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Showing category "Olfaction" (Show all posts)

Sense of smell could be clue to dementia, US research finds

Posted by Admin on Monday, October 2, 2017, In : Olfaction 

Older people with a poor sense of smell have a greater chance of developing Alzheimer's and other forms of dementia, US research has shown.


The discovery raises the prospect of using "sniffing sticks" to flag individuals needing closer monitoring in the next five years.


Though humans lack the acute sense of some animals such as dogs, they can distinguish up to a trillion different odours.


The brain's ability to sort and recognise smells may provide a way of spotting early damage caused by ...


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New Device Could Help Improve Taste of Foods Low in Fat, Sugar, and Salt

Posted by Admin on Thursday, September 29, 2016, In : Olfaction 

Scientists may be closing in on a way to let consumers savor the sweet taste of cake, cookies, and other culinary delights without the sugar rush.


In preliminary tests using a new device developed in-house that allows them to screen for odor compounds in real foods, they have isolated several natural aromatic molecules that could be used to trick our brains into believing that desserts and other foods contain more fat, sugar, or salt than they actually do.


“Most consumers know that they s...


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Scientists discover the 'white noise' of smell

Posted by Admin on Wednesday, November 21, 2012, In : Olfaction 

Scientists have discovered a new smell, but you may have to go to a laboratory to experience it yourself.


The smell is dubbed "olfactory white," because it is the nasal equivalent of white noise, researchers report today (Nov. 19) in the journal Proceedings of the National Academy of Sciences. Just as white noise is a mixture of many different sound frequencies and white light is a mixture of many different wavelengths, olfactory white is a mixture of many different smelly compounds.


In fac...


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People can smell your age (Probably best not to ask)

Posted by Admin on Thursday, May 31, 2012, In : Olfaction 

Forget the botox and hair dye - people can smell your age, a study has shown.


In tests, volunteers were able to distinguish between young, middle aged and elderly individuals by sniffing their body odour. But contrary to popular conception, "old person smell" was rated less intense and unpleasant than other age group odours.



Scientists collected armpit odour samples from three groups of 12 to 16 donors aged 20 to 30, 45 to 55, and 75 to 95. Donors were asked to sleep for five nights in T...


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Effects of peppermint scent administration on Nintendo Wii performance

Posted by Admin on Wednesday, May 2, 2012, In : Olfaction 

Thirty-three college students completed questionnaires related to video game play and mood, and then played video games that required a lot of mental activity on the Wii video game system. These games included Wii Fit Plus games, such as Perfect 10, Snowball Fight, and Obstacle Course. When they played the games they either received peppermint scent or no scent. During play, their physiology was measured (such as heart rate and blood pressure).


Gamers who received peppermint scent showed sig...


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Anxiety might help people sniff out threats

Posted by Admin on Monday, April 16, 2012, In : Olfaction 

Anxiety improves a person's ability to smell potentially threatening odors, according to a new study.



Smell is essential to animals in order to detect, locate and identify predators. Odors also trigger powerful emotional responses in humans, the study authors pointed out.



Researchers Elizabeth Krusemark and Wen Li of the University of Wisconsin-Madison exposed 14 young adults to different types of odors while they underwent MRI brain scans. The participants' anxiety levels and breathing pat...


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