Navigation Links
CSHL neuroscientists glimpse how the brain decides what to believe
Date:8/11/2008

lations, the researchers sought a way to demonstrate whether such calculations informed the rats' behavior. They ran a series of olfaction trials that featured an important modification of the original task design. As in the first set of trials, rats made decisions involving the discrimination of two smells; they were rewarded, after a defined period of delay, if they decided correctly, and received nothing if their decision was incorrect.

In the modified task, the reward delay was increased substantially. However, while waiting for the reward, the rats were given the option to abort the trial short of learning whether their decision was right or wrong and return to the beginning to start a new trial. "This new option to abort and restart constitutes a decision that should be made based on the level of confidence about getting a reward," Kepecs said. This is similar to the decision to make a u-turn when not finding the restaurant in the example above: whether and when you will turn back depends on how confident you are about the decision made at the crossroads.

Kepecs and Mainen surmised that if the rats were not confident about their original decision about the smell, they would be more likely to abort the trial. "Ultimately, confidence about getting a reward is a direct function of the animals' confidence about the decision they have just made. In this way we sought to measure a variable internal to the animals how confident they were about whether they made the right choice or not by observing how it influenced their behavior."

The researchers did indeed find that rats preferentially aborted uncertain trials. This showed that they could not only calculate their level of confidence in a given decision, but also use that calculation in subsequent decisions to guide behavior.

Taken together, these experiments reveal "that confidence estimation is not a complex function specific to humans but a core component of the process of
'/>"/>

Contact: Peter Tarr
tarr123@gmail.com
516-367-8455
Cold Spring Harbor Laboratory
Source:Eurekalert

Page: 1 2 3 4

Related medicine news :

