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 W├╝rzburg 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:5/27/2015)...   Codonics (codonics.com), a global ... documentation solutions and Omnicell  (omnicell.com), a ... is pleased to announce their state of ... System® (SLS), an award-winning FDA class 2 ... Anesthesia Workstation, helps prevent medication errors, streamlines ...
(Date:5/25/2015)... 25, 2015  Australia,s market for wearable technologies is ... saw the advent of several trials and prototypes. The ... is expected to ignite interest in wearables as well ... Australia . This in turn will spur greater ... new partnerships amongst vendors and distributors. ...
(Date:5/22/2015)... , May 22, 2015 According ... by Solution (2D, 3D, Thermal, Emotion, Forensic), by Software (Middleware, ... (Government and Utilities, Consumer and Home) - Global Forecast ... grow from $2.77 Billion in 2015 to $6.19 Billion ... Browse 79 market data Tables and   43 ...
Breaking Biology News(10 mins):Codonics and Omnicell Expand Partnership 2Codonics and Omnicell Expand Partnership 3Codonics and Omnicell Expand Partnership 4Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 2Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 3Australian wearables market to grow at CAGR of 78%; revenue of A$1 billion by 2018, says Frost & Sullivan 4Facial Recognition Market Worth $6.19 Billion by 2020 2Facial Recognition Market Worth $6.19 Billion by 2020 3
... New York, NYDecember 7, 2011Thanks to a new ... be able to diagnose in their offices non-periodic ... Non-periodic arrhythmias include atrial and ventricular fibrillation, which ... can in some cases be life-threatening. ...
... are moving to higher elevations because of climate change, but ... new study by Duke University researchers. The study, published ... finds that the birds aren,t migrating as rapidly as scientists ... The animals instead may be tracking changes in vegetation, which ...
... of physicians and scientists at Barrow Neurological Institute, in ... first-of-its-kind biography of Ukranian anatomist and histologist Vladimir Betz. ... Betz and a New Era of Neuroscience," appears in ... Brain . Among other contributions, Vladimir Alekseyevich Betz ...
Cached Biology News:New Columbia engineering technique diagnoses non-periodic arrhythmias in a single heartbeat 2Climate change driving tropical birds to higher elevations 2
(Date:5/29/2015)... Delcath Systems, Inc. (NASDAQ: DCTH ... focused on oncology with an emphasis on the ... that results of a large, European single-center experience ... hepatic metastases with the Delcath Hepatic CHEMOSAT ® ... abstract at the American Society of Clinical Oncology ...
(Date:5/29/2015)... 29, 2015  Caris Life Sciences® today announced ... which researchers utilized Caris Molecular Intelligence®, the company,s ... therapeutic targets in patients with colorectal and pancreatic ... cell death protein 1 (PD-1) and its ligand, ... the 2015 American Society of Clinical Oncology Annual ...
(Date:5/29/2015)... , May 28, 2015 Research ... addition of Jain PharmaBiotech,s new report "Cytogenetics ... offering. This report deals with cytogenetics ... use mainly to describe the chromosome structure and ... of molecular biology, it is also referred to ...
(Date:5/29/2015)... MILWAUKEE, WISCONSIN (PRWEB) May 29, 2015 ... oncolytic virus talimogene laherparepvec and its ability to reduce ... the treatment have been published in the Journal of ... 436 patients with stages IIIB, IIIC and IV melanoma, ... goal of the study was to evaluate the safety ...
Breaking Biology Technology:Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 2Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 4Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 5Multi-Platform Molecular Profiling from Caris Life Sciences Identifies Clinically Actionable Targets for Novel Immunotherapy Drugs 2Multi-Platform Molecular Profiling from Caris Life Sciences Identifies Clinically Actionable Targets for Novel Immunotherapy Drugs 3Multi-Platform Molecular Profiling from Caris Life Sciences Identifies Clinically Actionable Targets for Novel Immunotherapy Drugs 4Global Cytogenetics Market Report 2015-2024 - Technologies, Markets and Companies 2Global Cytogenetics Market Report 2015-2024 - Technologies, Markets and Companies 3Study Published in Journal of Clinical Oncology Reports Talimogene Laherparepvec Improvesdurable Responses in Patients with Advanced Melanoma 2
... , SEATTLE, June 30 Cell Therapeutics, Inc. ("CTI") (Nasdaq and ... Russell 3000(R), Russell 2000(R) and Russell Global(R) Indexes posted by Russell ... Russell Investments reconstitutes its family of U.S. and global equity ... reconstitution of Russell,s U.S. indexes captures the 4,000 largest U.S. stocks ...
... Centocor Ortho Biotech Inc. announced today that a federal ... Laboratories in a patent infringement suit. , , "We ... in the patent litigation case against Abbott," said Kim Taylor, ... relates to the company,s anti-TNF class of arthritis treatments, and ...
... LYNBROOK, N.Y., June 29 BioSpecifics Technologies Corp. (Nasdaq: ... collagenase-based products, announced today that it was added to the ... of the U.S. markets on June 29, 2009. The Russell ... to be a comprehensive representation of the investable U.S. equity ...
Cached Biology Technology:Cell Therapeutics Added to Russell 3000(R), Russell 2000(R) and Russell Global(R) Indexes 2Cell Therapeutics Added to Russell 3000(R), Russell 2000(R) and Russell Global(R) Indexes 3Centocor Ortho Biotech Inc. Awarded $1.67 Billion Patent Jury Verdict from Abbott Laboratories 2BioSpecifics Technologies Corp. Added to Russell 3000 and Russell 2000 Indexes 2
... White walled plates enhance luminescent ... and fluorescence,• Not treated (or medium ... nature and binds biomolecules through passive ... immobilization of large molecules, such as ...
BD Falcon microtest assay plate. 1536 well 12l, black, flat-bottom PS. Polystyrene, nonsterile, no lid. (15/sp, 60/ca) Packaging: 15 / pack, 60 / case ...
... solution for all plate washing needs in both ... ,The PW 384 provides an excellent solution for ... Discovery (Assay development, Screening or Lead Optimization) and ... ,The PW 384 has set a standard for ...
... is a compact benchtop and stackable ... controller with a large display screen ... speed. Air circulation inside to evenly ... can be easily calibrated from the ...
Biology Products: