HOME >> BIOLOGY >> NEWS
Worth the wait? A neural mechanism related to impulsive decision-making

Researchers at the Ruhr-University Bochum in Germany and the University of Otago in Dunedin, New Zealand, have identified single neurons in the pigeon forebrain that play a role in controlling impulsive decisions--in the pigeons' case, the preference for a small, immediate reward over a large, delayed reward.

In contrast to assumptions made by many economic theories, decisions by humans and other animals are often not rational, and their actions are not always exclusively directed toward the maximization of gain. A prominent example of such sub-optimal choice behavior is impulsive decision-making, in which case an immediate but disadvantageous reward may be preferred over a delayed but more advantageous reward.

In their new work, Tobias Kalenscher and colleagues trained pigeons to choose between a small and a large reward. At the beginning of a session, both rewards were delivered immediately after the choice was made, but the delivery of a large reward was increasingly delayed as the session progressed. At first, pigeons preferred the large reward, but once the preceding delay exceeded a critical threshold of duration, they switched to preferring the small but fast reward. Reward preference in this task therefore depended on both reward amount and time-to-reward. Using single-cell electrophysiological recordings from freely moving pigeons, the authors provided evidence that single neurons in the avian forebrain showed increased activity in anticipation of an upcoming reward. This reward-related activation was greater when the pigeons expected a large reward than when they expected a small one. But most importantly, the degree of activation decreased as the delay between the choice and the large reward increased, until this degree of activation dropped below that of activation related to the expectance of a small reward. This drop in neural activation coincided with the pigeons' preference shift from the large, delayed reward to the small, fast rewar
'"/>

Contact: Heidi Hardman
hhardman@cell.com
1-617-397-2879
Cell Press
11-Apr-2005


Page: 1 2

Related biology news :

1. Regulating alternative splicing during neural development
2. New insights into the neural basis of anxiety
3. Left-right wiring determined by neural communication in the embryonic worm
4. Neuronal differentiation of human neural stem cell grafts in adult rat spinal cord
5. Detailed 3-D image catches a key regulator of neural stem cell differentiation in action
6. Mysterious neural noise actually primes brain for peak performance
7. Dartmouth researchers find a neural signature of bilingualism
8. Making a face: A new and earlier marker of neural crest development
9. Carnegie Mellon study identifies impact of neural connections in learning process
10. New insights into neural tube defects
11. Figuring out the ups and downsand sidewaysof neural development

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Worth the wait neural mechanism related impulsive decision making

(Date:8/25/2015)... SALT LAKE CITY and BELLEVUE, ... a global leader in advanced robotic systems, announced today ... first-of-its-kind robotic unmanned ground vehicle (UGV), at the National ... Lake City.  The Guardian S is ... is the culmination of years of research and in-field ...
(Date:8/20/2015)... 2015   Sensory, Inc ., a Silicon ... experience and security of consumer electronics through state-of-the-art ... its TrulySecure™ is the first multimodal ... FIDO Certified™. The FIDO (Fast Identification ... FIDO UAF (Universal Authentication Framework) 1.0 specifications, which ...
(Date:8/18/2015)... 17, 2015 Research and Markets ( ... "Global Biometric Authentication & Identification Market: Focus ... Forecast, 2015-2020" report to their offering. ... systems market is expected to grow at an ... and generate over $25 billion (approximately) by 2020 ...
Breaking Biology News(10 mins):Sarcos to Debut First-of-its-Kind Snake Robot 2Sarcos to Debut First-of-its-Kind Snake Robot 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 2TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 3TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 4TrulySecure From Sensory Becomes First Face and Voice Biometrics Technology to be FIDO UAF Certified 5Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2
(Date:8/31/2015)... , Aug. 31, 2015 Research and ... the "Israel Biomedical Sensors Market - Growth, Trends ... The Israel Biomedical Sensors market is estimated ... 3.73% over the period 2014-2020 The near ... the genetic formulation of each individual. These sensors can ...
(Date:8/31/2015)... SYDNEY , Aug. 31, 2015  US-Australian ... NVGN ) today confirmed its comprehensive scientific ... ground-breaking technology platforms in areas of unmet patient ... through the remaining preclinical projects prior to entering ... lead compounds. Acting Chief Executive Officer, ...
(Date:8/31/2015)... ... August 31, 2015 , ... Regulatory agencies have acknowledged ... development approval process. Thus, innovator companies must understand what will be needed in ... CMO, has been hosting multiple educational panels and seminars for experts to share ...
(Date:8/28/2015)... 2015 Research and Markets ... "Global & USA BioSimilar Market Analysis to 2021" ... awaited US Biosimilar market will be initiated in September ... How will the global market react? Will biosimilars explode ... could save the US economy up to $250 billion ...
Breaking Biology Technology:Israel Biomedical Sensors Market 2015 - Growth, Trends & Forecasts to 2020 2Novogen Announces The Outcome Of A Comprehensive Science Review 2Novogen Announces The Outcome Of A Comprehensive Science Review 3Novogen Announces The Outcome Of A Comprehensive Science Review 4Novogen Announces The Outcome Of A Comprehensive Science Review 5Novogen Announces The Outcome Of A Comprehensive Science Review 6Regis Shares Expert Advice on Impurities in Drug Development 2Regis Shares Expert Advice on Impurities in Drug Development 3Global & USA BioSimilar Market Analysis Report 2015-2021 2Global & USA BioSimilar Market Analysis Report 2015-2021 3
Cached News: