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:10/16/2014)... have challenged conventional thinking on how the bowel lining ... for how bowel cancer starts. , The researchers produced ... regenerating the ,crypts, that are a feature of the ... in bowel cancer development, a controversial finding as scientists ... Using 3D imaging technologies, Dr Chin Wee Tan and ...
(Date:10/16/2014)... causes severe respiratory tract infections and worldwide claims ... at VIB and Ghent University have succeeded in ... common virus infection. , Xavier Saelens (VIB/UGent): ... the way for the development of a novel ... causes suffering in numerous small children and elderly ...
(Date:10/16/2014)... -- NXT-ID, Inc. (NASDAQ: NXTD and ... focused on the growing mobile commerce market announces that ... Smart Wallet, at the 13 th annual Future ... conference on the intersection of technology and the economy. ... founder and publisher of the Strategic News Service™, the ...
Breaking Biology News(10 mins):Cryptic clues drive new theory of bowel cancer development 2New perspectives for development of an RSV vaccine 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3
(Date:10/19/2014)... 2014 The Latin American hardware encryption ... Latin America with analysis and forecast of revenue. This ... is expected to reach $2,366.8 million by 2018, at ... Browse through the TOC of the Latin American hardware ... in-depth analysis provided. It also provides a glimpse of ...
(Date:10/19/2014)... (PRWEB) October 19, 2014 The Asian ... in Asian with analysis and forecast of revenue. The ... grow to around $463.9 million by 2018, at a ... Browse through the TOC of the Asian Automatic patient ... analysis provided. This also provides a glimpse of the ...
(Date:10/19/2014)... October 19, 2014 The report ... & Homeland Security), Technology, Payload, Type & by ... segments the global unmanned ground vehicle market into ... forecasting of market sizes. The report also identifies ... opportunities impacting it along with the adoption trends. ...
(Date:10/18/2014)... The report "1,6-Hexanediol Market by Application ... 2019", analyzes the global market on the basis ... industry details such as the key drivers, current ... , Browse 81 Market Data Tables and 29 ... on “1,6-Hexanediol Market by Application and by Geography ...
Breaking Biology Technology:The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 2Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 3Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 4Unmanned Ground Vehicle (UGV) Market Estimated to Reach $8.26 Billion by 2020 - New Research Report by MarketsandMarkets 51,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 21,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 31,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 41,6-Hexanediol Market Projected to Reach $916.1 Million at a CAGR of 8.3% by 2019 – Report by MarketsandMarkets 5
Cached News: