Quantcast

Latest Olfactory system Stories

039efe2945c5f1a3859efb9b9aa326e0
2010-02-04 08:34:03

Yale study may lead to better traps, repellents Yale University researchers have found more than two dozen scent receptors in malaria-transmitting mosquitoes that detect compounds in human sweat, a finding that may help scientists to develop new ways to combat a disease that kills 1 million people annually. These olfactory receptors in the mosquito Anopheles gambiae offer scientists potential new targets for repelling, confusing or attracting into traps the mosquitoes that spread a disease...

2009-12-28 13:26:20

The vomeronasal organ (VNO) is an odor detection system that mediates many pheromone-sensitive behaviors. Vomeronasal sensory neurons (VSNs), located in the VNO, are the initial site of interaction with odors and pheromones. How an individual VSN transduces chemical signals into electrical signals, however, has been a mystery. In the January 2010 issue of the Journal of General Physiology (www.jgp.org), researchers from the University of Vermont show that a Ca 2+ -activated chloride current...

2009-12-23 09:03:19

As anyone suffering through a head cold knows, food tastes wrong when the nose is clogged, an experience that leads many to conclude that the sense of taste operates normally only when the olfactory system is also in good working order. Evidence that the taste system influences olfactory perception, however, has been vanishingly rare"”until now. In a novel study this week in Nature Neuroscience, Brandeis researchers report just such an influence. Neuroscientist Don Katz and colleagues...

2009-10-19 17:27:30

Treatment with a glucocorticoid medication, either alone or in combination with Ginkgo biloba, appears to significantly improve the sense of smell in individuals with previous olfactory loss due to upper respiratory infections, according to a report in the October issue of Archives of Otolaryngology"“Head & Neck Surgery, one of the JAMA/Archives journals. Olfactory loss [loss of the sense of smell] is common and can be caused by head trauma, chronic sinonasal inflammation and viral...

2009-08-24 14:15:58

A U.S. study finds when the nose encounters two different scents simultaneously, the brain processes them separately and alternately through each nostril. Rice University scientists say their finding marks the first demonstration of perceptual rivalry in the human olfactory system. Our discovery opens up new avenues to explore the workings of the olfactory system and olfactory awareness, said Assistant Professor Denise Chen, who co-authored the research paper with graduate student Wen Zhou....

3c3bd1355a2e34185b3b28b836e51f631
2009-08-20 12:30:00

When the nose encounters two different scents simultaneously, the brain processes them separately through each nostril in an alternating fashion.This finding by researchers at Rice University in Houston is the first demonstration of "perceptual rivalry" in the olfactory system. The study was published online today by the journal Current Biology and will appear in the Sept. 29 print edition."Our discovery opens up new avenues to explore the workings of the olfactory system and olfactory...

2009-08-20 12:18:53

Your nostrils may seem to be a happy pair, working together to pick up scents. However, a study published online on August 20th in Current Biology, a Cell Press publication, reveals that there can actually be a kind of rivalry between the two."The two nostrils of a person typically have similar olfactory experience at any given time," said Denise Chen of Rice University. "But in a laboratory setting in which each nostril simultaneously receives a different smell, subjects experience an...

2009-05-05 13:26:23

U.S. scientists say they are the first to find a form of synaptic memory in the olfactory bulb -- the part of the brain that processes the sense of smell. Case Western Reserve University Associate Professor Ben Strowbridge and doctoral student Yuan Gao noted that during the 1970s, scientists discovered synapses could change their strength following brief periods of activity. That process, called long-term potentiation, is the leading candidate to explain how we store information about...

2009-05-04 07:27:45

Study in Nature Neuroscience uncovers possible basis of memories for different smells Ben W. Strowbridge, Ph.D, associate professor of Neuroscience and Physiology/Biophysics, and Yuan Gao, a Ph.D. student in the neurosciences program at Case Western Reserve University School of Medicine, are the first to discover a form of synaptic memory in the olfactory bulb, the part of the brain that processes the sense of smell. Their study, entitled "Long-term plasticity of excitatory inputs to granule...

fef36bf961df44f267c3dd1722f6702a1
2009-02-26 09:12:22

A simple model explains how the locust brain encodes turbulent plumes of odors In the real world, odors don't happen one puff at a time. Animals move through, and subsequently distort, plumes of odor molecules that constantly drift, changing direction as the wind disperses them. Now, by exploring how animals smell odors under naturalistic conditions, Rockefeller University scientist Maria Neimark Geffen and her colleagues reveal that the brain encodes these swirling, and complex patterns of...


Word of the Day
jument
  • A beast of burden; also, a beast in general.
'Jument' ultimately comes from the Latin 'jugum,' yoke.
Related