Navigation Links
Researchers identify brain's 'eureka' circuitry
Date:1/23/2008

Researchers have found the brain region that controls the decision to halt your midnight exploration of the refrigerator and commence enjoyment of that leftover chicken leg. Whats more, they said, such mechanisms governing exploration are among those that malfunction in addiction and mental illness.

Emmanuel Procyk and colleagues published their findings in the January 24, 2008, issue of the journal Neuron, published by Cell Press.

In their experiments, the researchers presented monkeys with a choice of touch targets on a computer screen, requiring the monkeys to spend time exploring which target would trigger a juice reward. Once the monkeys discovered the reward target, the researchers then gave the animals a period during which they could repeatedly touch the reward target to obtain more juice.

During the trials, the researchers recorded the electrical activity of hundreds of neurons in the anterior cingulate cortex (ACC), a brain region known to be active in adaptive behaviors such as the shift between exploring and exploiting.

In their analysis, the researchers measured the electrophysiological activity of cells during four different types of feedbackincorrect choices, first reward, repetition of the reward, and the ending of a trial by breaking fixation on the targets.

Analyzing the results, the researchers concluded that Our data show that ACC discriminates between different types of feedback, allowing appropriate behavioral adaptations.

They wrote that Thus, the function we attribute to ACC activations is clearly not only to evaluate feedbacks but is also to participate in monitoring the different steps of the task at hand to optimize action adaptation and valuation. A dysfunction of these mechanisms represents the core feature of cognitive alterations observed in addiction and mental illness.

Wrote Procyk and colleagues, The ACC produces signals that discriminate between various behaviorally relevant positive and negative feedbacks, suggesting a role in triggering appropriate adaptations. Our data reinforce the proposal that ACC is important for establishing action valuations. But they also emphasize a combined role in monitoring events/actions for behavioral regulation when task control is high, underlining the intimate link between control and action valuation.


'/>"/>

Contact: Cathleen Genova
cgenova@cell.com
617-397-2802
Cell Press
Source:Eurekalert

Related medicine news :

1. Stanford researchers find culprit in aging muscles that heal poorly
2. UCLA researchers identify markers that may predict diabetes in still-healthy people
3. Mayo Clinic researchers discover new diagnostic test for detecting infection in prosthetic joints
4. Bipolar disorder relapses halved by Melbourne researchers
5. Cell that triggers symptoms in allergy attacks can also limit damage, Stanford researchers find
6. High and mighty: first common height gene identified by researchers behind obesity gene finding
7. Researchers estimate about 9 percent of US children age 8 to 15 meet criteria for having ADHD
8. Majority of 2.4 Million U.S. Children With ADHD Not Diagnosed or Consistently Treated, According to New Gold Standard Study by Cincinnati Childrens Researchers
9. Researchers develop long-lasting growth hormone
10. Jefferson immunology researchers halt lethal rabies infection in brain
11. Purdue researchers develop technology to detect cancer by scanning surface veins
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... 2017 , ... Global Healthcare Management’s 4th Annual Kids Fun Run brought out ... free event, sponsored by Global Healthcare Management’s CEO, Jon Letko, is aimed at getting ... children of all ages; it is a non-competitive, non-timed event, which is all about ...
(Date:10/13/2017)... ... 2017 , ... “America On The Brink”: the Christian history of the United ... the creation of published author, William Nowers. Captain Nowers and his wife, Millie, ... spent thirty years in the Navy. Following his career as a naval aviator ...
(Date:10/12/2017)... ... 12, 2017 , ... IsoComforter, Inc. ( https://isocomforter.com ), one of ... innovative new design of the shoulder pad. The shoulder pad provides optimal support ... your pain while using cold therapy. By utilizing ice and water that is circulated ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... HMP ... the recipient of a 2017 Folio Magazine Eddie Digital Award for ‘Best B-to-B Healthcare ... City on October 11, 2017. , The annual award competition recognizes editorial and design ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... in property taxes a year. In some states—like New York, New Jersey, Massachusetts, ... contrast, many overseas retirement havens have extremely low property-tax rates, which contributes to ...
Breaking Medicine News(10 mins):
(Date:9/12/2017)... , Sept. 12, 2017   EcoVadis , the leading platform for ... the first annual edition of its Global CSR Risk and Performance Index. ... by EcoVadis, based on Scorecard Ratings that analyzed nearly 800,000 data points ... ... ...
(Date:9/12/2017)...  ValGenesis Inc., the global leader in Enterprise ... announce the appointment of Dr. Ajaz Hussain ... Directors and Chairman of Advisory Board beginning September ... to manage their entire validation lifecycle process electronically ... process. Furthermore, ValGenesis VLMS enables rigorous compliance, helps ...
(Date:9/9/2017)... , Sept. 8, 2017 Dealmed Medical Supplies, ... supplier of medical equipment, supplies, drugs, vaccines, and specialty ... entered into an agreement to acquire Vantage Medical Supplies, ... in Holtsville, New York . ... supplying new and emerging medical practices, will operate under ...
Breaking Medicine Technology: