Articles tagged with Color
Two groups of jumping spiders, Habronattus and Maratus, have evolved rare color vision to see reds, yellows and oranges. They use different mechanisms, with Habronattus employing a red filter and Maratus relying on ultraviolet, blue and green sensitive cells.
Scientists have traced back 200 million years of eye evolution in turtles and crocodiles, discovering that their adaptations led to the loss of color vision. Turtles developed reduced color vision for freshwater habitats, while crocodiles adapted for dim light.
Researchers found that trichromat females have higher body mass indices and increased infant survival rates among their group members. This suggests a selective advantage for trichromatic females in providing nutrition and care to their offspring during times of food scarcity.
Scientists at KIT replicate nanostructures that produce vibrant colors independent of viewing angle, suitable for textile, packaging and cosmetic industries. The innovation could replace toxic pigments with sustainable alternatives.
A study by SISSA researchers found that our brains use color to guide food choices, with red foods being perceived as more calorie-dense. The visual system's trichromatic nature and evolutionary history support this preference.
Researchers found that birds in tropical climates are not more colorful than those in temperate climates. Instead, birds in harsh desert environments have evolved fancier colors to attract mates quickly. Birds in humid forest environments are darker in color overall.
A large-scale multicenter prospective study found that PCI on coronary artery lipid-rich plaque (LRP) detected by near infrared spectroscopy (NIRS) was not associated with subsequent major adverse cardiac events (MACE). The study suggests that NIRS-defined LRP is a safe and stable condition, contrary to previous autopsy-based studies.
Researchers have developed a new imaging technique using hyperspectral imaging to detect and characterize early cancerous changes in the gastrointestinal tract. The technique, which involves increasing color channels during endoscopy, has the potential to improve specificity of lesion identification.
New research finds that men are more open to purchasing environmental products if their masculinity is boosted through branding. The study used various approaches, including affirming masculinity and changing product associations, to demonstrate the effectiveness of rebranding green products as masculine.
A new company, Validere, has commercialized a sensing technology invented at Harvard University that can perform instant characterization of unknown liquids. The technology, called Watermark Ink (W-INK), exploits nanostructured materials to distinguish liquids by their surface tension.
Researchers developed an ultrasensitive chemical sensor using N-doped graphene and Raman spectroscopy, detecting trace amounts of molecules in solutions. The technique significantly enhances the Raman signal, allowing for detection of organic molecules at very low concentrations.
A new study found that people with high sensation-seeking personalities are more likely to engage in prank behavior when encountering the color red. This contradicts previous research suggesting that red leads to compliant behavior. The findings have implications for health campaigns, such as anti-smoking and safe sex initiatives.
Researchers at Brigham Young University studied the Emerald Ash Borer's eye structure to understand its color vision. They found that the beetle uses modified UV and green opsin genes to see in a way that other organisms cannot, allowing it to find mates and trees.
Researchers propose that cephalopods' U-shaped or dumbbell-shaped pupils can judge color by accentuating chromatic aberration, allowing them to focus on specific wavelengths. This unique visual system may enable camouflage and mimicry despite being 'colorblind'.
A study by Harvard University scientists suggests that cephalopods can perceive color through chromatic aberration, which allows them to detect different wavelengths of light. This mechanism enables the animals to create vivid camouflage abilities despite being limited to black and white vision.
Researchers at Brown University used a novel MRI technique to induce people to perceive colors that weren't really there, targeting early visual areas of the brain. The study showed that associations were learned strongly enough to persist for up to five months.
Researchers Rumiati and Foroni review how food is represented in the brain, exploring theories on sensory-functional and domain-specific categorization. They find that the 'foodstuff' category can help disambiguate among approaches and highlight the importance of variables like transformation and perceived calories.
Researchers found that lizard tails evolved differently based on the type of predator, with blue and UV light reflectance varying in communities with weasel or snake predators. A cryptic brown tail also emerged in island populations where birds are the primary predators.
Researchers develop Bend-Induced-Oscillatory-Shearing (BIOS) process to produce hundreds of meters of polymer opals on a roll-to-roll process, exhibiting chameleon-like color-shifting properties. The material has potential applications in smart clothing, building coatings, and banknote security.
