Articles tagged with Color
The lizard's parietal eye photoreceptors contain two pigments, allowing it to respond to blue and green light in the same cell. This unique mechanism may have been an economical way to detect changes in sunlight during dawn and dusk. The study proposes a 'missing link' between the light-sensing apparatus of lower animals and humans.
A recent study reveals that a single gene, spineless, controls the development of both the fruit fly's antenna and its color vision. The research, led by Claude Desplan and Ian Duncan, uses Drosophila fruit flies to demonstrate how this gene regulates the retina's structure and function.
Researchers found that marsupials have a version of trichromatic color vision distinct from primates, with sensitivity to UV wavelengths. The study provides new insights into the evolution of mammalian color vision.
Researchers identified a transcription factor gene called spineless as the key regulator for establishing the retinal mosaic in fruit flies. In this study, the researchers found that receptor cells made their 'decision' autonomously without the influence of nearby cells.
Researchers found that language affects perception in the right half of the visual field, but not in the left. The study suggests that linguistic differences can sharpen visual distinctions in the right visual field.
Researchers found that deuteranomalous individuals can distinguish between colors inaccessible to normal color vision, suggesting a unique color dimension. This discovery challenges the long-held assumption that colorblindness is solely related to reduced color perception.
A new UCL study reveals that bees can recognize flowers under different global lights by segmenting scenes into regions of illumination and finding the correct flowers within each region. This strategy suggests that bees use color relationships between objects in a scene to resolve stimulus ambiguity, a challenge also faced by humans.
Researchers precisely imaged and counted color-receptive cones in a living human eye for the first time, revealing that color perception goes beyond hardware limitations. The brain's normalization mechanism balances colors despite variations in the visual system.
Researchers discovered that closely related cichlid species use different subsets of visual pigments to shape their color vision. Each species primarily expresses three cone pigment genes encoded by its genome, allowing for unique adaptations to their environments and ecological niches.
A program recruiting and supporting family therapists of color helps increase diversity among students and faculty. The initiative incorporates mentorships, community partnerships, and long-term institutional commitment to foster a more diverse and inclusive field.
Researchers found that grapheme-color synesthetes see reported colors and experience activation in color-selective brain regions. Stronger color perception was linked to better behavioral performance.
The study found that synesthetes' colors help them distinguish shapes, but are less effective than real colors. The research suggests that synesthetic colors lead to improved behavioral performance similar to real colors.
Researchers use microspectrometry to map the unique color patterns of individual gems, revealing differences even among same-type stones. This technique could provide valuable information for gemstone authentication and potential recovery of stolen stones.
Scientists have developed a range of new fluorescent proteins with unique colors, allowing them to track the effects of multiple genetic alterations in a single cell. These monomeric proteins retain fluorescent properties while being less toxic than their multimeric counterparts, enabling precise cellular analysis.
A study by Dr. Jamie Ward reveals that synaesthesia is not about detecting hidden emotions, but rather a brain-created response to stimuli. Researchers found that people with the condition associate words and names with specific colours, including pink for positive emotions and brown for negative ones.
Early visual experience is crucial for normal development of color constancy in humans and monkeys. The study shows that baby monkeys raised in monochromatic environments had severe deficits in color constancy, highlighting the importance of early exposure to a diverse range of colors.
Researchers analyzed Cassini's Visual and Infrared Mapping Spectrometer data, revealing water ice, minerals, and unidentifiable materials on Phoebe's surface. This suggests a possible connection between Phoebe and comets, supporting the idea that it may be similar to Kuiper Belt Objects.
Researchers found that visual perception can stabilize in ambiguous conditions, independent of the memory of object identity. The mechanism underlying this stabilization is linked to the removal of local adaptation and depends on the stimulus location.
A study by Brian Wansink found that adults offered six colored flavors of jellybeans ate 69% more than when the colors were each placed in separate bowls. The perception of variety stimulates how much people consume. Consumers can curb overeating by avoiding multiple bowls of the same food and arranging foods into organized patterns.
