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Latest Olfactory system Stories

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...

Understanding The Nose
2012-12-19 18:59:17

Michael Harper for redOrbit.com — Your Universe Online Science is a magnificent thing and yet, there is still so much we don´t yet understand. For instance, scientists are still working to fully understand the part of our body that resides right in front of our face. More than 100 years ago, scientists discovered a mechanism that provides feedback from our nose to our brain. Though these scientists discovered this mechanism, they weren´t yet able to fully understand how it...

How Flies Avoid Rotten Food
2012-12-07 07:23:29

[ Watch the Video: Flies Sniff Out and Avoid Spoiled Food ] April Flowers for redOrbit.com - Your Universe Online Eating spoiled food can be fatal as it allows bacterial pathogens to enter the digestive system. One of the main tasks of the sense of smell is to detect signs of decay, allowing us and other animals to avoid such food poisoning. A new study, conducted by behavioral scientists and neurobiologists at the Max Planck Institute for Chemical Ecology, has decoded the neural...

Odor And The Brain: What The Nose Knows
2012-11-15 11:36:09

Lawrence LeBlond for redOrbit.com - Your Universe Online Specific patterns in the nasal passageway that determine which olfactory neurons are associated with which particular odors have remained a mystery for scientists. The human nose has millions of these olfactory neurons grouped into hundreds of different neuron types. And each of these neuron types expresses only one odorant receptor in one region of the brain, allowing that specific odor to be sensed. Now, researchers from UC...

2012-09-19 16:18:31

A new study of the sense of smell lends support to a controversial theory of olfaction: Our noses can distinguish both the shape and the vibrational characteristics of odorant molecules. The study, in the journal Physical Chemistry Chemical Physics, demonstrates the feasibility of the theory — first proposed decades ago — that the vibration of an odorant molecule´s chemical bonds — the wagging, stretching and rocking of the links between atoms — contributes to...

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2012-09-11 23:08:29

John Neumann for redOrbit.com — Your Universe Online Researchers have long known that ants live in some of the most complex social structures of any animal. With the division of labor and communication between individual ants and the ability to solve complex problems, the reason for such complex structures may be the increased number of smells that ants can discern. A team of scientists, led by Lawrence Zwiebel and his research team at Vanderbilt, recently completed the first full...


Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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