Researchers found that bed bugs strongly preferred red and black colors, but avoided green and yellow due to their resemblance to brightly-lit areas. The study's findings may have implications for controlling bed bug populations by using color preference in traps.
Researchers have developed a new technology using CRISPR/Cas9 to label and track up to seven different genomic locations in live cells. This allows for real-time study of chromosome dynamics and gene expression, enabling better understanding of biological processes and health outcomes.
Researchers found a previously unknown type of neuron called J-RGCs that signal color to the brain by comparing signals from ultraviolet cones and rods. This discovery may help explain why humans perceive the color blue in dim light, as proposed by Van Gogh's Starry Night painting.
Researchers propose expectancy-based binding theory, which suggests that subjects remember features without necessarily attaching them to the target object. This contradicts traditional theories of object-based and feature-based encoding., Attention alone is not enough for accurate memory recall, according to the study.
Researchers found that Common Bluebottles have 15 photoreceptor classes, one for each wavelength of light, allowing them to distinguish millions of colors. This discovery reveals a unique system in butterfly vision, where four classes are used for routine color vision and eleven others detect specific stimuli.
Researchers tested a new way to treat colour problems in rubies by using microwaves. The study found that the microwave treatment led to visible changes in the gemstones' colour and structure.
A philosopher at Ruhr-University Bochum argues that our brain constructs complex contents immediately upon spotting an object, integrating typical features into a pattern. This process is evident in both individual and social perception, and has evolutionary significance.
A new study reveals that prelinguistic infants (5-7 months) exhibit brain activity in response to color categories, indicating an innate ability to categorize colors. This finding suggests that color perception is independent of language and can develop independently of linguistic acquisition.
Researchers develop aluminum nanostructure pixels using plasmon resonance to create vibrant colors across the entire visible spectrum. The new approach enables the production of high-resolution images and improved display performance.
A study by Rob Kuper found that people prefer landscapes with green colors and moderate complexity, especially during winter. Landscape designers can use evergreen trees, colorful berries, or plants that emerge early to create year-round visual appeal.
A study by University of Oregon and University of Cincinnati researchers found that colors like blue are associated with eco-friendliness, while green can have the opposite effect. The findings suggest that color in a brand's logo influences consumer judgments on environmental friendliness.
Researchers at Duke University have developed a technology that brings true color to infrared imaging systems, capturing specific wavelengths from the visible to the infrared spectrum. This allows advanced thermal imaging systems to be produced faster and cheaper, with higher sensitivity.
University of Utah engineers develop a new color filter that lets in three times more light than conventional filters, resulting in cleaner and more accurate pictures taken in lowlight. The filter can be used for smartphone cameras and industrial applications.
A new study reveals that 38% of state public health workers plan to leave the workforce by 2020, with those aged 25-40, racial and ethnic minorities, and those with fewer than 10 years of experience being most likely to exit. The study also highlights pay disparities between different groups in the public health sector.
Researchers at Toyohashi University of Technology found that facial color affects early stage of subliminal processing of facial expression. Facial bluish color increases N170 latency effect compared to natural color, indicating modulation of fearful expressions in the subliminal condition.
Researchers found that people worldwide, including nomadic hunter-gatherers in Tanzania, group colors into categories similar to those used by other cultures. This study suggests a combination of nature and nurture influences color naming, revealing cultural universals despite dramatic diversity within each culture.
Research suggests that feeling sadness can change how we perceive color, with participants who were induced to feel sad being less accurate in identifying colors on the blue-yellow axis than those who were led to feel amused or emotionally neutral.
Smoke from western fires mixes with atmospheric particles to obscure landmasses in eastern states, altering sunset colors. Residents notice increased reddish hues due to filtering of shorter wavelength light by smaller smoke particles.
A new study found that male anole lizards' glowing dewlaps make their visual signals easier to detect by females in shaded habitats. The translucent coloration allows light to pass through, increasing the signal-to-noise ratio and making the lizard's colors more conspicuous against a visually noisy background.
Researchers developed software to analyze colors and patterns as animals see them, useful for studying animal and plant signaling, camouflage, and predation. The software converts digital photos to animal vision, providing a user-friendly solution for scientists.
Researchers at the University of York found that our colour perception changes between seasons and is influenced by environmental factors. The study revealed that unique yellow remains stable across large populations despite individual differences in eye biology.
Researchers discovered that female stink bugs change the color of their eggs depending on the surrounding light environment. The darker-colored eggs, which are not darkened by melanin but a previously unknown pigment, offer protection against UV radiation when laid on top of leaves.
Researchers found that subtle visual distractions caused significant deviations from the intended path, contrary to intuition. The study's findings suggest a new phenomenon where the brain employs a suppression mechanism to tune out bigger distractions, but struggles with less apparent ones.
Researchers discovered human eyes can distinguish between thin films of different thickness by observing color differences, achieving precision beyond normal human vision. This ability rivals techniques like ellipsometry, which measure minute thicknesses, and could be used as a quick check by experienced technicians.
Researchers at Qualcomm MEMS Technologies developed a display technology that harnesses natural ambient light to create an unprecedented range of colors. The new design uses a mirror and absorbing layer to reflect more of the incoming light, enabling the full spectrum of visible light to be displayed.
Researchers found that people remember colors in combination of the actual color and assigned category label, with biases towards categories on borders. This discovery challenges current understanding of color memory.
A lightning strike sparked the Washington Fire near California Highways 4 and 89, fueled by strong erratic winds and severe drought conditions. The fire has grown to 8,000 acres since initial firefighting efforts began on June 19.
A Johns Hopkins University-led team discovered that people's brains tend to store colors as one of just a few basic hues, rather than specific shades. This bias affects memory accuracy, making it difficult for individuals to recall the exact color of an object.
Researchers discovered jumping spiders use 'spectral filtering' to see in three color channels, like humans. Their principal eyes detect red, green, and UV light, with a filter converting some green-sensitive cells to see red.
Scientists Bevil Conway and his team found impressive individual differences in color perception, with people falling into three main camps. The survey also revealed that perception differed by age and sex, suggesting the influence of light on visual systems. These findings shed light on how different brains interpret colors.
NASA's Aqua satellite captured false-color images of Siberia's massive wildfires using MODIS instrument. The false color image shows the extent of the burn scars, while the natural-color image highlights actively burning areas outlined in red.
The researchers found that all test subjects perceived similar color shades with varying lightness but not actual colors. The perception of daylight locus is influenced by the position of the sun, causing variations in lighting conditions.
A study by Durham University found that men wearing red are perceived as more aggressive and dominant than those in blue or grey. The results suggest that the colour red is a warning signal in nature and may influence social perceptions of dominance and aggression.
A recent UCI study found the brain adapts quickly to vision loss in low-light conditions, contradicting earlier research. This discovery opens the door to novel treatments and rehabilitation techniques that could help restore vision.
Research reveals color has a major impact on how our body clock measures time of day, outperforming brightness as a reliable method. The study found that changes in light color between blue and yellow are more sensitive to the body clock than changes in brightness.
Researchers tested Mike May, who regained sight at 49, and found he could see colors and motion but struggled with complex visual processing. The study provides valuable information on how vision develops and which tasks are most vulnerable to sight deprivation.
Researchers created a flexible, thin material that can change color by flexing it, offering possibilities for new display technologies and sensors. The material uses 'structural color' to reflect specific wavelengths of light, reflecting up to 83% of incoming light.
A study at Ohio State University found that color images lead to a greater focus on small product details, while black-and-white images aid in focusing on key features. This discovery suggests that marketers can strategically use color or its absence to alter consumer perceptions of products.
Researchers at Northwestern University developed a technique to transform silver into any color of the rainbow using a 'sandwich-like' structure. By adjusting the glass thickness, different colors can be produced. The filter also acts as an absorber for specific wavelengths, making it suitable for optoelectric devices.
Electrochromic polymers offer a broad range of colors, including four shades of brown, for use in sunglasses, window tinting, and other applications. The materials can be easily switched on and off using low-voltage electrical current.
Research found that gliding lizards in Borneo mimic the colours of falling leaves to camouflage, using extendable gliding membranes. The study suggests that populations have evolved different coloured membranes to match their habitats, allowing them to blend in with their surroundings.