Tag: "olfactory" at medical news
Alzheimers Disease Could Soon Be Treated With Nose Drops
...casionally, Frey points out, the odd anatomyof the olfactory
system can be dangerous because it provides a way ...nt amount of NGF had made its way not only intothe olfactory
bulb, but also into the hippocampus, amygdala and other regionsnot directly involved in smelling. In...
Neurobiologists Show How The Brain Processes Signals From Pheromones
...s dramatically from the wiring diagramfor the main olfactory
system, which all mammals, including humans, use t...nd we have shown that is more complex than themain olfactory
system," says senior author Peter Mombaerts, M.D., Ph.D.,assistant professor and head of the Laborat...
How the nose knows
...ead or the fumes of a passingautomobile, the human olfactory
system is an amazing scent sleuth, capable ofdisti...ive ability. In order to produce a response in the olfactory
system, molecules of aparticular substance must penetrate the nose. There they encounterolfactory re...
Scientists can now see sense of smell
...ion tenfold to detect changes in the tinyhair-thin olfactory
structures, called glomeruli, in rats' brains. ...a section of a rat's skulluntil they could see the olfactory
bulbs -- stem-like projections in theforebrain that receive signals from the chemical receptor cells...
Study shows synthetic pheromone in womens perfume increases intimate contact with men
...directly stimulate a man's sexual behavior through olfactory
sensors processing information. Either the olfactory
epithelium or the vomeronasal organ, which is located in the nose and conveys messages to the higher...
Kaleidescope eyes: the secrets of a novel gift
...experience, sound an auditory experience, odour an olfactory
experience. Synaesthetes, however, get an extra one or more perceptual experiences. For example, a particular sound might induce vivid experiences of color, taste or odour. Visual symbols like letters or numbers might elicit specific colors produci...
The brain risks of binge drinking
...during a binge pattern of drinking. Damage to the olfactory
bulb, responsible for smell, occurred after just t...rawal. "This study shows significant damage in the olfactory
bulb after just 2 days of heavy drinking," said Crews, "which is a short period of time relative to ...
Evidence that neurons prune only 'twigs' to rewire themselves
...tes" remain largely unchanged in the highly active olfactory
processing region of the mouse brain. Such evidenc...studied neurons in the neural structure called the olfactory
bulb -- the collection of neurons that represent the initial processing stage for information from o...
Researchers identify enzyme that may turn fleeting experience into lasting memory
...e lasting memory in the female mouse requires that olfactory
(smell) information about her partner coincide with sensory information about the mating. The information is carried by separate pathways, one involving the neurotransmitter glutamate, the other norepinephrine. Norepinephrine, which is closely relate...
Loss of smell linked to key protein in Alzheimer's disease
... commemorative volume 1000. "The loss of smell or olfactory
dysfunction has been known for more than a decade...owed little or no interest in such odors, implying olfactory
dysfunction. Analysis of brain tissue from the diseased mice confirmed a link between the olfactory...
Impaired sense of smell increases risk for certain hazards
...7 million adults in the United States have chronic olfactory
dysfunction, according to background information i...c for smell and taste disorders, and who underwent olfactory
testing and were interviewed between 1983 and 2001. Of these patients, the average age was 50 years,...
Odorants enhance survival of olfactory neurons
A new study finds that the olfactory
sensory neurons (OSNs) exhibit activity-dependent ... a significant role in odor-induced enhancement of olfactory
cell survival. It is well known that the olfactory
epithelium can adapt in the very short term to od...
Researchers invent way to determine optimal conditions for spinal cord nerve regen in lab animals
...ting nerve regrowth. These include: Schwann cells, olfactory
ensheathing glia, neural stem cells and others. But researchers lacked an effective way to compare the ability of different cell types to support axonal regeneration. Then they discovered that the scaffolding also can be used as a kind of "measuring...
How odors help make multimodal memories
... colleagues sought to find out whether the brain's olfactory
centers contribute to reconstructing multisensory ...f odor "imagery," rather than participation of the olfactory
center in the memory-associating process. However, when the scientists asked the subjects about the ...
Remembrance of smells past
...areas of the brain such as the hippocampus and the olfactory
cortex - the smell gateway of the brain. In Proust's story, protagonist Charles Swann is transported back to his childhood when the smell of a biscuit dipped in tea triggers memories from his past. Dr Jay Gottfried and colleagues at UCL's Instit...
Mothers have brains primed for care
...er experiments are underway to rule out changes in olfactory
ability and to explore the changes in the structure and activity of the hypothalamus and hippocampus as a result of motherhood. "The mammalian female brain expresses a great deal of plasticity and creativity in service to, and in support of, reprodu...
Olfactory bulb stem cells and Lou Gehrig's disease
...s of mouse stem cells taken from the adult brain's olfactory
bulb can delay symptoms and death in a mouse model... of the Society for Neuroscience in San Diego. The olfactory
bulb, the center of smell detection, houses numerous primitive stem cells that normally feed the con...
Mouse study: Signal overload in Alzheimer brains
.... "In normal adult mice, stem cells taken from the olfactory
bulb returned to the olfactory
bulb -- they returned to where they belong -- even though they had come from a different mouse," say...
Several new techniques show promise for spinal cord repair
...ed with the sense of smell. Nerve cells within the olfactory
tissue in the nose divide throughout life and send...ages. The Yale researchers obtained OECs from the olfactory
bulbs of adult transgenic--genetically altered--rats expressing green fluorescent protein and transp...