium influx through receptor-operated calcium channels.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1435-1803
    Keywords: Prostaglandin F2α ; nitrendipine ; 3-ester side-chain derivatives ; endothelium ; porcine basilar arteries
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Vascular endothelium modulates the effect of various vasoconstricting mediators as well as the affinity of dihydropyridine-type calcium entry blockers. To further investigate this influence, vasoconstriction by PGF2α as opposed to KCl and the affinity of nitrendipine and some related 3-ester side-chain derivatives were determined in isolated porcine basilar arteries in the presence and in the absence of intact endothelium, as well as in the presence of methylene blue. Treatment with methylene blue or mechanical endothelial damage increased the contractile work of basilar arteries stimulated by PGF2α and reduced the affinity of the dihydropyridines in such precontracted vessels. Both experimental conditions resulted in nearly the same effect. In addition, the degree of intact endothelium, as determined by substance-P-induced vasodilation, significantly correlated with the corresponding efficacy of all dihydropyridines examined. In contrast, KCl-mediated contractions remained unchanged. It is suggested that the endothelium (probably due to the production and release of endothelium-derived vasorelaxing factors, such as EDRF and/or prostacyclin) may attenuate PGF2α induced transmembrane calcium influx through receptor operated calcium channels, whereas potential operated calcium channels seems to be unaffected.
    Type of Medium: Electronic Resource
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