Navigation Links
Researchers identify neurons that assign value during learning

By using an experimental trick to activate certain sets of neurons and effectively substitute activation of these cells for positive or negative experiences, researchers have been able to identify neurons in the fruit fly Drosophila that are responsible for assigning value to stimuli during so-called associative learning. The findings, which advance our understanding of how, at the cellular level, we learn to associate cues with positive and negative experiences, are reported by Andre Fiala and colleagues at the University of Würzburg in Germany and appear in the September 5th issue of Current Biology, published by Cell Press.

During associative learning, animals learn to change their behavior in response to a particular stimulus that would otherwise have a neutral influence on behavior. For example, if an animal such as a fruit fly learns to associate a particular odor with a punishing stimulus, the odor itself can become repulsive. Conversely, an odor associated with a reward can become attractive. Despite its relatively modest brain complexity, the fruit fly larva is able to perform such associative-learning tasks. Because of its neuronal simplicity and the fact that it can be genetically manipulated, the fruit fly offers a favorable study case to address a principal question in the field of learning and behavior: Which neurons attribute attractive or aversive values to so-called neutral stimuli, such as odors, in the course of associative learning?

Past work had indicated that certain neurotransmitters played key roles in assigning attractive or aversive values to neutral stimuli--for example, neurons expressing dopamine are required for aversive learning, whereas neurons expressing another neurotransmitter, octopamine, are required for appetitive learning (association of a stimulus with a reward). However, it was unclear whether a common set of neurons were responsible, or whether attractive and aversive values were assigned to neutral stimuli
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Researchers discover way to make cells in the eye sensitive to light
2. Researchers find how protein allows insects to detect and respond to pheromones
3. Researchers Uncover Key Step In Manufacture of Memory Protein
4. Researchers reveal the infectious impact of salmon farms on wild salmon
5. Researchers identify target for cancer drugs
6. Researchers discover molecule that causes secondary stroke
7. Researchers find missing genes of ancient organism
8. Researchers trace evolution to relatively simple genetic changes
9. Researchers add new tool to tumor-treatment arsenal
10. UF Researchers Map Bacterial Proteins That Cause Tooth Loss
11. VCU Researchers Identify Networks Of Genes Responding To Alcohol In The Brain
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Researchers identify neurons that assign value during learning

(Date:10/16/2014)... Conn. , October 16, 2014 NXT-ID, ... or the "Company"), a biometric authentication company focused on ... its leading edge technologies including Wocket™, the Smart Wallet, ... (FiRe) Conferenece. FiRe is a leading global conference on ... Hosted by Mark Anderson , founder and ...
(Date:10/15/2014)... the pandemic risk from strains of influenza virus increases ... ourselves to become complacent that the most substantial threats ... , Influenza pandemics arise when a new virus strain ... immunity – spreads in the human population. There have ... the worst of which – the 1918 Spanish Flu ...
(Date:10/15/2014)... Gauß-Allianz has admitted Johannes Gutenberg University Mainz (JGU) ... science hub continues to maintain a significant nationwide ... , "The acceptance of Johannes Gutenberg University Mainz ... a milestone in the national and international competition ... state of Rhineland-Palatinate can be proud that Mainz ...
Breaking Biology News(10 mins):NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3Scientists 'must not become complacent' when assessing pandemic threat from flu viruses 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3
... Is microwave radiation the nondestructive imaging technology of the ... (GHz) up to slightly over 1 terahertz (THz), penetrate ... damage caused by X-rays. The technology could be used ... the enamel. It could also be a valuable tool ...
... European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, and ... revealed new insights into how sex chromosomes are regulated. ... that males have only one copy of the sex ... between male and female sex chromosomes in fruit flies ...
... have come together to announce funding for new projects ... in the emerging field of synthetic biology. The Biotechnology ... and Physical Sciences Research Council (EPSRC) have awarded funding ... UK researchers to build links across institutions and discipline ...
Cached Biology News:How to make microwaves on a chip to replace X-rays for medical imaging and security 2X chromosome exposed 2New projects to raise UK profile in synthetic biology 2
(Date:10/22/2014)... Involution Studios , a healthcare software design ... Understanding Ebola . The goal of the ... follow informative tool for anyone wanting to know more ... , "As the news has spread in all directions ... not only a healthcare crisis with global impact, but ...
(Date:10/22/2014)... October 22, 2014 Physicians Choice ... cardiovascular pharmacogenetics menu, which enables healthcare providers to ... With PCLS’s evidence-based results, healthcare providers are better ... their therapy, while minimizing risks for adverse drug ... according to the FDA [1] more than 2.2 ...
(Date:10/22/2014)... NEW YORK , Oct. 22, 2014 ... Diabetes Federation, approximately 400 million people worldwide are living ... 552 million people by 2030.  The global market for ... In 2012 approximately 330,000 people worldwide died from pancreatic ... of death due to cancer in the ...
(Date:10/20/2014)... YORK , Oct. 20, 2014 ... their experimental ZMapp™ antibody therapeutic to fight the ... how difficult and time-consuming the production of pharmaceuticals ... market research publisher said that while some may ... of this compound, those with industry knowledge are ...
Breaking Biology Technology:Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 2PCLS Announces Expansion of Cardiovascular Pharmacogenetic Testing Menu 3Nuvilex Brief Analyst Report: Thinking Outside the Box by BrokerBank Securities, Inc. 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 2Kalorama: ZMapp Highlights Need For Faster Biopharmaceutical Production 3
... GAITHERSBURG, Md., Oct. 5 Iomai Corporation,(Nasdaq: IOMI ... and chief executive officer, will present at the Natixis,Bleichroeder ... October 8.,Mr. Erck,s presentation will begin at 2:45 p.m. ... Carlton Hotel. To access the live audio webcast ...
... Calif., Oct. 5 Bionovo, Inc.,(Nasdaq: BNVI ), a ... in the areas of women,s health and cancer, today announced,that ... at the 4th,Annual BIO Investor Forum. The presentation will ... the Palace Hotel in San Francisco, CA. A live ...
... PLYMOUTH MEETING, Pa., Oct. 5 Genaera,Corporation (Nasdaq: ... will be,presenting at two upcoming conferences, Biotech 2007 ... InvestorForum in San Francisco on October,9-11, 2007. ... Chief Scientific,Officer of Genaera, is scheduled to participate ...
Cached Biology Technology:Genaera to Present at Biotech 2007 and BIO InvestorForum 2Genaera to Present at Biotech 2007 and BIO InvestorForum 3
... Basic Package Superior Protein Detection and ... ProXPRESS 2D Proteomic Imaging System is a ... proteomic and general life science research applications. ... use of all dyes in the UV ...
... for the first time, you can identify ... more efficiently without interferences. The Agilent Multiple ... unwanted, multiple high-abundant proteins from human serum, ... just one device. With this revolutionary system, ...
... Arrays are intended for laboratory research use ... in neutral buffered formalin and embedded in ... performed by certified pathologists. Tissue cores ... relocated into a new recipient paraffin block, ...
... requiring confocal, the BD Pathway 415 is ... 435. And, the Pathway 415 can be ... it. High-performance, laser-based autofocus ... the laser autofocus, camera autofocus, or a ...
Biology Products: