Navigation Links
The smell of white
Date:11/26/2012

You can see the color white; you can hear white noise. Now, Weizmann Institute researchers show that you can also smell a white odor. Their research findings appear today in the Proceedings of the National Academy of Sciences (PNAS).

The white we see is actually a mixture of light waves of different wavelengths. In a similar manner, the hum we call white noise is made of a combination of assorted sound frequencies. In either case, to be perceived as white, a stimulus must meet two conditions: The mix that produces them must span the range of our perception; and each component must be present at the exact same intensity. Could both of these conditions be met with odors, so as to produce a white smell? That question has remained unanswered, until now, in part due to such technical difficulties as getting the intensities of all the scents to be identical.

A research team in the Neurobiology Department, led by research student Tali Weiss and Dr. Kobi Snitz, both in the group of Prof. Noam Sobel, decided to take up the challenge. They began with 86 different pure scents (each made of a single type of odor molecule) spanning the entire "smell map," diluted them to obtain similar intensities and then created blends. Each blend contained a different mixture of odors from various parts of the smell map. These blends were then presented in pairs to volunteers, who were asked to compare the two scent-blends.

The team discovered that the more odors that were blended together in the paired mixtures, the more the subjects tended to rate them as similar even though the two shared no common components. Blends that each contained 30 different odors or more were thought to be almost identical.

The researchers then created a number of such odor blends, giving them a nonsense name: Laurax. Once the subjects were exposed to one of the Laurax mixes and became accustomed to the smell, they were exposed to new blends mixtures they
'/>"/>

Contact: Yivsam Azgad
news@weizmann.ac.il
972-893-43856
Weizmann Institute of Science
Source:Eurekalert

Page: 1 2

Related biology news :

1. Smell and taste experts to discuss new discoveries
2. A trained palate: Understanding complexities of taste, smell could lead to improved diet
3. Mosquitoes -- how we smell is why they bite, research shows
4. Mice have distinct subsystem to handle smell associated with fear
5. Smell the potassium
6. Cant smell anything? This discovery may give you hope
7. NIH-funded researchers restore sense of smell in mice using genetic technique
8. The birdy smell of a compatible partner
9. The nose knows: Gene therapy restores sense of smell in mice
10. Psychopaths have an impaired sense of smell
11. Ah, that new car smell: NASA technology protects spacecraft from outgassed molecular contaminants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... , Jan. 13, 2015 Technology Showcase, Hall E ... identity authentication solutions, today announced it will showcase its EyeLock ... developed by the Department of Energy,s Oak Ridge National ... Auto Show . EyeLock,s iris identity authentication technology is being ...
(Date:1/22/2015)... NXTD and NXTDW) a biometric authentication company focused on ... Wocket™ smart wallet at CES 2015 in Las Vegas ... the "11 Hot Products at CES" in a review published in Wired.com, ... Newseveryday.com and "The top 10 gadgets from CES 2015" by Danny ...
(Date:1/22/2015)... , January 22, 2015 , ... year  The European Patent Office to present a video ... British nominations to be featured: Christofer Toumazou and ... former finalists and winners of the Award   Starting ...
Breaking Biology News(10 mins):EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 2EyeLock Debuts First Iris Authentication Technology Embedded in 3D Printed Automobile 3CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 2Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 3
... as a folk remedy, but now scientists from Britain and ... as a treatment for herpes. The team,s findings, published in ... between two teams to established scientific evidence for traditional medicines. ... across mainland Europe and Asia. From the Middle Ages onwards ...
... OAK RIDGE, Tenn, Feb. 22, 2011 -- A theoretical ... National Laboratory is bringing supercomputer simulations and experimental results ... ORNL,s Jeremy Smith collaborated on devising a method -- ... experiments and computer simulations to strengthen analyses of molecules ...
... Conservation Society (WCS) working in conjunction with the Turtle ... from around the world some of which currently ... hunting for both food and the pet trade along ... in the next decade unless drastic conservation measures are ...
Cached Biology News:Old folk remedy revived: How tansy may be a treatment for herpes 2'Fingerprints' match molecular simulations with reality 2Shellshock: New report lists 25 most endangered turtle species 2
(Date:1/23/2015)... MD (PRWEB) January 23, 2015 Portal ... modern digital workplaces on Microsoft Office 365 and SharePoint ... Future 50 Award program for being one of the region’s ... revenue and employee growth. , “To be recognized a ...
(Date:1/22/2015)... BOSTON , Jan. 22, 2015  Transwestern | RBJ today ... feet of office space for Shire a leading biopharmaceutical company, ... . Transwestern | RBJ,s Robert Richards , president, and ... the lease for the entire five-floor building at 95 Hayden ...
(Date:1/22/2015)... Diego, California (PRWEB) January 22, 2015 ... Promotional Offer to their comprehensive portfolio of Eppendorf ... allows customers to purchase a Centrifuge 5424/5424 R and ... Bundle of either Eppendorf Research plus or Eppendorf Reference ...
(Date:1/22/2015)... NJ (PRWEB) January 22, 2015 ... technologies such as the Bioruptor® and complete solutions ... system for chromatin immunoprecipitation, alleviating the need for ... and controls needed for ChIP of histones or ...
Breaking Biology Technology:Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 2Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 3Transwestern?RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Eppendorf Announces Promotional Bundle Which Includes: Eppendorf Centrifuge 5424, 3-Pack of Pipettes, and Tips - Available Now at Pipette.com 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2
... PMA Study, FORT LAUDERDALE, Fla., April 23 ... announced that on,April 16, 2008, the Company received ... Jay Bendis, Patrick Gorman, and Sherman Lazrus.,These resignations ... outside,funding sources as a condition to such funding. ...
... Paraplatin Will Become the, Clinical Gold Standard Treatment by 2011, ... ... Resources, WALTHAM, Mass., April 23 Decision Resources, one of ... finds that surveyed oncologists say that a therapy,s,effect on overall survival ...
... Ceregene, Inc., a biopharmaceutical,company, today announced that ... management,team. Maurice Mezzino has been hired to the ... Loewen-Rodriguez joins the company as,senior director, regulatory affairs. ... commercial activities as Ceregene transitions to a,later stage ...
Cached Biology Technology:Imaging Diagnostic Systems Accepts Resignations of Outside Directors 2Imaging Diagnostic Systems Accepts Resignations of Outside Directors 3Avastin Used in Combination with Drugs from Bristol-Myers Squibb Has Advantages in Survival Rates Over the Current Sales-Leading Therapy for Advanced Ovarian Cancer 2Avastin Used in Combination with Drugs from Bristol-Myers Squibb Has Advantages in Survival Rates Over the Current Sales-Leading Therapy for Advanced Ovarian Cancer 3Ceregene Announces Two Key Additions to Leadership Team 2Ceregene Announces Two Key Additions to Leadership Team 3
Mouse Anti-Amyloid beta [1-16], clone 6E10, Monoclonal Antibody...
... Development kit contains the basic components required ... measure natural and recombinant mouse Dickkopf homolog-1 ... Each kit contains sufficient materials to run ... that the following conditions are met: ...
HES-1 [Hairy 1], Available Summer 2003...
E1A (adenovirus early region 1)...
Biology Products: