Navigation Links
Math that powers spam filters used to understand how brain learns to move our muscles

A team of biomedical engineers has developed a computer model that makes use of more or less predictable “guesstimates” of human muscle movements to explain how the brain draws on both what it recently learned and what it’s known for some time to anticipate what it needs to develop new motor skills.

The engineers, from Johns Hopkins, MIT and Northwestern, exploited the fact that all people show similar “probable” learning patterns and use them to develop and fine tune new movements, whether babies trying to walk or stroke patients re-connecting brain-body muscle links.

In their report this week in Nature Neuroscience, the team says their new tool could make it possible to predict the best ways to teach new movements and help design physical therapy regimens for the disabled or impaired.

Reza Shadmehr, Ph.D., professor of biomedical engineering at Hopkins, who with his colleagues built the new model, says the artificial brain in the computer, like its natural counterpart, is guided in part by a special kind of statistical “probability” theory called Bayesian math.

Unlike conventional statistical analysis, a Bayesian probability is a subjective “opinion,” that measures a “learner’s” individual degree of belief in a particular outcome when that outcome is uncertain. The idea as applied to the workings of a brain is that each brain uses what it already knows to “predict” or “believe” that something new will happen, then uses that information to help make it so.

“We used the idea that prior experience and belief affect the probability of future outcomes, such as taking an alternate route to work on Friday because you’ve experienced heavy traffic Tuesday, Wednesday and Thursday and believe strongly that Friday will be just as bad,” says Shadmehr. E-mail spam filters operate on a similar principle; they predict which key words are “probably” attached to mail you don’t want and “learning” as they go to fine tune what t
'"/>

Source:Johns Hopkins Medical Institutions


Page: 1 2

Related biology news :

