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:11/6/2014)... an asset for a predator. Except when that predator runs ... beetle, relative to its size, is the fastest creature on ... lengths per second (at about five miles per hour). The ... the sprinting gold from the tiger beetle, a person would ... tiger beetle has a problem. At peak speeds, everything becomes ...
(Date:11/5/2014)... in the UTSA College of Sciences, is one ... receive a two-year $300,00 National Science Foundation (NSF) ... funding supports President Obama,s BRAIN Initiative, a federal ... that will demystify complex brain processes. , ... broken into the interactions of multiple components, each ...
(Date:11/5/2014)... diversity in their ability to identify scents and odors. ... their perceptual evaluation of odors, with women outperforming men ... Sex differences in olfactory detection may play a role ... one,s perception of smell, which is naturally linked to ... been suggested to be cognitive or emotional, rather than ...
Breaking Biology News(10 mins):The tiger beetle: Too fast to see 2UTSA biology professor awarded $300,000 NSF grant for brain research 2UTSA biology professor awarded $300,000 NSF grant for brain research 3The female nose always knows: Do women have more olfactory neurons? 2
... will not only teach us more about the way neurons ... diagnostics and therapies for neurological diseases such as Parkinson,s," says ... take a major toll on society. More than 8% of ... cent suffers from a mental disturbance and the number of ...
... is now leading to breakthroughs in bio nanotechnology research. ... reality. Four years ago, the biologist Karen ... when she started with her team working on it, ... at the Nano-Science Center, her team has been able ...
... the first time, the successful reprogramming of diseased human ... also found differentiation into mature hepatocytes was more efficient ... diseased hepatocyte-derived human iPSC lines provides a good basis ... technology could give a potentially unlimited reservoir of cells ...
Cached Biology News:Skywalker ensures optimal communication between neurons 2From science fiction to research breakthrough 2
(Date:11/21/2014)... 21, 2014 Why did Stephen Hawking ... Einstein so instantly recognizable? Why have they become icons ... and author Hilton Ratcliffe seeks out the answers to ... all to do with science. In " Stephen Hawking ... November 21, 2014), Ratcliffe puts it plainly: , ...
(Date:11/21/2014)... , Nov. 20, 2014  Cytori Therapeutics (NASDAQ: ... Hedrick , M.D. will present live at VirtualInvestorConferences.com on December ... TIME:    11:15 am PT / 2:15 pm ET ... into your browser,s address bar: http://bit.ly/1B2KGaL ... receive event updates. This will be a ...
(Date:11/18/2014)... Urdorf, Switzerland (PRWEB) November 17, 2014 ... range of processes across the pharmaceutical, chemical, and food ... is it so important, and how do pH sensors ... measurement to assist those in process industries with these ... description of pH measurement in the process industries. The ...
(Date:11/18/2014)... November 18, 2014 2014 ... Industry is professional and in-depth report on ... basic information, including its definition, characterization, application, ... outline. This exploration covers the worldwide business ... industry examination covering macroeconomic environment & financial ...
Breaking Biology Technology:“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 2“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 3“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 4Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 2Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 3Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 4pH Guide from METTLER TOLEDO Explains Measurement, Theory and Practice of pH Applications 2PTMEG Market: 2019 Global Polytetrahydrofuran Industry Development Trends & Analysis Now at DeepResearchReports.com 2PTMEG Market: 2019 Global Polytetrahydrofuran Industry Development Trends & Analysis Now at DeepResearchReports.com 3
... South Korean scientists have succeeded in engineering the bacterium ... research, published in the journal Biotechnology and Bioengineering ... this important chemical which is traditionally created using fossil ... is an important platform chemical with a wide range ...
... - Net Profit Up 11%, - Strong Research and Investment Effort, - Positive net ... 25 August 2009 under the chairmanship,of Albert Saporta approved the 2009 half year financial statements: , , In million Euros ... ... %CA, Sales ...
... , , SAN MARINO, ... company that develops drug compounds for HIV/AIDS, autoimmune diseases, and cancer, ... releases distributed by collegestock.com on August 25 and August 26, and ... Reader Grapevine: There,s Something About Viral Genetics, Inc. (VRAL)," on August ...
Cached Biology Technology:Pioneering research succeeds in producing industrially vital chemical through engineered bacteria 2STALLERGENES: 1st Half-Year 2009: Performance Ahead of Expectations 2STALLERGENES: 1st Half-Year 2009: Performance Ahead of Expectations 3STALLERGENES: 1st Half-Year 2009: Performance Ahead of Expectations 4Viral Genetics Responds to Rumors of Imminent FDA Filing and Third Party Press Releases 2Viral Genetics Responds to Rumors of Imminent FDA Filing and Third Party Press Releases 3
... Description: Proteinase K is a ... wide range of applications purified from the fungus ... the carboxyl group of N-substituted hydrophobic aliphatic and ... as a serine protease. Proteinase K is useful ...
... high throughput, water bath thermal cycler capable of ... This equates to 9,216 reactions per run when ... transfers a basket of plates between three water ... considerably faster than those of peltier block cyclers. ...
... Dideoxycytidine Dideoxycytidine is a cytidine analog that ... retroviral activity. Immunogen: Chemical / ... The specificity of the ddC antiserum was ... of ddC to moles of ddC analog at ...
... The Jouan MSC series of Class ... working conditions and certification to the ... regulation ensures that the cabinets cannot ... conditions. Natural lighting, low noise and ...
Biology Products: