Pattern forming mechanisms of color vision
Network Neuroscience, 2023 Abstract While our understanding of the way single neurons process chromatic stimuli in the early visual pathway has advanced significantly in recent years, we do not yet know how these cells interact to form stable representations of hue. Drawing on physiological studies, we offer a dynamical model of how the primary visual cortex tunes
Zily Burstein +3 more
openaire +4 more sources
Ionizing radiation and melanism in Chornobyl tree frogs
Evolutionary Applications, 2022 Human actions are altering ecosystems worldwide. Among human‐released pollutants, ionizing radiation arises as a rare but potentially devastating threat to natural systems.
Pablo Burraco, Germán Orizaola
doaj +1 more source
Effect of Reduction Annealing on the Coloration Mechanism of Yellow Sapphire with High Iron Content
Crystals, 2022 The color of yellow sapphire from Africa characterized by high iron content and low levels of other transition metal elements was changed from yellow to grayish-blue after high-temperature reduction annealing.
Xiao Wu +4 more
doaj +1 more source
Evidence for coloration plasticity in the yellow‐bellied toad, Bombina variegata
Ecology and Evolution, 2021 Phenotypic adaptation in terms of background color matching to the local habitat is an important mechanism for survival in prey species. Thus, intraspecific variation in cryptic coloration is expected among localities with dissimilar habitat features (e ...
Kathleen Preißler +2 more
doaj +1 more source
Relationship between the Coloration Mechanism and Gemological Properties of Purple Scapolite
Crystals, 2023 Purple scapolite is a precious gemstone. In this paper, we compared the crystal structure and spectral characteristics of purple scapolite before and after heat treatment with conventional gemological tests, EPMA, XRF, LA-ICP-MS, infrared spectroscopy ...
Yinghua Rao +3 more
doaj +1 more source
Extreme offspring ornamentation in American coots is favored by selection within families, not benefits to conspecific brood parasites [PDF]
, 2020 Offspring ornamentation typically occurs in taxa with parental care, suggesting that selection arising from social interactions between parents and offspring may underlie signal evolution.
Lyon, Bruce E., Shizuka, Daizaburo
core +3 more sources
New Insights into Coloration Mechanism in Violet-Red Pyrope-Almandine
Crystals, 2022 The most common type of garnet is pyrope-almandine, whose color varies from red to violet. In this study, 36 faceted gem-quality samples are used for electron microprobe, infrared spectrum, and UV-Visible spectrum test to find the coloration mechanism ...
Puyue Yang, Ying Guo
doaj +1 more source
Signaling in a polluted world: oxidative stress as an overlooked mechanism linking contaminants to animal communication [PDF]
, 2016 The capacity to communicate effectively with other individuals plays a critical role in the daily life of an individual and can have important fitness consequences.
Costantini, David, Marasco, Valeria
core +1 more source
Influence of oxygen pressure on the fs laserinduced oxidation of molybdenum thin films [PDF]
, 2018 We present a study of femtosecond (1028 nm, 230 fs, 54.7 MHz) laser processing on molybdenum (Mo) thin films. Irradiations were done under ambient air as well as pure oxygen (O2) at various gauge pressures (4, 8, 12 and 16 psi). Our results indicate that
Aguilar, G +5 more
core +1 more source
Opsin expression predicts male nuptial color in threespine stickleback. [PDF]
, 2018 Theoretical models of sexual selection suggest that male courtship signals can evolve through the build-up of genetic correlations between the male signal and female preference.
Bolnick, Daniel I +3 more
core +2 more sources