Current Odors News and Events

Current Odors News and Events, Odors News Articles.
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Is odor the secret to bats' sex appeal?
A literature review revealed that odor-producing glands and tissues in bats may play a prominent role in mating behavior (2021-02-18)

Beetles reveal how to hide the body
A corpse is a home to the burying beetle, and UConn researchers are learning how this specialist critter keeps its home free of unwanted visitors. (2021-01-20)

The meat of the matter: Environmental dissemination of beef cattle agrochemicals
A recent Point of Reference article, ''The meat of the matter: Environmental dissemination of beef cattle agrochemicals,'' published in Environmental Toxicology and Chemistry, points at synthetic chemical cocktails being emitted from cattle feed yards into the environment and how they can impact our ecosystem and our health. (2021-01-13)

How does your computer smell?
A keen sense of smell is a powerful ability shared by many organisms. However, it has proven difficult to replicate by artificial means. Researchers combined biological and engineered elements to create what is known as a biohybrid component. Their volatile organic compound sensor can effectively detect odors in gaseous form. They hope to refine the concept for use in medical diagnosis and the detection of hazardous materials. (2021-01-13)

Male bats with high testosterone levels have large forearm crusts when females are fertile
Mammalian odors are frequently sexually dimorphic, with males often exhibiting a stronger, or otherwise distinct, odor relative to females, which can be especially useful for nocturnal species with reduced use of vision. Some male bats exhibit intense odors to attract females and reproduce, presumably as a consequence of a high concentration of testosterone. (2020-12-15)

K9 chemistry: A safer way to train detection dogs
Trained dogs are better at detecting explosives and narcotics than any technological device scientists have invented. However, training dogs to detect hazardous substances can be inconvenient for the trainer and dangerous for the dog. NIST scientists are working to solve this problem with a material that can catch odors and safely release them over time. (2020-12-03)

A measure of smell
Meeting a 100-year-old challenge could lead the way to digital aromas (2020-11-19)

Western diet impairs odor-related learning and olfactory memory in mice
Problems with the sense of smell appear to be an early indicator of cognitive decline in people with type 2 diabetes. However, it's unknown whether factors such as diet and obesity play a role in who develops these symptoms. Now, researchers reporting in ACS Chemical Neuroscience found that mice fed a moderate-fat, high-sugar chow (simulating a Western diet) showed a faster decline in their ability to learn and remember new odors. (2020-11-04)

Odors as navigational cues for pigeons
Volatile organic compounds identified that can be used for olfactory navigation by homing pigeons. (2020-10-19)

There's a gene for detecting that fishy smell, olfactory GWAS shows
Some people carry a mutation in a particular gene that makes the smell of fish less intense, reports a paper publishing October 8 in the journal Current Biology. The study, which is the largest genome-wide association study (GWAS) of olfactory genes in humans involving a sniff test and looked at over 9,000 people from Iceland, also shows that people vary in their ability to discern the smell of licorice and cinnamon. (2020-10-08)

Study finds odor-sensing neuron regeneration process is adaptive
Results show that diminished odor stimulation reduces the number of newly-generated neurons that express particular odorant receptors, indicating a selective alteration in the neurogenesis of these neuron subtypes. (2020-10-06)

Study looks at encoding the odor of cigarette smoke
A recent publication in the Journal of Neuroscience by a group of researchers at the University of Kentucky looks at Encoding the Odor of Cigarette Smoke. Tim McClintock, a physiology professor at UK, says their work lays a foundation for two things. (2020-09-30)

Repeated pregnancy loss may be tied to the olfactory system
Understanding the connection could lead to a new search for the causes of unexplained spontaneous miscarriage (2020-09-29)

Nose's response to odors more than just a simple sum of parts
Based on highly sensitive recordings of neuron activity in the noses of mice, researchers from Kyushu University have found that olfactory sensory neurons can exhibit suppression or enhancement of response when odors are mixed, overturning a long-standing view that the response is a simple sum with more complex processing only happening at later stages. (2020-09-18)

Scientists "scent train" honeybees to boost sunflowers' seed production
If you want a dog to hunt something down, it helps to let them sniff an item to pick up the scent. Now, researchers reporting in Current Biology on September 17 have found that scent training honeybees might work in a similar way--and that this approach could make bees more efficient in pollinating crops. The findings show that honeybees given food scented with sunflower odors led to a significant increase in sunflower crop production. (2020-09-17)

