Articles tagged with Nose
Research from Kyushu University shows that odors can activate or suppress the response of olfactory sensory neurons in mice, leading to complex interactions and synergy when mixing odors. This study provides new insights into how our perception of odors is tuned from the moment they are detected in the nose.
Researchers found high levels of ACE2 receptors in sustentacular cells lining the nose, which may be a key entry point for SARS-CoV-2. This discovery could lead to targeted therapies and help explain why some people with COVID-19 lose their sense of smell.
Researchers found extremely high levels of ACE2 in the olfactory epithelium, a region responsible for detecting smells. This area is thought to be where COVID-19 gains entry into the body, explaining why some patients lose their sense of smell without other symptoms.
Researchers found that making masks and PPE with hydrophilic surfaces can reduce the drying time of droplets, cutting COVID-19 infection risk in half. A superhydrophobic surface requires more extreme modification to achieve optimal results.
Researchers have decoded the brain's smell-processing center, identifying a code for converting sensory information into perception. By manipulating nerve signaling, they found changes in glomeruli activation led to significant drops in odor recognition accuracy, with timing and order crucial for correct detection.
A study published in Cell Reports suggests that lactobacilli have a niche in the human nose and may play a role in preventing chronic nasal and sinus inflammation. Researchers developed a proof-of-concept nasal spray that delivered lactobacillus to the nose, colonizing healthy volunteers' upper respiratory tracts without adverse effects.
Researchers found anosmia without nasal obstruction highly predictive of COVID-19. The study suggests that the nose's role in COVID-19 is crucial, as the virus produces mucus containing it in the nasal lining.
Researchers at Columbia University used 3D imaging to study how the nose detects and processes different odors, revealing a complex code that is shaped by interactions within the nose. The study challenges traditional views on how the brain identifies individual components of mixed scents.
Researchers at the University of Huddersfield urge caution on wearing face masks, warning of potential skin damage through sweating and friction. Experts recommend keeping skin clean, well-hydrated, and moisturized to prevent pressure ulcers and infections.
The distinctive scent of soft pretzels is attributed to two key odorants: 4-hydroxy-2,5-dimethyl-3(2H)-furanone and 2-acetyl-1-pyrroline. These compounds contribute to the caramel-like and roasty popcorn-like smells of pretzels.
A study found that elephants can distinguish between quantities of food using their sense of smell, improving performance with quantity differences and degrading with ratio increases. This discovery may aid conservation efforts in regions where elephant habitats overlap with human settlements.
Researchers from the University of Bradford have developed a facial recognition system that can accurately identify individuals even when only half or three-quarters of their face is visible. The study found that the bottom half of the face, eyes, and nose were most useful for recognition.
Scientists have developed a model that explains how the nose adapts to smells by efficiently coding patterns across receptor types, which could aid research into age-related declines in sense of smell. The study's findings contribute to understanding how the mammalian nose senses and processes smells.
Physicians at Massachusetts Eye and Ear successfully induced a sense of smell in human subjects by stimulating nerves in the olfactory bulb. The breakthrough opens doors for developing implant technology to restore smell in those who have lost it, with potential applications in treating anosmia.
Researchers at Duke University have created a prototype of an artificial 'robot nose' device that uses living mouse cells to detect target odors, including cocaine and explosives. The device aims to mimic the human sense of smell and potentially replace trained dogs in security applications.
A new study published in Frontiers in Behavioral Neuroscience confirms the potent relaxing effects of lavender and its active compound linalool. The research suggests that the scent of linalool must be smelled, not absorbed, to exert its calming effects.
A recent study published in JNeurosci found that nose breathing enhances memory consolidation. Researchers compared the effects of nose and mouth breathing during a one-hour consolidation period after participants were exposed to various odors. Nose breathers showed increased odor recognition, suggesting that nose breathing may facilit...
A new study reveals that acidic oceans impact fish ability to detect odors, affecting their food, habitat and predator avoidance
Researchers used computer-based methods to compare the physiological behavior of Neanderthals to today's humans, finding that their noses were able to transport twice as much air to the lungs than modern humans. This unique feature allowed Neanderthals to thrive in Ice Age environments and power their more strenuous lifestyle.
Researchers have developed graphene-based nanoscrolls with a large surface area, stability at high temperatures and durability. The material mimics the capillary structure in a dog's nose to detect odors at extremely low concentrations.
