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Latest Olfactory system Stories

Odor Receptors Found In Lungs
2014-01-03 10:22:27

Brett Smith for redOrbit.com - Your Universe Online New research published in the American Journal of Respiratory Cell and Molecular Biology has revealed that odor receptors aren’t just found in the nose – they also line the lungs as well. However, instead of being used to detect the aroma of blueberry cobbler or a succulent roasting chicken, the odor receptors in the lungs trigger a response designed to protect the airways. “We forget,” said study author Yehuda Ben-Shahar,...

Genetics Play A Large Part In Olfaction
2013-12-14 05:33:05

April Flowers for redOrbit.com - Your Universe Online People react differently to the same smells. Something that smells wonderful to you could be offensive to your friend, but why this is so has been a mystery. The answer could lie in your genetic makeup, says a research team from Duke University. Their findings, published in the early online edition of Nature Neuroscience, reveal that a difference at the smallest level of DNA — one amino acid on one gene — determines whether or not...

Fear Odor Reaction
2013-12-13 08:45:51

redOrbit Staff & Wire Reports - Your Universe Online Neuroscientists at Rutgers University have discovered that fear reactions can occur in the olfactory system, even before the brain has had an opportunity to interpret and associate a particular odor with trouble. In a study published Thursday in the journal Science, John McGann, associate professor of behavioral and systems neuroscience at Rutgers and colleagues, report that neurons in the noses of laboratory animals reacted ...

2013-12-09 14:07:38

We each live in a unique odor world According to Gertrude Stein, "A rose is a rose is a rose," but new research indicates that might not be the case when it comes to the rose's scent. Researchers from the Monell Center and collaborating institutions have found that as much as 30 percent of the large array of human olfactory receptor differs between any two individuals. This substantial variation is in turn reflected by variability in how each person perceives odors. Humans have about...

Smell Processes In Our Brain Better Understood Through Locust Study
2013-11-26 09:53:56

April Flowers for redOrbit.com - Your Universe Online Environmental stimuli often trigger our sense of smell before we exhibit any other response. Smells trigger neurons in our brains that alert us to take action, but there are often more than one odor in our environments at any given time. Barani Raman, PhD, of the School of Engineering & Applied Science at Washington University in St. Louis, wanted to answer the question of how our brain processes multiple odors received...

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...


Word of the Day
abrosia
  • Wasting away as a result of abstinence from food.
The word 'abrosia' comes from a Greek roots meaning 'not' and 'eating'.