Diamondback moth uses plant defense substances as oviposition cues
Researchers showed that isothiocyanates produced by cruciferous plants to fend off pests serve as oviposition cues. The scientists identified two olfactory receptors whose sole function is to detect these defense substances and to guide female moths to the ideal sites to lay their eggs. They uncovered the molecular mechanism that explains why some insects that specialize in feeding on certain host plants are attracted by substances that are supposed to keep pests away. (2020-09-10)

International Symposium on Olfaction and Taste at Association for Chemoreception Sciences
Across 5 days in August (3rd-7th), scientists from around the world gathered virtually to present and discuss new information on the role of the chemical senses in disease, nutrition, and social interactions in humans and animals. (2020-09-08)

Air pollution renders flower odors unattractive to moths
Researchers from the Max Planck Institute for Chemical Ecology in Jena, Germany, and the University of Virginia, USA, showed that tobacco hawkmoths lost attraction to the scent of their preferred flowers when that scent had been altered by ozone. This oxidizing pollutant thus disturbs the chemical communication between a plant and its pollinator. However, when given the chance, hawkmoths quickly learn that an unpleasantly polluted scent may lead to nutritious nectar. (2020-09-04)

CU Anschutz researchers shed light on split-second decision making
A little understood region of the cerebellum plays a critical role in making split-second 'go-no go' decisions, according to a new study from researchers at the University of Colorado Anschutz Medical Campus. (2020-08-31)

Constructing odor objects in the brain
A research team at RIKEN in Japan found how odors can be generalized into categories by combining brain imaging and models of brain activity. They examined a region of the fly brain that plays a central role in forming olfactory memories and discovered clustered representations of mixtures and groups of odors that are conserved across individual flies. (2020-08-18)

How the brain senses smell
An Italian-American research conducted by researchers at the IIT-Istituto Italiano di Tecnologia (Italian Institute of Technology) in Rovereto (Italy) and Harvard University in Boston (Usa) explains for the first time the mechanisms used by our brain to recognize specific smells. Thanks to this result, researchers will be able to think about the realization of an artificial sense of smell, to be transferred to robots and other intelligent machines in the future. (2020-07-29)

Using artificial intelligence to smell the roses
A pair of researchers at the University of California, Riverside, has used machine learning to understand what a chemical smells like -- a research breakthrough with potential applications in the food flavor and fragrance industries. (2020-07-28)

Invasive hedgehogs and ferrets habituate to and categorize smells
A new study published in the Ecological Society of America's journal Ecological Applications examines how invasive mammalian predators both habituate to and generalize avian prey cues. (2020-07-15)

BU researchers design artificial genes to sense cellular responses to drugs
Researchers from Boston University School of Medicine (BUSM) have developed and implemented a new way to better understand how human cells communicate with each other, how this communication. (2020-07-06)

Sniffing out smell
Neuroscientists describe for the first time how relationships between different odors are encoded in the brain. The findings suggest a mechanism that may explain why individuals have common but highly personalized experiences with smell, and inform efforts better understand how the brain transforms information about odor chemistry into the perception of smell. (2020-07-02)

Optogenetic odors reveal the logic of olfactory perception
Using optogenetic control, researchers have created an electrical signature that is perceived as an odor in the brain's smell-processing center, the olfactory bulb, even though the odor does not exist. (2020-06-18)

Microglia in the olfactory bulb have a nose for protecting the brain from infection
Researchers at NINDS have identified a specific, front-line defense that limits the infection to the olfactory bulb and protects the neurons of the olfactory bulb from damage due to the infection. Although the location of nasal neurons and their exposure to the outside environment make them an easy target for infection by airborne viruses, viral respiratory infections rarely make their way from the olfactory bulb to the rest of the brain, where they could cause potentially fatal encephalitis. (2020-06-05)

Weizmann Institute scientists develop 'sniff test' that predicts recovery of consciousness in brain
If an unconscious person responds to smell through a slight change in their nasal airflow pattern -- they are likely to regain consciousness. This is the conclusion from a new study conducted by Weizmann Institute scientists and colleagues at the Loewenstein Rehabilitation Hospital, Israel. (2020-05-21)

How to tune out common odors and focus on important ones
Quantitative biologists at CSHL have figured out how a fly brain learns to ignore overwhelmingly prevalent, mundane odors to focus on more important ones. It's an important step towards understanding how our senses work and how computer sensing could work better. (2020-05-11)

Male ring-tail lemurs exude fruity-smelling perfume from their wrists to attract mates
Humans aren't the only primates who like smelling nice for their dates. In the journal Current Biology on April 16, scientists report that male ring-tailed lemurs (Lemur catta) become more attractive to females by secreting a fruity and floral aroma from their wrists. Using detailed chemical analysis, the researchers identified three compounds responsible for this sweet scent, marking the first time that pheromones have been identified in a primate. (2020-04-16)

Odor experts uncover the smelly chemistry of lemur love
Three chemicals with floral, fruity scents are likely essential ingredients in the natural cologne male ring-tailed lemurs use to attract a mate. Experts in odor communication say these chemicals could be the first fully identified sex pheromones in primates. (2020-04-16)

Scents regulate fat storage without affecting eating behavior
Researchers discovered that, in the lab worm C. elegans, certain scents dynamically regulate fat mobilization by interacting with specific olfactory neurons through specific receptors. (2020-04-16)

NIH BRAIN Initiative tool helps researchers watch neural activity in 3D
Our ability to study networks within the nervous system has been limited by the tools available to observe large volumes of cells at once. An ultra-fast, 3D imaging technique called SCAPE microscopy, developed through the National Institutes of Health (NIH)'s Brain Research through Advancing Innovative Technologies (BRAIN) Initiative, allows a greater volume of tissue to be viewed in a way that is much less damaging to delicate networks of living cells. (2020-04-13)

Making sense of scents: 3D videos reveal how the nose detects odor combinations
Every moment of the day we are surrounded by smells. Odors can bring back memories, or quickly warn us that food has gone bad. But how does our brain identify so many different odors? And how easily can we untangle the ingredients of a mixture of odors? In a new study in mice published today in Science, Columbia scientists have taken an important step toward answering these questions, and the secret lies inside the nose. (2020-04-09)

Reduced off-odor of plastic recyclates via separate collection of packaging waste
Plastic recyclates produced from waste packaging have to meet high sensory requirements in order to be used for new products. Plastic recyclates often have off-odors, some of which have not hitherto been identified. The Fraunhofer Institute for Process Engineering and Packaging IVV has analyzed the sensory properties of post-consumer shopping bags made of low density polyethylene (LDPE) and originating from different collection systems. (2020-03-31)

Researchers sniff out AI breakthroughs in mammal brains
New Cornell research explains some of these functions through a computer algorithm inspired by the mammalian olfactory system. The algorithm both sheds light on how the brain works and, applied to a computer chip, rapidly and reliably learns patterns better than existing machine learning models. (2020-03-16)

Sea turtles have a deadly attraction to stinky plastic
Sea turtles around the world are threatened by marine plastic debris, mostly through ingestion and entanglement. Now, researchers reporting in the journal Current Biology on March 9 have new evidence to explain why all that plastic is so dangerous for the turtles: they mistake the scent of stinky plastic for food. (2020-03-09)

Why do sea turtles eat ocean plastics? New research points to smell
The findings are the first demonstration that the smell of ocean plastics causes animals to eat them. (2020-03-09)

Mother nose best: Child body odor provides olfactory clues to developmental stages
A child's body odor can help a mother fall in love with her child -- and signal when it's time for the mother-child bond to grow up. New research published in the journal Frontiers in Psychology now suggests that a mom's olfactory sense may be capable of detecting her child's developmental stage. The findings could have long-term implications for treatment of conditions like postpartum bonding disorders. (2020-03-04)

How does the brain put decisions in context? Study finds unexpected brain region at work
When crossing the street, which way do you first turn your head to check for oncoming traffic? This decision depends on the context of where you are. A group of scientists at Columbia's Zuckerman Institute has been studying how animals use context when making decisions. And now, their latest findings have tied this ability to an unexpected brain region in mice, previously thought to primarily guide and plan movement. (2020-02-27)

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