Researchers have identified 15 new genes that play a crucial role in shaping our facial features. The discovery was made using a novel approach that analyzed DNA data from large databases of faces. The findings could lead to breakthroughs in forensic analysis and reconstructive surgery, enabling doctors to use DNA to recreate lost faces.
Researchers found that precise timing patterns of brain activity distinguish between airflow-driven mechanical signals and those generated by odors. This discovery demonstrates the neural code underlying olfaction, revealing how neurons differentiate between air-flow information and odor information.
A new bioelectronic 'nose' has been developed to detect food spoilage by sensing the presence of cadaverine, a compound responsible for the stench of rotting bodies. The detector, which uses nanodiscs and carbon nanotube transistors, is selective and sensitive for cadaverine at low levels, enabling early detection of food spoilage.
Researchers from Aarhus University create convincing model to predict and quantify odorants in the atmosphere, reducing nuisance and improving odor abatement solutions. The technique uses precise measurements of odorant content for on-site assessments, offering a more accurate alternative to human olfactory evaluations.
Researchers at UT Dallas develop an affordable electronic nose using CMOS integrated circuits technology, allowing for breath analysis in various health diagnoses. The device can detect low levels of chemicals present in human breath with high specificity and sensitivity.
A study found that people's ability to smell food aromas decreases with age, with 23% of participants having trouble detecting certain smells. In contrast, tastes are generally better detected, with only 3% experiencing difficulty.
A bioelectronic nose that mimics the human nose can detect traces of bacteria in water by smelling it, without complex equipment. The sensor is sensitive to low levels of contamination, making it more useful than existing methods.
Researchers at the University of Manchester and University of Bari have created a biosensor that can differentiate between mirror image smells. The system uses odorant binding proteins to detect unique chemical changes, approaching human nose detection limits.
Researchers at University of Sussex have found that fruit flies can identify odours from illicit drugs and explosive substances as accurately as wine, a natural attractant. The study brings scientists closer to developing electronic noses (e-noses) that closely replicate the sensitive olfactory sense of animals.
Researchers discovered preserved nasal turbinates in pachycephalosaur fossils, which improved airflow to the olfactory region, enhancing smell and cooling the brain. The study suggests that turbinates played a critical role in directing air to the olfactory region while also cooling the brain.
Researchers from Minzu University of China conducted geometric morphometric analysis on the sides faces of Tu and Zang ethnic groups, revealing distinct variations and common features. The study aimed to contribute to research on Chinese facial profile characteristics and variations.
Researchers have found that humans are capable of discriminating between an vast number of complex odors, with estimates suggesting at least 1 trillion possible scents. This new understanding challenges the long-held assumption that humans can only detect around 10,000 different smells.
A University of Iowa study found that men's noses are about 10 percent larger than female noses, on average, in populations of European descent. The size difference is attributed to the sexes' different builds and energy demands.
Researchers found that individuals who look at the tip of the nose or mouth can identify faces with equal accuracy as those who gaze below the eyes. The study sheds light on the complexities of face recognition, suggesting that people develop distinct optimal strategies to maximize identification accuracy.
A team of engineers from Sweden and Spain has developed an electronic nose with 32 sensors that can identify the distinct odors of pears and apples. The device uses metal oxide semiconductors to detect volatile compounds and processes data through classification algorithms.
Researchers discovered that maxillary sinuses change size to accommodate different climates, affecting nasal cavity shape and function. The study found a significant correlation between nose size and sinus volume in both African and European populations.
Researchers found that animals can adjust their sniffs to target specific odors in complex blends. The study showed that rats learned to detect highly absorbent odors more quickly than less absorbent ones, highlighting the importance of physical properties and sniffing techniques in olfaction.
Scientists outline how humans use nose and tongue to recognize food flavors, suggesting a way to teach people to like vegetables. The study reveals the brain integrates taste and smell sensations into a single flavor perception, potentially leading to improved diets.
Researchers found that faces are recognized more by their features than the entire face, contradicting the long-held belief in holistic processing. This study may help understand rare facial recognition disorders.
Researchers found that people's performance in recognizing a whole face is no better than their performance with individual features shown alone. The optimal Bayesian integrator model predicts this result, suggesting that relationships among facial features do not enhance information processing, contradicting the 'holistic' theory.
