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Latest Olfactory system Stories

2014-08-04 12:52:44

Harvard University Study shows that mice can identify specific odors amid complex olfactory environments For many animals, making sense of the clutter of sensory stimuli is often a matter or literal life or death. Exactly how animals separate objects of interest, such as food sources or the scent of predators, from background information, however, remains largely unknown. Even the extent to which animals can make such distinctions, and how differences between scents might affect the...

african elephants
2014-07-25 02:00:22

Cold Spring Harbor Laboratory Sense of smell is critical for survival in many mammals. The ability to distinguish different odors, which is important for sniffing out food, avoiding predators, and finding mates, depends on the number and type olfactory receptors found in an organism's genome. In a study published this week in Genome Research, researchers examined the olfactory receptor (OR) repertoire encoded in 13 mammalian species and found that African elephants have the largest number...

2014-07-08 11:11:21

Journal of Neurosurgery Publishing Group A spinal mass was identified in a young woman with complete spinal cord injury 8 years after she had undergone implantation of olfactory mucosal cells in the hopes of regaining sensory and motor function. The case is reported and discussed in "Autograft-derived spinal cord mass following olfactory mucosal cell transplantation in a spinal cord injury patient. Case report," by Brian J. Dlouhy, MD, Olatilewa Awe, MD, Rajesh C. Rao, MD, Patricia A....

food aroma molecules
2014-06-27 04:46:18

Alan McStravick for redOrbit.com - Your Universe Online The sense of smell in humans has undergone many permutations as we have traveled through evolutionary time. It was once believed that each successive version of our olfactory ability was weaker than the last. Scientists claimed as our sense of sight became ever greater and required more of our energy, our sense of smell suffered. They cited the gradual reduction of our noses paired with the movement of our eyes closer to the middle of...

2014-04-11 10:16:28

To accommodate a lifetime of scents and aromas, mammals have hundreds of genes that each produce a different odorant receptor. The complex and diverse olfactory system they build remains adaptable, but a new study in the journal Science shows that the system's flexibility, or plasticity, has its limits. Working in mice, Brown University scientists found that the fundamental neural wiring map between the nose and the brain becomes established in a critical period of early development and then...

2014-04-11 10:13:44

Stowers investigators reveal a developmental switch in targeting capacity of olfactory neurons The human nose expresses nearly 400 odorant receptors, which allow us to distinguish a large number of scents. In mice the number of odor receptors is closer to 1000. Each olfactory neuron displays only a single type of receptor and all neurons with the same receptors are connected to the same spot, a glomerulus, in the brain. This convergence, or wiring pattern, is often described as an...

Jumping bristletail Lepismachilis y-signata
2014-03-30 03:00:54

Max Planck Institute for Chemical Ecology Odorant receptors of recent insects evolved long after insects migrated from water to land. An insect’s sense of smell is vital to its survival. Only if it can trace even tiny amounts of odor molecules is it is able to find food sources, communicate with conspecifics, or avoid enemies. According to scientists at the Max Planck Institute for Chemical Ecology, many proteins involved in the highly sensitive odor perception of insects emerged...

Human Nose Can Distinguish More Than 1 Trillion Scents
2014-03-21 04:48:03

redOrbit Staff & Wire Reports - Your Universe Online For decades, experts have claimed that people were capable of detecting 10,000 different odors, but new research appearing in the March 21 edition of Science suggests that the actual number of scents detectable by the human nose is considerably higher. In fact, according to an experiment led by Andreas Keller of the Rockefeller University Laboratory of Neurogenetics and Behavior, human noses and brains are sensitive enough to...

The tent-making bat Uroderma bilobatum
2014-03-04 05:07:25

Brett Smith for redOrbit.com - Your Universe Online While scientists know that a superfamily of genes inside olfactory receptors is responsible for our sense of smell – we still don’t know the mechanism behind the interpretation of odor molecules into a particular smell. A new study published in the journal Molecular Biology and Evolution has found a distinct gene pattern in the olfactory receptors of fruit-eating bats – potentially shedding some light on the mechanism behind our...

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,...


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 'karpos', fruit.
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