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Last updated on April 24, 2014 at 1:21 EDT

Latest Olfactory system Stories

2013-10-21 13:38:31

Think of the smell of an orange, a lemon, and a grapefruit. Each has strong acidic notes mixed with sweetness. And yet each fresh, bright scent is distinguishable from its relatives. These fruits smell similar because they share many chemical compounds. How, then does the brain tell them apart? How does the brain remember a complex and often overlapping chemical signature as a particular scent? Researchers at Cold Spring Harbor Laboratory (CSHL) are using the fruit fly to discover how the...

2013-10-03 09:03:25

Juvenile mice secrete a protective pheromone in their tears, blocking adult mating Nocturnal animals need their noses to stay alive. Mice, among others, depend on their impressive olfactory powers to sniff out food or avoid danger in the dark. Hard-wired to flee a predator or fight a mating rival in response to a whiff of urine, mice use a streamlined system that sends the sensory cue to neural centers in the brain that need only a few synapses to rapidly initiate the instinctive...

2013-07-05 11:04:44

Fish fail to detect danger in copper-polluted water. A new study, to be presented at the meeting of the Society for Experimental Biology on the 5th of July, shows that fish cannot smell a danger odor signal emitted by other fish in waters contaminated with copper. Research conducted by Dr Bill Dew at the University of Lethbridge in Canada looked for the first time at the effect of the metal contaminants nickel and copper on specific fish olfactory sensory neurons, and how these affect the...

2013-06-19 14:33:47

It takes as few as 25 brain cells for a fly to characterize and distinguish among odors Behind the common expression "you can't compare apples to oranges" lies a fundamental question of neuroscience: How does the brain recognize that apples and oranges are different? A group of neuroscientists at Cold Spring Harbor Laboratory (CSHL) has published new research that provides some answers. In the fruit fly, the ability to distinguish smells lies in a region of the brain called the mushroom...

Single Olfactory Gene Helps Mice Detect Predators
2013-04-30 08:47:01

Alan McStravick for redOrbit.com — Your Universe Online Dogs can hear sounds at higher frequencies. Bats can ℠see´ with sonar although their eyes are practically useless. And, apparently, the mouse can smell a predator´s urine from a mile away. Each of these traits has played an important role in the evolution of each animal. But what is especially amazing with regard to mice and their olfactory receptors is their ability to sense a threat may be determined by only...

2013-04-09 23:04:36

Following an article about new research claiming to discover that some internal organs may be able to smell and drink foods, Yumi Media releases a statement. Bohemia, NY (PRWEB) April 09, 2013 On April 9, Yumi Media, a food website devoted to delivering the latest and greatest in food news, recipes, and products to incorporate into your own healthy lifestyle, responds to an article published on Discovery News by Jennifer Viegas, which goes over how certain internal organs may be able to...

Origins Of Our Smell Cells Pinpointed By Scientists
2013-03-26 08:09:14

redOrbit Staff & Wire Reports - Your Universe Online Biologists at the California Institute of Technology (Caltech) have identified the origin of olfactory nerve cells, finding that neural-crest stem cells — multipotent, migratory cells unique to vertebrates that give rise to many structures in the body — play a key role in building olfactory sensory neurons in the nose. When human noses detect a scent, two types of sensory neurons are at work. These neurons are...

2013-03-20 10:31:54

Study highlights brain changes that may underlie transition from aggressive to parental behavior Sexually naïve male mice respond differently to the chemical signals emitted by newborn pups than males that have mated and lived with pregnant females, according to a study published March 20 in The Journal of Neuroscience. The findings may help scientists to better understand the changes that take place in the brains of some mammals during the transition into parenthood. Sex...

2013-03-18 15:54:40

Insect odorant receptors regulate their own sensitivity. Highly developed antennae containing different types of olfactory receptors allow insects to use minute amounts of odors for orientation towards resources like food, oviposition sites or mates. Scientists at the Max Planck Institute for Chemical Ecology in Jena, Germany, have now used mutant flies and for the first time provided experimental proof that the extremely sensitive olfactory system of fruit flies – they are able to...

Quantum Smell May Exist
2013-01-28 19:48:08

Brett Smith for redOrbit.com — Your Universe Online The majority of the scientific community has embraced the idea of different smells being based on the olfactory receptors´ ability to detect various shapes of odor molecules. However, a new study in the open access journal PLOS ONE has given credence to a less popular theory; that the sense of smell is based on the molecules´ different vibrations, not their shapes. The idea of a quantum, or vibration, basis for...