Researchers found that Malaysian Chinese use a unique mixed strategy to recognize faces, focusing on the eyes and nose more than the mouth, which proved advantageous for accurate recognition of Chinese and Caucasian faces.
A team of researchers at RUB discovered how the human nose distinguishes between similar smells by analyzing the 3D structure of olfactory receptors and hydrogen bridge patterns. They found a specific pattern of chemical bonds that account for the specificity of olfactory sensors.
A new study by Beijing Normal University cognitive psychologist Jia Liu and colleagues found that holistic processing is critical to face recognition. Individuals who perform well in tasks measuring holistic processing, such as the composite-face effect and whole-part effect, also excel at recognizing faces.
Researchers create computerized caricatures of idealized faces for Labour and Conservative MPs based on participants' perceptions. The study finds that the public's perception of an MP's face influences their political affiliation
Researchers evaluated virtual surgery performed on three-dimensional nasal airway models to predict post-surgical biophysical parameters. The results demonstrate promising potential for personalized nasal surgery using computer simulation techniques.
Researchers found that severe asthma affects 2% of the population and is closely related to chronic rhinosinusitis and nasal blockage. Individuals with multiple asthma symptoms are likely to have a more severe form of asthma, increasing the risk of attacks and negatively impacting quality of life.
A preservative-free, acidified nasal spray was found to be safe and effective at maintaining sterility in a small-scale study. The researchers evaluated the spray's impact on symptoms and microbial growth, finding no significant differences between the preservative-free and preservative-containing options.
Two new species of horned dinosaurs, Utahceratops gettyi and Kosmoceratops richardsoni, have been found in Grand Staircase-Escalante National Monument in southern Utah. The discovery provides insight into the biogenographic provinciality of Western North American dinosaur communities.
Patients seeking revision rhinoplasty often cite tip asymmetry, difficulty breathing, and crooked middle thirds as concerns. The discrepancy between patient and surgeon findings highlights the need for improved communication about nasal aesthetics.
Endoscopic sinus surgery rates increased by 20% among Medicare beneficiaries from 1998 to 2006, while open sinus surgery rates declined 40%. This trend suggests a shift towards minimally invasive procedures for managing chronic rhinosinusitis in the elderly population.
Researchers found that bees can learn to recognize the arrangement of human facial features on a face, but not individual humans. The insects use this strategy to distinguish between face-like and non-face patterns.
A study by Matthias S. Keil found that the brain extracts key information for facial identification primarily from the eyes, while the mouth and nose are secondary. The analysis suggests that faces are responsible for the brain's resolution preference, with a optimum resolution of around 30x30 pixels.
Women outperform men in detecting body odors, particularly those from the opposite sex. The study suggests that human sweat conveys information of particular importance to females, explaining why it is challenging to block women's perception of sweat odors.
UC San Diego computer scientists found that people first fixate on the left of the center of the nose and then the center of the nose to determine if a face is familiar. Looking at two spots, such as the nose and eye, does not improve recognition, but allows for better performance. Understanding how humans recognize faces may help crea...
Researchers studied how our brains process faces and found that looking at the nose is crucial for face recognition. The study showed that making two fixations, rather than one, leads to better performance in recognizing faces.
Four recipients of the ASPS Patients of Courage award have undergone extensive reconstructive plastic surgeries to restore their appearance. Erin Williams, Rachel Cooney, Missy Fish, and Sgt. Robert Bartlett use their experiences to help others struggling with life's obstacles.
Researchers at MIT have made a breakthrough in understanding the molecular basis of smell by mass-producing olfactory receptors. This advance could lead to the development of artificial noses for various settings, including medicine and industry. The innovation involves isolating and purifying protein structures using a novel method.
Researchers at UC Davis have discovered a low-cost, easy-to-prepare attractant that lures blood-fed mosquitoes without causing human discomfort. The synthetic mixture of trimethylamine and nonanal is equivalent to current attractants but odorless to humans.
Researchers found that fruit flies with a normal sense of smell had a survival advantage over odor-blind ones in experiments. In tests where food was scarce, the sense of smell proved crucial for finding food, leading to massive competition disadvantage for odor-blind flies.
Researchers at Northwestern University discovered that a single negative experience linked to an odor rapidly teaches us to identify and discriminate it from similar ones. The study found specific changes in brain regions enhancing perceptual sensitivity for smells with high biological relevance.