1. Neuroscientists show insulin receptor signaling regulates structure of brain circuits
2. QBI neuroscientists make Alzheimers disease advance
3. Jefferson neuroscientists find early lead exposure impedes recovery from brain injury
4. Jefferson neuroscientists show anti-inflammation molecule helps fight MS-like disease
5. Vinson Hall Retirement Community Offers Glimpse into the Future of Retirement with Unique Innovative Model of Living
6. New Insight Into Most Common Forebrain Malformation
7. New insight into most common forebrain malformation
8. Childhood brain tumor traced to normal stem cells gone bad
9. A new light on the brains of people with borderline personality disorder
10. Protein Key to Brain Rewiring
11. Leading Neurosurgical Center in Moscow Purchases CyberKnife System to Expand Ability to Treat Brain and Spinal Tumors
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/30/2014)... mutation that causes a rare premature aging disease could ... rapid, unstoppable cell division that makes cancer so deadly. ... the U-M Health System recently discovered a protein mutation ... precious hematopoietic stem cells can,t regenerate and make new ... to cancer and bone marrow failure. , But ...
(Date:9/30/2014)... FDA-approved injectable dermal fillers (i.e. hyaluronic ... in several procedures that are performed to restore ... primarily used for wrinkle treatment of the skin, ... are being used as popular treatments in nonsurgical ... the hands. (1) (2) Dr. Cynthia Elliott of ...
(Date:9/30/2014)... Mirada, CA (PRWEB) September 30, 2014 ... Cortes is now performing advanced foot and ankle reconstruction ... a board-certified orthopedic surgeon, Dr. Cortés specializes in the ... and ankle injuries . She is also trained to ... with their orthopedic needs. Dr. Cortés is also fluent ...
(Date:9/30/2014)... September 30, 2014 To mark National ... Board of Living with a Disability magazine ... on hematological disorders as disabling conditions. , ... than a diagnosis to establish a disability related to ... myelofibrosis, hereditary telangiectasia, coagulation defects, polycythemia vera, and aplastic ...
(Date:9/30/2014)... Jiwa Law Corporation, a personal injury law ... now be offering free consultation for personal injury claims of ... firm for the first time to meet the Vancouver ICBC ... opportunity to understand what their rights are. The experts at ... to explain to them what the law firm can do ...
Breaking Medicine News(10 mins):Health News:Disease decoded: Gene mutation may lead to development of new cancer drugs 2Health News:Nonsurgical Cosmetic How-To: Skinspirations Details Proper Use of FDA-Approved Injectable Fillers for Hand Rejuvenation Procedures 2Health News:Nonsurgical Cosmetic How-To: Skinspirations Details Proper Use of FDA-Approved Injectable Fillers for Hand Rejuvenation Procedures 3Health News:Nonsurgical Cosmetic How-To: Skinspirations Details Proper Use of FDA-Approved Injectable Fillers for Hand Rejuvenation Procedures 4Health News:Fellowship-Trained and Board-Certified Orthopedic Specialist Now Performing Advanced Foot & Ankle Reconstruction Surgeries 2Health News:Fellowship-Trained and Board-Certified Orthopedic Specialist Now Performing Advanced Foot & Ankle Reconstruction Surgeries 3Health News:Living with a Disability Magazine Marks National Sickle Cell Health Month with New Article on Hematological Disorders 2Health News:Living with a Disability Magazine Marks National Sickle Cell Health Month with New Article on Hematological Disorders 3Health News:Jiwa Law Corporation Now Offers Personal Injury Consultation Without Any Charge 2
... Reporter , THURSDAY, March 15 (HealthDay News) -- ... or depressed, their children are more likely to develop ... What,s more, the worse the parents scored on ... to develop the problems. "The psychological well-being ...
... (March 16, 2012) An international team of researchers from ... Center in Tampa, Fla., have found that the oral BRAF ... trial offered a high rate of response in patients with ... More than 50 percent of the patients in the trial ...
... biotechnological and chemical methods will facilitate efficient production of ... Academy of Finland Centre of Excellence (CoE) in White ... and development of microbial cells, or cell factories, for ... These compounds can be used, for example, for manufacturing ...
... FRIDAY, March 16 (HealthDay News) -- Being unable to ... deadly outcome for older people, new research reveals. ... 52 and older, who completed a test of functional ... to understand health-related information. Specifically, the test assessed a ...
... the risk of death in patients who have a ... depressed patients were 1.5 times more likely to have ... age, gender, clinical characteristics, anxiety and the distressed (Type ... 12th Annual Spring Meeting on Cardiovascular Nursing , ...
... , THURSDAY, March 15 (HealthDay News) -- Politicians may want ... for votes, because people appear to prefer candidates with deep ... men and women who listened to recordings of high- and ... this November." Both the male and female participants "elected" ...
Cached Medicine News:Health News:Stressed Parents May Affect Preemie Behavior Later 2Health News:Stressed Parents May Affect Preemie Behavior Later 3Health News:Response rate high for some patients with metastatic melanoma treated with vemurafenib 2Health News:Novel plastics and textiles from waste with the use of microbes 2Health News:Poor Reading Skills Might Be Fatal for Older Folks 2Health News:Depression increases death risk in coronary stent patients 2
(Date:9/30/2014)... , Sept. 30, 2014 One week after World ... milestone: Alzheimer,s Team reaches over 200,000 supporters. ... caregivers, was developed to draw attention to clinical trials, ... It also provides inspirational support and fosters online engagement ... the leading healthcare concern for people over the age ...
(Date:9/30/2014)... , Sept. 30, 2014 Headquartered in ... is a diversified company comprised of several specialized partners ... technology and the proven expertise of its team of ... wellness. WholeHealth Products, line of more than 10 professional ... and its more than 8 retail consumer tests is ...
(Date:9/30/2014)... N.Y. , Sept. 30, 2014  Millennium ... Millennium Medical Devices, has executed a sales, marketing ... Florida based provider of ... Accountable Care Organizations (ACOs) and hospitals through a ... serves over 10,400 active Physician Purchasing Accounts that ...
Breaking Medicine Technology:MediciGlobal's Alzheimer's Community Reaches 200,000 likes and more than half a million weekly visitors 2MediciGlobal's Alzheimer's Community Reaches 200,000 likes and more than half a million weekly visitors 3MediciGlobal's Alzheimer's Community Reaches 200,000 likes and more than half a million weekly visitors 4WholeHealth Products Announces The Discovery Of The "Autism And Fragile X" Microwell And Rapid Diagnostic Test 2Millennium Healthcare Secures New Sales, Marketing and Distribution Agreement 2Millennium Healthcare Secures New Sales, Marketing and Distribution Agreement 3
... Arizona Alliance for Chronic Care (AACC) , an assembly ... complex medical conditions such as cancer, multiple sclerosis, hemophilia, ... a small win with the advancement of SB 1401. ... SB 1401 protects patients from new, unfair out-of-pocket costs ...
... the leader in heart rate monitoring and fitness assessment technologies, ... Technology Supplier" for U.S. Soccer through 2013.  ... national and international events, including the London 2012 Olympic and ... used to help these nine National Teams gain a competitive ...
Cached Medicine Technology:Legislation to Keep Life-saving Drugs Affordable Advances to the Senate Floor 2Legislation to Keep Life-saving Drugs Affordable Advances to the Senate Floor 3Polar Named Official Heart Rate Technology Supplier of U.S. Soccer Federation 2Polar Named Official Heart Rate Technology Supplier of U.S. Soccer Federation 3
... In addition to three conventional measurement modes ... also incorporates a new axial length measuring ... by calculating sonic velocity for conversion at ... length by calculating each tissues sonic velocity ...
... first very high frequency digital ultrasound eye ... provides microscopic resolution images and precision measurement ... of the human eye. Artemis is a ... In use, the patient leans forward placing ...
... 1000 is the most advanced ophthalmic ultrasound ... operates with a single Macintosh desktop or ... a streamlined internal probe rotator. Every aspect ... The UltraFast 12 MHz B-probe operates on ...
... a combination A-scan and B-scan system, providing ... incorporates a high frequency, low noise probe ... capture immediately upon application of the probe ... the axial length of both eyes differ ...
Medicine Products: