Tag: "smell" at medical news

Cellular porthole connects odors to brain

...dors are sensed all the way to the brain. When you smell cookies baking, odor molecules bind to these cells, triggering a series of molecular "gates" on the cell surface to open. The open gates let charged ions, including chloride, move in and out of the cell, creating differences in charge between the ins...

Scents and emotions linked by learning, Brown study shows

...included 30 female participants. All were asked to smell five scents, infused in cotton in glass jars, and ... also played the game and watched the film, but no smell was present. The second group was exposed to the scent but watched neutral nature documentaries duri...

Study finds lemons, lilac among top 10 smells that predict Alzheimer's Disease

...co, Dec. 13, 2004 -- The inability to identify the smell of lemons, lilac, leather and seven other odors predicts which patients with minimal to mild cognitive impairment (MMCI) will develop Alzheimer's Disease, according to a study presented today at the American College of Neuropsychopharmacology (ACNP) ...

Several new techniques show promise for spinal cord repair

...ife and send new axons-or nerve fibers-to transmit smell sensations to the brain. Scientists have long thought that OECs assist the normal regeneration of these axons and guide them into the brain where they make new functional connections. Because axons lose myelin after a trauma such as spinal cord injur...

Mouse study: Signal overload in Alzheimer brains

...inson's disease. The olfactory bulb, the center of smell detection, houses numerous primitive stem cells that normally feed the constant, life-long regeneration of odor-detecting nerves. Because they are found in a fairly accessible region of the brain and could conceivably be removed from a person's olfac...

Olfactory bulb stem cells and Lou Gehrig's disease

...ce in San Diego. The olfactory bulb, the center of smell detection, houses numerous primitive stem cells that normally feed the constant, life-long regeneration of odor-detecting nerves. Because they are found in a fairly accessible region of the brain and could conceivably be removed from a person's olfac...

Study: Brain battles itself over short-term rewards, long-term goals

...e emotional reactions, such as the sight, touch or smell of a desirable object, often cause people to take impulsive actions that they later regret," Loewenstein said. Such psychological cues are known to trigger dopamine-related circuits in the brain similar to the ones that responded to immediate rewards...

Endoscopic approach best for repairing bone defect between brain, nasal cavity

...nt portion of the brain out of the way destroying smell nerves in the process and approaching the defect from the top, an approach that may be necessary if the defect is too big to treat endoscopically, Dr. Kountakis says. However, Dr. Kountakis suggests trying the endoscopic approach which uses sma...

Riverbank filtration pulls pollutants from drinking water

...pe for more than 50 years to improve the taste and smell of drinking water and to remove some hazardous pollutants such as industrial solvents. But after studying these natural filtration processes for six years at three rivers in the Midwestern United States, Johns Hopkins researchers have determined that...

Remembrance of smells past

...or the way memories are stored? A UCL study of the smell gateway in the brain has found that the memory of ... 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 ch...

How odors help make multimodal memories

...each umbrella, the sound of crashing surf, and the smell of brackish seaweed." While researches know that t...ures and sounds, it wasn't known whether taste and smell brain regions similarly participated in memory association. In their experiments, the researchers pr...

Scents will not rouse us from slumber, says new Brown University study

...cents cannot. People cannot rely on their sense of smell to awaken them to the danger of fire, according to...er's co-author Mary A. Carskadon, "we 'wake up and smell the coffee,' not the other way around." Carksadon is a professor of psychiatry and human behavior in...

Exposure to food increases brain metabolism

... questionnaire. The food was warmed to enhance its smell and the subjects were allowed to view and smell it, as well as taste a small portion placed on their tongues with a cotton swab. They were also aske...

Odorants enhance survival of olfactory neurons

...ury. In addition, we lose about 1% of our sense of smell per year as we age, and olfaction loss is associated with several neurodegenerative diseases, including Alzheimer's and Parkinson's disease. The data in this paper suggests that drugs that activate the Erk/MAP kinase pathway may be used to protect ol...

Impaired sense of smell increases risk for certain hazards

...CAGO Patients with an impaired or absent sense of smell are at risk for experiencing certain hazards that ..., like fires, spoiled food or gas leaks. Sense of smell can be impaired by head trauma, viral infection, nasal obstruction or septal deviation, neurologic d...

Going low tech, low cost to ease the terrors of dementia

..., or helping her put on hand lotion and having her smell it. For a man, it could be taking him outdoors for a walk if that's something he has loved doing all his life. You can do so many little things that make so much difference in their quality of life. Unfortunately, we don't provide enough support to n...

Loss of smell linked to key protein in Alzheimer's disease

...ity of Pennsylvania School of Medicine have linked smell loss in mice with excessive levels of a key protei...rly and first clinical signs of such diseases. If smell function declines as the levels of this protein increase in brain regions associated with smelling, ...

Could you suffer from psychosis? The nose knows

...ogy tested their theory that a vulnerable sense of smell could be used as a possible diagnostic tool for ps...an with the understanding that a person's sense of smell is intimately linked to the area of your brain that deals with emotions and related non-language fun...

Food irradiation is focus of two-day symposium, Aug. 19-20

...on, including: Changes in meat flavor, color and smell Antioxidant increases in fruit juices Migration of components from packaging into food products New packaging materials used in irradiation Evaluation of packages containing irradiated meals for astronauts Irradiation's effects on items sent through ...

Heavy drinkers seem to get a bigger 'bang' from alcohol than do light drinkers

...f two or four drinks) or a placebo with an alcohol smell and taste during three early evening testing sessions. At various intervals, each participant completed questionnaires and was tested for their heart rate, and blood alcohol and cortisol (a stress hormone) levels. "The heavy drinkers showed increase...

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