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Latest Olfactory system Stories

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2011-04-17 07:39:46

Scientists assemble genes involved in regulating olfaction in the antennae of a moth Insects have a highly sensitive sense of smell. Extremely low concentrations of odor molecules in the air are sufficient to be detected by receptor neurons on their antennae. Specific proteins, so-called receptor proteins, expressed in these neurons recognize the odors. The odor molecules bind to the receptors and produce chemical and electrical signals that are processed in the insect brain and eventually...

2011-04-07 12:53:16

NIH-funded scientists report findings on olfactory clues to Alzheimer's disease, the sweet taste of anticipation, and the impact of autoimmune diseases on taste during research meeting in St. Pete Beach, Fla. What: Scientists supported by the National Institute on Deafness and Other Communication Disorders (NIDCD), one of the National Institutes of Health, will be presenting their latest research findings at the 2011 Annual Meeting of the Association for Chemoreception Sciences (AChemS)....

2011-03-31 22:45:25

Biologists at UC San Diego have identified the molecular mechanisms triggered by starvation in fruit flies that enhance the nervous system's response to smell, allowing these insects and presumably vertebrates"”including humans"”to become more efficient and voracious foragers when hungry. Their discovery of the neural changes that control odor-driven food searches in flies, which they detail in a paper in the April 1 issue of the journal Cell, could provide a new way to...

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2011-03-27 10:54:38

'Can you hear me now?' Researchers detail how neurons decide how to transmit informationThere are billions of neurons in the brain and at any given time tens of thousands of these neurons might be trying to send signals to one another. Much like a person trying to be heard by his friend across a crowded room, neurons must figure out the best way to get their message heard above the din.Researchers from the Center for the Neural Basis of Cognition, a joint program between Carnegie Mellon...

2011-03-25 18:32:22

Revelation sheds light on our most ancient sense Researchers seeking to unravel the most ancient yet least understood of the five senses "“ smell "“ have discovered a previously unknown step in how odors are detected and processed by the brain. The four year study, focusing on how mice respond to odors, showed that smells are picked up by the olfactory bulb "“ the first stop on the way to the brain "“ then sent to the olfactory cortex for further analysis. But...

2011-02-06 08:35:43

Mice know fear. And they know to fear the scent of a predator. But how do their brains quickly figure out with a sniff that a cat is nearby? It's a complex process that starts with the scent being picked up by specific receptors in their noses. But until now it wasn't clear exactly how these scent signals proceeded from nose to noggin for neural processing. In a study to be published in Nature (available online now to subscribers), Stanford researchers describe a new technique that makes it...

2010-10-25 16:22:49

A new study in the Journal of General Physiology (JGP) shows that the contribution of odorant receptors (ORs) to olfactory response in mammals is much more complex than previously thought, with important consequences for odorant encoding and information transfer about odorants to the brain. The study appears online on October 25 (www.jgp.org). ORs, which provide a system for mammals to discriminate between many different odors, form a large, diverse group of G protein"“coupled receptors...

2010-10-19 07:37:17

NOXO Study Boostâ“ž¢ and NOXO Memory Enhancerâ“ž¢ are important, safe and effective alternatives for users of illegal and non prescribed amphetamines (Adderall). Beyond the serious the health and legal consequences of the Class II controlled drug is the ethical debate surrounding Adderall's devaluation of the college experience and the lack of knowledge of the drug's short and long-term effects including schizophrenia. Wynnewood, PA...

2010-10-18 21:45:25

'Sister' mitral cells may broadcast 2 distinct channels of information on odors to the cortex A team co-led by neuroscientists at Cold Spring Harbor Laboratory (CSHL) has shed light -- literally -- on circuitry underlying the olfactory system in mammals, giving us a new view of how that system may pull off some of its most amazing feats. It has long been known from behavioral experiments that rodents, for instance, can tell the difference between two quite similar odors in a single sniff. But...

2010-10-18 13:35:19

Harvard University neurobiologists have created mice that can "smell" light, providing a potent new tool that could help researchers better understand the neural basis of olfaction. The work, described this week in the journal Nature Neuroscience, has implications for the future study of smell and of complex perception systems that do not lend themselves to easy study with traditional methods. "It makes intuitive sense to use odors to study smell," says Venkatesh N. Murthy, professor of...


Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.