News tagged with sense of smell
Researchers identify critical link in mammalian odor detection
Researchers at the Monell Center and collaborators have identified a protein that is critical to the ability of mammals to smell. Mice engineered to be lacking the Ggamma13 protein in their olfactory receptors were functionally ...
Neuroscience
May 06, 2013 |
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Parkinson's discovery could lead to earlier diagnosis
(Medical Xpress)—A new study could help earlier diagnosis of Parkinson's disease, after a Malaysian researcher working for Newcastle University in the UK identified that even early in the disease people experience symptoms.
Parkinson's & Movement disorders
Apr 18, 2013 |
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Flies reveal that a sense of smell, like a melody, depends upon timing
(Medical Xpress)—The sense of smell remains a mystery in many respects. Fragrance companies, for instance, know it is crucial that chemical compounds in perfumes reach nostrils at different rates to create ...
Neuroscience
Apr 10, 2013 |
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Parkinson's can lead to anxiety and other non-motor symptoms, even early on
While movement problems are the main symptom of Parkinson's disease, a new study shows that even early in the course of disease people frequently experience many non-motor symptoms such as drooling, anxiety and constipation. ...
Parkinson's & Movement disorders
Jan 14, 2013 |
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Test to provide help for sufferers of olfactory dysfunction
A psychological test, available for the first time, is intended to make the counselling and treatment of patients with olfactory dysfunction significantly easier. The new method has been developed by the ...
Neuroscience
Dec 20, 2012 |
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Dogs can accurately sniff out 'superbug' infections
Dogs can sniff out Clostridium difficile (the infective agent that is responsible for many of the dreaded "hospital acquired infections") in stool samples and even in the air surrounding patients in hospital with a very h ...
Diseases, Conditions, Syndromes
Dec 13, 2012 |
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3D manufacturing: Printing a new nose
The suffering caused by the loss of a nose must be indescribable. In terms of function, a sense of smell is perhaps less important than the ability to see, hear and eat - and we can breathe through our mouth ...
Other
Nov 08, 2012 |
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Animals learn to fine-tune their sniffs
Animals use their noses to focus their sense of smell, much the same way that humans focus their eyes, new research at the University of Chicago shows.
Neuroscience
Oct 30, 2012 |
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Rats recruited to hunt for TB in Mozambique
A swarm of trained rats is on its way to Mozambique to help the country's over-stretched health system detect tuberculosis in patients, officials said Friday.
Diseases, Conditions, Syndromes
Oct 12, 2012 |
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Study suggests that a poor sense of smell may be a marker for psychopathic traits
People with psychopathic tendencies have an impaired sense of smell, which points to inefficient processing in the front part of the brain. These findings by Mehmet Mahmut and Richard Stevenson, from Macquarie University ...
Psychology & Psychiatry
Sep 20, 2012 |
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Gene therapy restores sense of smell, may aid research into other diseases caused by cilia defects
Scientists have restored the sense of smell in mice through gene therapy for the first time—a hopeful sign for people who can't smell anything from birth or lose it due to disease.
Medical research
Sep 02, 2012 |
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Lesson in sleep learning: Associations formed in brains of sleeping volunteers remained intact when subjects were awake
Is sleep learning possible? A new Weizmann Institute study appearing today in Nature Neuroscience has found that if certain odors are presented after tones during sleep, people will start sniffing when they hear the tones ...
Neuroscience
Aug 26, 2012 |
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Smelling a skunk after a cold: Brain changes after a stuffed nose protect the sense of smell
Has a summer cold or mold allergy stuffed up your nose and dampened your sense of smell? We take it for granted that once our nostrils clear, our sniffers will dependably rebound and alert us to a lurking ...
Neuroscience
Aug 12, 2012 |
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No new neurons in the human olfactory bulb
(Medical Xpress) -- Research from Karolinska Institutet shows that the human olfactory bulb - a structure in the brain that processes sensory input from the nose - differs from that of other mammals in that no new neurons ...
Neuroscience
May 24, 2012 |
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Gene mapping reveals architecture that controls expression of genes responsible for our sense of smell
Within the nasal cavity, millions of sensory neurons in a postage-stamp-sized patch of tissue called the olfactory epithelium control our sense of smell. Thanks to the exquisitely controlled expression of ...
Genetics
May 18, 2012 |
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Olfaction
Olfaction (also known as olfactics or smell) refers to the sense of smell. This sense is mediated by specialized sensory cells of the nasal cavity of vertebrates, and, by analogy, sensory cells of the antennae of invertebrates. For air-breathing animals, the olfactory system detects volatile or, in the case of the accessory olfactory system, fluid-phase chemicals. For water-dwelling organisms, e.g., fish or crustaceans, the chemicals are present in the surrounding aqueous medium. Olfaction, along with taste, is a form of chemoreception. The chemicals themselves which activate the olfactory system, generally at very low concentrations, are called odors.
For more information about Olfaction, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
