Navigation Links
Bad decisions arise from faulty information, not faulty brain circuits
Date:4/15/2013

made mistakes when tallying that information. In the example of choosing a college, the question might be whether a person made a poor choice because of misleading or confusing course descriptions, or because the brain failed to remember which college had the best ratings.

Previous measurements of brain neurons have indicated that brain functions are inherently noisy. The Princeton research, however, separated sensory inputs from the internal mental process to show that the former can be noisy while the latter is remarkably reliable, said senior investigator Carlos Brody, a Princeton associate professor of molecular biology and the Princeton Neuroscience Institute (PNI), and a Howard Hughes Medical Institute Investigator.

"To our great surprise, the internal mental process was perfectly noiseless. All of the imperfections came from noise in the sensory processes," Brody said. Brody worked with first author Bingni Brunton, now a postdoctoral research associate in the departments of biology and applied mathematics at the University of Washington; and Matthew Botvinick, a Princeton associate professor of psychology and PNI.

The research subjects four college-age volunteers and 19 laboratory rats listened to streams of randomly timed clicks coming into both the left ear and the right ear. After listening to a stream, the subjects had to choose the side from which more clicks originated. The rats had been trained to turn their noses in the direction from which more clicks originated.

The test subjects mostly chose the correct side but occasionally made errors. By comparing various patterns of clicks with the volunteers' responses, researchers found that all of the errors arose when two clicks overlapped, and not from any observable noise in the brain system that tallied the clicks. This was true in experiment after experiment utilizing different click patterns, in humans and rats.

The researchers used the timing of the cli
'/>"/>

Contact: Morgan Kelly
mgnkelly@princeton.edu
609-258-5729
Princeton University
Source:Eurekalert

Page: 1 2 3 4

Related biology news :

1. Deciphering bacterial doomsday decisions
2. Study offers new tool for incorporating water impacts into policy decisions
3. Lariats: How RNA splicing decisions are made
4. New evidence that many genes of small effect influence economic decisions and political attitudes
5. Model forecasts long-term impacts of forest land-use decisions
6. Rats recall past to make daily decisions
7. Increasing water scarcity in Californias Bay-Delta will necessitate trade-offs; hard decisions needed to balance various environmental risks
8. UCLA life scientists unlock mystery of how handedness arises
9. Gene sequencing project finds new mutations to blame for a majority of brain tumor subtype
10. Ordinary skin cells morphed into functional brain cells
11. CSHL neuroscientists show jumping genes may contribute to aging-related brain defects
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... DALLAS , November 18, 2014 ... Security Systems Market by Systems (Video, RFID, Access Control, ... (SEZ, Factories, Hotels, Banks, Government), Component Service Geography - ... Security Systems Market is projected to be around $25 ... Billion by 2020, growing at a CAGR of 8.69%. ...
(Date:11/21/2014)... NEW YORK , Nov. 19, 2014  Earlier ... Board at New York College, and one of the ... for biosensor signals that are transmitted from Smartphones to ... there were Smartphones and has one of the earliest ... are discussing its usage in the military, child care, ...
(Date:11/21/2014)... , Nov. 20, 2014 Strict laws against ... are piloting the North American and European automotive sector ... growing, gesture recognition systems that are intuitive and able ... in the industry. New analysis from ... Recognition Market in Europe and ...
Breaking Biology News(10 mins):Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 2Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 3Gesture Recognition Intensifies with the Rise of In-car Smartphone Integration, Says Frost & Sullivan 4
... been shed on proteorhodopsin, the light-sensitive protein found in ... of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) and ... when the ability to respire oxygen is impaired, bacterium ... carry out vital life processes. , ...
... an increased risk of fetal heart problems when mothers ... an abstract presented by Yale School of Medicine researchers ... in San Francisco. , Congenital heart block (CHB) ... heart's electrical signaling from the upper to the lower ...
... system to produce antibodies that act against some essential ... can act against sperm, eggs or reproductive hormones, which ... ova. , Proponents of the technique, which ... as more humane than the conventional methods of controlling ...
Cached Biology News:Shedding new light on proteorhodopsin 2Shedding new light on proteorhodopsin 3Manipulating nature: Scientists query wildlife birth-control method 2
(Date:11/26/2014)... YORK, NOVEMBER 21, 2014 (PRWEB) November 26, 2014 ... largest health-oriented communications network, today announced the organization has ... Annual Rx Club Awards. Digitas Health LifeBrands was honored ... while four other PHCG agencies received eight Awards of ... the creative aspects of pharmaceutical advertising and promotion. The ...
(Date:11/26/2014)... 26, 2014 The North America ... the market for detailed analysis of the growth ... to reach $616.3 million by 2018, growing at ... , Browse through the TOC of the North ... an idea of the in-depth analysis and industry ...
(Date:11/26/2014)... , Nov. 26, 2014 Space is one ... of space requires astronauts to maintain consistently high levels ... and prevent potential errors and accidents. Despite the importance ... about how cognition is affected by prolonged spaceflight, and ... Now, Penn Medicine researchers are poised to help the ...
(Date:11/26/2014)... The ETC (Emerging Technology Centers) ... announced today that applications for AccelerateBaltimore™ (AB) 2015 ... you have a big idea?,” asked ETC’s President ... about it. AccelerateBaltimore helps you and your big ... 13 weeks.” Interested game changers with “big ...
Breaking Biology Technology:Publicis Healthcare Wins 20 Rx Club Awards 2Publicis Healthcare Wins 20 Rx Club Awards 3The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 2Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 3Penn Medicine Team Develops Cognitive Test Battery to Assess the Impact of Long Duration Spaceflights on Astronauts' Brain Function 4AccelerateBaltimore Applications to Close in 6 Days 2AccelerateBaltimore Applications to Close in 6 Days 3
... Back Full Control of Belinostat, Consolidating ... the Global Rights for the Product TopoTarget ... , - Deal Covers a Payment of USD 26 million (DKK ... Payment, - Webcast Conference Call to be Held 2pm CET, ...
... Calif., April 21 Ortho Evra is an adhesive,transdermal birth ... and 20 mcg of ethinyl estradiol into the bloodstream per ... and no patch is worn,during the fourth week. Ortho Evra ... million women have used Ortho Evra since its approval.,Ortho Evra ...
... Pharmacyclics,Inc. (Nasdaq: PCYC ) today announced that ... 17, 2008 indicating that, for the last 30,consecutive ... has closed,below the minimum bid price of requirement ... Nasdaq Global Market under Marketplace Rule 4450(a)(5). In,accordance ...
Cached Biology Technology:TopoTarget Successfully Buys Back Full Control of Belinostat 2TopoTarget Successfully Buys Back Full Control of Belinostat 3TopoTarget Successfully Buys Back Full Control of Belinostat 4TopoTarget Successfully Buys Back Full Control of Belinostat 5TopoTarget Successfully Buys Back Full Control of Belinostat 6TopoTarget Successfully Buys Back Full Control of Belinostat 7Ortho Evra Patch Makers Settling Cases 2
... Chromatograph/Mass Spectrometer, utilizing many of the ... offers high throughput and excellent productivity, ... ratio. Like the GCMS-QP2010 Plus, the ... for optimum separation, 20 temperature ramps, ...
... XS uniquely combines a single-channel sample processing ... 8-channel bulk reagent dispenser all in one ... using disposable pipette tips, the Precision XS ... dispenser is available for transferring larger volumes. ...
... As the world of discovery races ever faster, ... on the fast track. So our constant focus ... accelerate your research. Thats why our Biomek 3000 ... thats as advanced as it is flexible. By ...
... MaxArray Rabbit Tissue Arrays contain 60 rabbit tissue ... package contains 4 unstained slides and 1 hematoxylin ... Each slide contains 15 different tissues from 4 ... samples per slide. Each tissue sample (or core) ...
Biology Products: