Navigation Links
Swarming insect provides clues to how the brain processes smells
Date:11/25/2013

Our sense of smell is often the first response to environmental stimuli. Odors trigger neurons in the brain that alert us to take action. However, there is often more than one odor in the environment, such as in coffee shops or grocery stores. How does our brain process multiple odors received simultaneously?

Barani Raman, PhD, of the School of Engineering & Applied Science at Washington University in St. Louis, set out to find an answer. Using locusts, which have a relatively simple sensory system ideal for studying brain activity, he found the odors prompted neural activity in the brain that allowed the locust to correctly identify the stimulus, even with other odors present.

The results were published in Nature Neuroscience as the cover story of the December 2013 print issue.

The team uses a computer-controlled pneumatic pump to administer an odor puff to the locust, which has olfactory receptor neurons in its antennae, similar to sensory neurons in our nose. A few seconds after the odor puff is given, the locust gets a piece of grass as a reward, as a form of Pavlovian conditioning. As with Pavlov's dog, which salivated when it heard a bell ring, trained locusts anticipate the reward when the odor used for training is delivered.

Instead of salivating, they open their palps, or finger-like projections close to the mouthparts, when they predict the reward. Their response was less than half of a second. The locusts could recognize the trained odors even when another odor meant to distract them was introduced prior to the target cue.

"We were expecting this result, but the speed with which it was done was surprising," says Raman, assistant professor of biomedical engineering. "It took only a few hundred milliseconds for the locust's brain to begin tracking a novel odor introduced in its surrounding. The locusts are processing chemical cues in an extremely rapid fashion."

"There were some interesti
'/>"/>

Contact: Neil Schoenherr
nschoenherr@wustl.edu
314-935-5235
Washington University in St. Louis
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Crabs, insects and spiders vulnerable to oil spill, but also resilient
2. Entomology 2012 to present 105 insect symposia in November
3. A bit touchy: Plants insect defenses activated by touch
4. UCSB study shows forest insects and diseases arrive in US via imported plants
5. Unique adaptations to a symbiotic lifestyle reveal novel targets for aphid insecticides
6. Jurassic pain: Giant flea-like insects plagued dinosaurs 165 million years ago
7. Insect glands may illuminate human fertilization process
8. Protein signal is crucial for accurate control of insect size
9. Insect scientists to meet in Lincoln, Neb., in June
10. New rearing system may aid sterile insect technique against mosquitoes
11. NHM entomologist wins grant to investigate mega-diverse insect order
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Swarming insect provides clues to how the brain processes smells
(Date:10/31/2014)... Dr. John Schoggins , Assistant Professor of Microbiology at ... Innovator Award from the National Institutes of Health (NIH) ... harbor numerous viruses without becoming sick. , Dr. ... one of 85 awards given under the High Risk/High ... New Innovator Awards were created to support highly creative ...
(Date:10/31/2014)... key steps involved in programmed cell death, offering new ... and neurodegenerative diseases. , The research teams from ... discover the three-dimensional structure of a key cell death ... how it causes cell death. Their studies were published ... Proceedings of the National Academy of Sciences ...
(Date:10/31/2014)... Oct. 30, 2014  HITLAB SM , a ... announce its inaugural HITLAB Innovators Summit SM ... Library. HITLAB will partner with the Clinton Foundation,s ... Health, ProtoHack, Columbia Business School Alumni Club of ... Industrial Engineering and Operations Research, bringing together leaders ...
Breaking Biology News(10 mins):UT Southwestern Microbiologist awarded prestigious NIH research grant 2A matter of life and death: Cell death proteins key to fighting disease 2HITLAB Announces Inaugural HITLAB Innovators Summit 2HITLAB Announces Inaugural HITLAB Innovators Summit 3
... promising new technique to ensure complete tumor removal at ... of Radiology. , Researchers used light waves in a ... examine excised breast tissue and determine if the removed ... This technology has the potential to eliminate the need ...
... different species, evolution whizzes along. As different species ... environment and prosper. It happens in marine sediments, ... in precancerous tumors, too. , In a study ... Ph.D., a researcher at The Wistar Institute, and ...
... a natural mechanism to get inside cells and grow, researchers ... millions of receptors on the cell's surface routinely do after ... Chair in Oncologic Pathology at the Medical College of Georgia. ... 23 by Proceedings of the National Academy of Sciences. , ...
Cached Biology News:Terahertz imaging may reduce breast cancer surgeries 2Researchers create pigs that produce heart-healthy omega-3 fatty acids 2Common bacteria pirate natural mechanism to get inside cells 2
(Date:10/31/2014)... 2014 ENVIRON , an ... today that Dr. Harvey Clewell III has rejoined ... work closely with senior professionals in ENVIRON’s Health ... serve at The Hamner Institutes for Health Sciences ... where he is Director, Center for Human Health ...
(Date:10/30/2014)... (PRWEB) October 30, 2014 The report ... Chemicals), by Application (Cosmetics & Toiletries, and Soaps & ... to 2019”, has defined and segmented the Fragrance Ingredients ... trends in terms of value. The market has been ... North America, Europe, Asia-Pacific, Latin America, and Rest of ...
(Date:10/30/2014)... (PRWEB) October 30, 2014 2014 ... HCL Industry” is a professional and in-depth research ... provides basic Naltrexone HCL information, including its definition, ... as industry overview. This research covers the international ... as global industry analysis covering macroeconomic environment & ...
(Date:10/30/2014)... 2014 James Sherley says he has been ... stem cell technology since his days as a principal investigator ... the late 1990’s. Sherley founded the ASCTC as a ... all the intellectual property developed in Sherley’s research over the ... Institute of Technology (MIT), and more recently as a senior ...
Breaking Biology Technology:Internationally recognized health scientist Dr. Harvey Clewell renews association with ENVIRON 2Internationally recognized health scientist Dr. Harvey Clewell renews association with ENVIRON 3Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 2Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 3Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 4Fragrance Ingredients Market worth $17,104.21 Million by 2019 - New Report by MarketsandMarkets 5Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 2Naltrexone HCL Market & Nalbuphine HCL Industry Analysis for Global, China Regions Now at DeepResearchReports.com 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 2Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 3Boston’s Adult Stem Cell Technology Center, LLC Introduces A New Technology for Monitoring Previously Elusive Adult Stem Cells 4
... Aug. 29 Pharmos Corporation,(Nasdaq: PARS ) ... will,cease operations in Rehovot, Israel, and manage those ... US headquarters in Iselin, New,Jersey., The research ... library,of compounds, including preclinical development of PRS-639,058 for,neuropathic ...
... SAN DIEGO, Aug. 28 Orexigen(R) Therapeutics,Inc. (Nasdaq: ... central nervous system disorders, including obesity, today announced,that the ... BioCentury Newsmakers in the Biotech Industry ... Millennium Broadway Hotel, New York, UBS Global Life ...
... Enerkem Inc., a leading second,generation biofuels technology ... Vice-Presidents to its executive team: Mr. Denis ... Labrie,Vice-President, Government Affairs and Communications., "I ... to our management,team," said Mr. Vincent Chornet, ...
Cached Biology Technology:Pharmos Corporation Announces That it Will Cease Operations in Israel 2Enerkem Expands Executive Management Team 2
Request Info...
... Concentration Basement Membrane Extract Cultrex HC20+ ... vivo applications where higher protein concentrations ... strength, and elevated levels of tumor ... of lot-to-lot consistency and controlled protein ...
mitochondrial proteins (human heart) for SDS-polyacrylamide gel electrophoresis *2 mg/mL*...
...
Biology Products: