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Latest Olfactory bulb 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...

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...

Single Olfactory Gene Helps Mice Detect Predators
2013-04-30 08:47:01

Alan McStravick for redOrbit.com — Your Universe Online Dogs can hear sounds at higher frequencies. Bats can ℠see´ with sonar although their eyes are practically useless. And, apparently, the mouse can smell a predator´s urine from a mile away. Each of these traits has played an important role in the evolution of each animal. But what is especially amazing with regard to mice and their olfactory receptors is their ability to sense a threat may be determined by only...

2013-04-23 12:48:57

University of Texas Health Science Center study suggests inflammation's role in the development of the disease Parkinson's disease (PD) is a progressive degenerative disease affecting a person's ability to coordinate and control their muscle movement. What starts out as a tremor in a finger will eventually lead to difficulty in writing and speaking, and ultimately the inability to walk without assistance. Since the 1950s research has shown that people with Parkinson's have decreased levels...

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...

Hawk Moths Learn To Use Brain To Find Alternative Food Sources
2012-12-07 13:38:08

Brett Smith for redOrbit.com - Your Universe Online When their favorite food isn´t readily available, hawk moths are able to switch to a different olfactory ℠channel´ in their brain, enabling them to learn how to find alternative nectar sources, according to a new report in the journal Science Express. The two olfactory channels allow the moths to survive in a changing floral environment and the researchers are expecting that better understanding of this mechanism...

2012-06-21 23:39:19

Neurons come in an astounding assortment of shapes and sizes, forming a thick inter-connected jungle of cells. Now, UCL neuroscientists have found that there is a simple pattern that describes the tree-like shape of all neurons. Neurons look remarkably like trees, and connect to other cells with many branches that effectively act like wires in an electrical circuit, carrying impulses that represent sensation, emotion, thought and action. Over 100 years ago, Santiago Ramon y Cajal, the...

2012-05-24 20:12:28

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 are formed in this area after birth. The discovery, which is published in the scientific journal Neuron, is based on the age-determination of the cells using the carbon-14 method, and might explain why the human sense of smell is normally much worse than that of other animals. "I've never...

Brain Handles Odors In A Different Way
2012-03-22 05:44:48

Researchers from the Stowers institute for Medical Research have traced individual odor molecules in the brain to create a new model of how our sense of smell works. While once thought to cluster related smells, researchers have know discovered that the brain reacts to smells in a broader sense. Previous research has shown that the brain handles the senses in a very orderly way. Things that we touch were thought to be mapped together in the somatosensory cortex, things that we heard...

2012-02-20 12:56:23

Drugs may act like bad electrician, messing up wiring in brain and nervous system Alzheimer's disease drugs now being tested in clinical trials may have potentially adverse side effects, according to new Northwestern Medicine research. A study with mice suggests the drugs could act like a bad electrician, causing neurons to be miswired and interfering with their ability to send messages to the brain. The findings, from the scientist whose original research led to the drug development,...


Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
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