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:10/14/2014)... DURHAM, N.C. – Like discriminating thieves, prostate cancer tumors ... in the body. But such avarice may be a ... found a way to kill prostate cancer cells by ... that selectively destroys the diseased cells brimming with the ... which uses two drugs already commercially available for other ...
(Date:10/14/2014)... is how to produce enough food to feed the ... Agriculture Organization of the United Nations predicts that food ... to feed a growing global population, and plants are ... production. Plants—grains, cereals, fruits, vegetables, and more—feed humans ... must tap into our knowledge of how plants work ...
(Date:10/14/2014)... A team of scientists led by researchers at ... the University of Miami Miller School of Medicine ... genetic pathway underlying bipolar (manic depressive) disorder, a ... treating bipolar affective disorder, as well as depression ... findings, published online this week in Nature ...
Breaking Biology News(10 mins):Prostate cancer's penchant for copper may be a fatal flaw 2Building a bridge from basic botany to applied agriculture 2Building a bridge from basic botany to applied agriculture 3Rare genetic disease protects against bipolar disorder 2Rare genetic disease protects against bipolar disorder 3
... the University Hospital and the Center for Applied Medical ... an article in Nature Cancer Reviews , one ... cancer studies. The article, written by Ignacio Melero and ... States and Great Britain, addresses the use of a ...
... This week's BMJ investigates a bitter row over a ... scrutiny once again. , The dispute has pitted a ... Cha, a fertility specialist and one of the most ... writes journalist Jonathan Gornall. It is also threatening to ...
... are obese don’t really know they are overweight, researchers have ... published by Cell Press. These findings in obese mice show ... critical fat hormone—causing a cascade of events that keeps energy ... metabolic pathway remains ready to respond. , “Obesity is not ...
Cached Biology News:Researchers from the University of Navarra analyze new kinds of cancer-fighting antibodies 2Row over study puts Korea's scientific community under scrutiny again 2In obesity, brain becomes 'unaware' of fat 2In obesity, brain becomes 'unaware' of fat 3
(Date:10/19/2014)... OCTOBER 20-22, 2014: The 9th ... will take place at the Congress Center ... is now available at http://www.abim.ch . ... organizations from all over the globe will ... latest products and developments on the world ...
(Date:10/19/2014)... 19, 2014 The Asia-Pacific Speech Analytics ... in Asia-Pacific with analysis and forecast of revenue. This ... 2014 to $208 million by 2019, at a Compound ... 2019. , Browse through the TOC of the Asia-Pacific ... the in-depth analysis provided. It also provides a glimpse ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 According ... Products (Access Points; WLAN Controllers; Wireless gateways)]- Global ... and segments the global Outdoor Wi-Fi market with ... this report MarketsandMarkets also identifies the drivers and ... on the trends, opportunities and challenges. , Browse ...
(Date:10/18/2014)... The Asian arthroscopic devices report defines and ... forecast of revenue. The arthroscopic devices market in Asia ... at a CAGR of 6.5% from 2013 to 2018. ... devices market, to get an idea of the in-depth ... segmentation of arthroscopic devices market in the same region, ...
Breaking Biology Technology:The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 2The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 3The Asia-Pacific Speech Analytics market is estimated to reach $208 million by 2019 - New Report by MicroMarket Monitor 4Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 2Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 3Outdoor Wi-Fi Market (by Access Points, WLAN Controllers, Wireless gateways) Expected to Cross $37.2 Billion by 2018 - New Report by MarketsandMarkets 4The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 2The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 3The Asian arthroscopic devices market is estimated to grow to $712.3 million by 2018 - New Report by MicroMarket Monitor 4
... April 4 /PRNewswire-FirstCall/ - ProMetic Life Sciences ... Rohwer, Pathogen,Removal and Diagnostics Technology Inc.,s ("PRDT") ... Research Scientist will present at,the American Chemical ... from April 6 - 10, 2008. Drs ...
... /Xinhua-PRNewswire-FirstCall/ -- WuXi,PharmaTech (Cayman) Inc. (NYSE: ... and medical device research and development,outsourcing company ... States, today,announced that it has filed a ... and Exchange Commission for a proposed follow-on ...
... FRANCISCO, Calif., and SINGAPORE, April 4, 2008 /PRNewswire/,-- ... on the,discovery and development of monoclonal antibody therapeutics ... today announced a,collaboration to advance the discovery of ... of the agreement, Raven will license its proprietary,whole ...
Cached Biology Technology:Prometic to present at the American Chemical Society 2Prometic to present at the American Chemical Society 3Prometic to present at the American Chemical Society 4WuXi PharmaTech (Cayman) Inc. Announces Filing of Registration Statement For Follow-On and Secondary Offering 2Raven biotechnologies and Bioprocessing Technology Institute Announce Collaboration to Advance Discovery of Stem Cell Antibodies 2
... system from Molecular Devices provides precise dispensing ... The system handles a variety of plate ... and 1536-welland is the first to handle ... optimized to dispense from four different channels ...
... ProteinPilot Software enables you to ... Now you can distinguish protein isoforms, ... You can also visualize peptide-protein associations ... ideal for protein identification and relative ...
... ( Abpromise for all tested ... Synthetic peptide: VEEESFGPQPISRLE conjugated to KLH, ... 15-29 of Human Rad51 ... Swiss Protein ID: ...
Rabbit polyclonal to Esa1 ( Abpromise for all tested applications)....
Biology Products: