دورية أكاديمية

Effect of the Decrease in Luminance Noise Range on Color Discrimination of Dichromats and Trichromats.

التفاصيل البيبلوغرافية
العنوان: Effect of the Decrease in Luminance Noise Range on Color Discrimination of Dichromats and Trichromats.
المؤلفون: de Loureiro TMG; Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil., Brodeur K; University of Michigan, Ann Arbor, MI, United States., Schade G; Southern College of Optometry, Memphis, TN, United States., Brito FAC; Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil., Salomao RC; Núcleo de Medicina Tropical, Universidade Federal do Pará, Belém, Brazil., Miquilini L; Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil., Bonci DMO; Instituto de Psicologia, Universidade de São Paulo, São Paulo, Brazil., Baran LCP; Instituto de Psicologia, Universidade de São Paulo, São Paulo, Brazil., Hauzman E; Instituto de Psicologia, Universidade de São Paulo, São Paulo, Brazil., Goulart PRK; Núcleo de Teoria e Pesquisa do Comportamento, Universidade Federal do Pará, Belém, Brazil., Cortes MIT; Centro de Ciências da Saúde, Universidade Federal do Amapá, Macapá, Brazil., Ventura DF; Instituto de Psicologia, Universidade de São Paulo, São Paulo, Brazil., Fitzgerald MEC; Southern College of Optometry, Memphis, TN, United States.; Biology, Didactic Faculty and Anatomy and Neurobiology, Christian Brothers University, Memphis, TN, United States.; University of Tennessee Health Science Center, Memphis, TN, United States., Souza GS; Instituto de Ciências Biológicas, Universidade Federal do Pará, Belém, Brazil.; Núcleo de Medicina Tropical, Universidade Federal do Pará, Belém, Brazil.
المصدر: Frontiers in behavioral neuroscience [Front Behav Neurosci] 2018 Nov 23; Vol. 12, pp. 292. Date of Electronic Publication: 2018 Nov 23 (Print Publication: 2018).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Frontiers Research Foundation Country of Publication: Switzerland NLM ID: 101477952 Publication Model: eCollection Cited Medium: Print ISSN: 1662-5153 (Print) Linking ISSN: 16625153 NLM ISO Abbreviation: Front Behav Neurosci Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Lausanne, Switzerland : Frontiers Research Foundation, 2007-
مستخلص: Color vision assessment can be done using pseudoisochromatic stimuli, which has a luminance noise to eliminate brightness differences between the target and background of the stimulus. It is not clear the influence of the luminance noise on color discrimination. We investigated the effect of change in the luminance noise limits on color discrimination. Eighteen trichromats and ten congenital dichromats (eight protans, two deutans) had their color vision evaluated by the Cambridge Colour Test, and were genetically tested for diagnostic confirmation. The stimuli were composed of a mosaic of circles in a 5° circular field. A subset of the circles differed in chromaticity from the remaining field, forming a letter C. Color discrimination was estimated in stimulus conditions differing in luminance noise range: (i) 6-20 cd/m 2 ; (ii) 8-18 cd/m 2 ; (iii) 10-16 cd/m 2 ; and (iv) 12-14 cd/m 2 . Six equidistant luminance values were used within the luminance noise limits with the mean stimulus luminance maintained constant under all conditions. A four-alternative, forced-choice method was applied to feed a staircase procedure to estimate color discrimination thresholds along eight chromatic axes. An ellipse model was adjusted to the eight color discrimination thresholds. The parameters of performance were threshold vector lengths and the ellipse area. Results were compared using the Kruskal-Wallis test with a significance level of 5%. The linear function model was applied to analyze the dependence of the discrimination parameters on the noise luminance limits. The first derivative of linear function was used as an indicator of the rate of change in color discrimination as a function of luminance noise changes. The rate of change of the ellipse area as a function of the luminance range in dichromats was higher than in trichromats ( p < 0.05). Significant difference was also found for individual thresholds in half of the axes we tested. Luminance noise had a greater effect on color discrimination ability of dichromats than the trichromats, especially when the chromaticities were close to their protan and deutan color confusion lines.
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معلومات مُعتمدة: T37 MD001378 United States MD NIMHD NIH HHS
فهرسة مساهمة: Keywords: color discrimination; color vision; dichromats; luminance noise; trichromats
تواريخ الأحداث: Date Created: 20181212 Latest Revision: 20201001
رمز التحديث: 20221213
مُعرف محوري في PubMed: PMC6265314
DOI: 10.3389/fnbeh.2018.00292
PMID: 30532699
قاعدة البيانات: MEDLINE
الوصف
تدمد:1662-5153
DOI:10.3389/fnbeh.2018.00292