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Mostrando ítems 11-20 de 46
Chromaticity effects in microlensing by wormholes
(World Scientific, 2001-12)
We discuss the possibility that the stellar system Cyg OB2 No. 5 can be a gamma-ray source in the light of recent EGRET and radio data. This system is formed by an O7 Ia + Ofpe/WN9 contact binary. A third star, probably a ...
Color discrimination is affected by modulation of luminance noise in pseudoisochromatic stimuli
(Frontiers Research Foundation, 2016-07-06)
Pseudoisochromatic stimuli have been widely used to evaluate color discrimination and to identify color vision deficits. Luminance noise is one of the stimulus parameters used to ensure that subject´s response is due to ...
Discrimination between Myrciaria jaboticaba ('Sabará') and Myrciaria cauliflora ('Açú') fruit using CIE colour parameters and near-infrared spectroscopy
(2016-06-20)
The Myrtaceae family has many species and among them stands up the Myrciaria cauliflora (DC) Berg ('Açú') and Myrciaria jaboticaba (Vell) Berg ('Sabará') due to the quality of their fruit which are called jaboticabas. ...
Parturition Signaling by Visual Cues in Female Marmosets (Callithrix jacchus)
(Plos One, 2015-06-05)
New World monkeys have polymorphic color vision, in which all males and some females
are dichromats, while most females are trichromats. There is little consensus about which
selective pressures fashioned primate color ...
The subjective metric of remembered colors: A Fisher-information analysis of the geometry of human chromatic memory
(Public Library of Science, 2019-01)
In order to explore the metric structure of the space of remembered colors, a computer game was designed, where players with normal color vision had to store a color in memory, and later retrieve it by selecting the best ...
O efeito do ruído espacial de cor sobre a discriminação limiar de luminância: investigação básica e aplicada em populações expostas ao mercúrio
(Universidade Federal do ParáBrasilInstituto de Ciências BiológicasUFPAPrograma de Pós-Graduação em Neurociências e Biologia Celular, 2018)
Entropia conjunta de espaço e reqüência espacial estimada através da discriminação de estímulos espaciais com luminância e cromaticidade moduladas por funções de Gábor: implicações para o processamento paralelo de informação no sistema visual humano
(Universidade Federal do ParáBrasilInstituto de Ciências BiológicasUFPAPrograma de Pós-Graduação em Neurociências e Biologia Celular, 2014)
Mascaramento por ruído de luminância sobre a discriminação de cor e luminância
(Universidade Federal do ParáBrasilInstituto de Ciências BiológicasUFPAPrograma de Pós-Graduação em Neurociências e Biologia Celular, 2019)
Discriminação de cores em profissionais da área técnica de empresa de material fotográfico
(Conselho Brasileiro de Oftalmologia, 2007-12-01)
PURPOSE: The objective of this study was to evaluate chromatic discrimination in employees of a photographic laboratory. METHODS: A total of 47 professional employees of the technical area devoted to calibration and technical ...
Can red flowers be conspicuous to bees? Bombus dahlbomii and south american temperate forest flowers as a case in point
(COMPANY OF BIOLOGISTS LTD, 2010)
It has been argued that trichromatic bees with photoreceptor spectral sensitivity peaks in the ultraviolet (UV), blue and green areas of the spectrum are blind to long wavelengths (red to humans). South American temperate ...