NIST's new portable 'rainbow' source enables precise color calibration across the entire visible light spectrum, addressing uncertainty in instruments measuring ocean and atmospheric properties. The highly portable source has been ordered by NOAA to reduce uncertainties in satellite calibrations.
A recent study on sensory interaction found that the brain amplifies information from sight and smell when they fit together well, leading to a stronger perception of odors. Additionally, research on blind individuals revealed that their sense of touch is not inferior to sighted people's, contrary to popular belief.
A study by Dr. Emilie Phillips Smith found that family, school, and community factors play a significant role in shaping children's racial-ethnic attitudes and academic achievement. The research used interviews and questionnaires to assess the attitudes of African American child and parent pairs in South Carolina.
Research by University of Michigan biologist Jianzhi Zhang found that humans lost pheromone signals after a gene duplication event around 23 million years ago. This duplication allowed for the development of color vision, making pheromones unnecessary as a channel for sexual signaling.
Researchers explore how artists like Monet and da Vinci use light, color, and vision to create illusions of space and color. Neuroscientist Margaret Livingstone explains that luminance and flat-reflecting mediums influence visual perception, making objects appear differently in various situations.
A Penn State cartographer emphasizes the importance of careful color choices in visual representation to reveal relationships and patterns in complex data. An online web tool, ColorBrewer, provides pre-designed color palettes that cater to color blindness and are suitable for various mediums.
Synaesthetes have an extra layer of information that helps with rote memory and creativity. The University of Melbourne team used Magnetic Resonance Imaging to analyze brain images of synaesthetes, revealing the secrets of how their brains function.
A study at Vanderbilt University found that an adult male with synesthesia consistently matched colors to words and numbers, even when the letters or numbers were presented separately. The researchers also found that his synesthetic colors acted like real colors in certain tests.
Researchers at the University of Delaware have developed a portable detection platform that can detect chemical and biological weapons using infrared spectroscopy. The device, about the size of a large shoebox, can identify even small amounts of agents in solid, liquid or vapor phases.
The Utrecht spectrograph uses a prism to disperse light, resulting in faster pictures with reduced light loss. Researchers used it to study proteins from muscle tissue and discovered unexpected chemical reactions triggered by illumination.
A new DNA test developed by researchers at Indiana University uses quantum dots to quickly and accurately analyze large numbers of genes. The test can identify up to 40,000 different genetic codes in just 10 minutes, making it a game-changer for medical diagnosis and research.
Researchers Beau Lotto and Dale Purves suggest that the visual system perceives color based on reflectances and illuminances of past stimuli. In experiments, subjects adjusted colors to match perceived color differences, showing an increased difference when contexts suggested different objects or illumination.
A study by Ohio State University scholars found that 27% of Web pages listed correct answers to library reference questions, while 9% contained incorrect answers. The researchers suggest evaluating source credibility and supplementing with other resources for more accurate information.
Scientists have found evidence that trichromatic or full color vision originated in prosimians, a group of lemurs, Bush Babies and pottos, rather than in higher primates. The new research pushes the origin of primate color vision back roughly 20 million years to about 55 million years ago.
Researchers at USC and UC Irvine have discovered two independent brain pathways that process visual information, highlighting the importance of integrating color and motion. The 'Third Order' system is found to be critical for detecting pure color motion, allowing humans to perceive movement in 'isoluminant' images.
Gallium Nitride (GaN) systems enable smaller, brighter, longer-lasting light-emitting diodes with increased data storage-density. The Navy is interested in these blue-light emitters for microwave amplifiers and highly efficient white-light emitters.
Cornell University psychologist Romi Nijhawan's experiment shows that the brain can decompose yellow into its constituent red and green based on motion of the stimulus. Human retinas cannot sense motion on their own, but the brain uses a process called motion extrapolation to correct for this delay.