1. UNC scientists solve mystery of how largest cellular motor protein powers movement
2. UCSB scientists probe sea floor venting to gain understanding of early life on Earth
3. Zebrafish may hold key to understanding human nerve cell development
4. Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells
5. Researchers make gains in understanding antibiotic resistance
6. Brain-mapping technique aids understanding of sleep, wakefulness
7. New understanding of DNA repair may pave way to cancer treatments
8. NYU and MSKCC research provides model for understanding chemically induced cancer initiation
9. Virologists make major step towards understanding the process of HIV infection
10. New understanding of cell movement may yield ways to brake cancers spread
11. Proteomics brings researchers closer to understanding microbes that produce acid mine drainage
Post Your Comments:
(Date:8/27/2014)... PITTSBURGHLearning a new skill is easier when it is ... a trained pianist might learn a new melody more ... , Neural engineers from the Center for the Neural ... of Pittsburgh and Carnegie Mellon Universityhave discovered a fundamental ... happens. Published as the cover story in the Aug. ...
(Date:8/27/2014)... greatest risk to Europe based upon a proxy for ... using a ,big data, approach to scientific research. , ... Global Health ranked the top 100 pathogens affecting humans ... system which, they believe, will help governments across the ... infectious diseases, including as a result of climate change, ...
(Date:8/27/2014)... that exists as five strains, none of which have ... the Sudan ebolavirus (SUDV). Although not the strain currently ... as recently as 2012. In a new study appearing ... now report a possible therapy that could someday help ... Sidhu, Jonathan Lai and colleagues explain that about 50-90 ...
Breaking Biology News(10 mins):Pitt and Carnegie Mellon engineers discover why learning can be difficult 2Pitt and Carnegie Mellon engineers discover why learning can be difficult 3Big data approach identifies Europe's most dangerous human and domestic animal pathogens 2Potential therapy for the Sudan strain of Ebola could help contain some future outbreaks 2
... of Princeton biologists and engineers has dramatically improved the speed ... influences almost every aspect of how cells and tissues function. ... cells, cancer and other problems of fundamental importance to biology ... look at a special class of proteins called histones, which ...
... National Institute of Environmental Health Sciences (NIEHS), part of ... in understanding the potential health, safety and environmental issues ... everyday products such as sunscreens, cosmetics and electronics. The ... period, through the American Recovery and Reinvestment Act, to ...
... saliva to tell whether those stiff joints, memory lapses, and ... for disease, scientists are describing how the protein content of ... to a simple, noninvasive test for better diagnosing and treating ... in ACS, Journal of Proteome Research , a monthly ...
Cached Biology News:Beyond genomics, biologists and engineers decode the next frontier 2Beyond genomics, biologists and engineers decode the next frontier 3NIEHS awards Recovery Act funds to focus more research on health and safety of nanomaterials 2NIEHS awards Recovery Act funds to focus more research on health and safety of nanomaterials 3NIEHS awards Recovery Act funds to focus more research on health and safety of nanomaterials 4
(Date:8/27/2014)... Research and Markets  has announced ... (Biodegradable Polymer, Food & Beverage, Personal Care & ... report to their offering. Lactic ... asymmetrical carbon atom. The main applications of lactic ... beverage, personal care product, and pharmaceutical industries. ...
(Date:8/27/2014)... , Aug. 27, 2014 Guggenheim Securities, the ... today announced the hiring of veteran equity analyst Charles ... analyst. Mr. Butler will focus on the biotech/biopharma sector. ... a wealth of experience and a broad network of ... Senior Managing Director and Head of Equities at Guggenheim ...
(Date:8/27/2014)... , Aug. 27, 2014 Research ... "Global Stable Isotope Ratio Mass Spectrometer Industry Report 2014" ... Global Stable Isotope Ratio Mass Spectrometer Industry Report 2014 ... state of the global isotope ratio mass spectrometer industry. ... the industry including definitions, classifications, applications and industry chain ...
(Date:8/27/2014)... (PRWEB) August 27, 2014 BIOEQUA, an ... through the use of a handheld spray, has made ... United States. , The brand began with an ... researchers were surprised to learn that the application of ... extremely small and delivered directly to skin's basal layer. ...
Breaking Biology Technology:Global Lactic Acid (Biodegradable Polymer, Food & Beverage, Personal Care & Pharmaceutical) Market - Trends & Forecasts to 2019 2Guggenheim Securities Hires Analyst Charles "Tony" Butler to Expand Healthcare Coverage 2Global Stable Isotope Ratio Mass Spectrometer Industry Report 2014 2BIOEQUA'S EQUA ESSENTIAL Product Line Redefines Skin Care & Now Available in America 2
... Isolation Kit , Catalog #732-6370 , ... Cell Lysis , 1. Vigorously add ... (or other tube rated for high speed) containing 500 l body fluid , ... whole blood). , 2. Vortex for 5 sec to mix thoroughly. , ...
... , Patrick M. Gaffney, Elizabeth A. Orbacz, and Ziniu Yu, ... University of Delaware, Lewes, Delaware., , ... DNA polymorphisms are useful tools for ecological and evolutionary ... with applications ranging from , species identification to ...
... Amutan and David Batey, Ph.D., , ... Real-time quantification was performed for lambda and ... DyNAzyme II DNA polymerase*,was used for amplification, and SYBR Green I fluorescent dye ... was tested for ranges,of 100 to 1x10 8 initial copies of lambda ...
Cached Biology Technology:Total RNA Isolation From 500 l Body Fluid 2Using the DCode System to Identify DNA Sequence Variation for Studies of Population Structure in Marine Organisms 2Using the DCode System to Identify DNA Sequence Variation for Studies of Population Structure in Marine Organisms 3Using the DCode System to Identify DNA Sequence Variation for Studies of Population Structure in Marine Organisms 4Using the DCode System to Identify DNA Sequence Variation for Studies of Population Structure in Marine Organisms 5Using the DCode System to Identify DNA Sequence Variation for Studies of Population Structure in Marine Organisms 6Using the DCode System to Identify DNA Sequence Variation for Studies of Population Structure in Marine Organisms 7Using the DCode System to Identify DNA Sequence Variation for Studies of Population Structure in Marine Organisms 8Real-Time Quantification of Genomic DNA Using DyNAzyme II DNA Polymerase and SYBR Green I Dye 2Real-Time Quantification of Genomic DNA Using DyNAzyme II DNA Polymerase and SYBR Green I Dye 3Real-Time Quantification of Genomic DNA Using DyNAzyme II DNA Polymerase and SYBR Green I Dye 4Real-Time Quantification of Genomic DNA Using DyNAzyme II DNA Polymerase and SYBR Green I Dye 5Real-Time Quantification of Genomic DNA Using DyNAzyme II DNA Polymerase and SYBR Green I Dye 6Real-Time Quantification of Genomic DNA Using DyNAzyme II DNA Polymerase and SYBR Green I Dye 7Real-Time Quantification of Genomic DNA Using DyNAzyme II DNA Polymerase and SYBR Green I Dye 8
... interface. All the functionality of the micro1401 ... memory and more available channels of waveform ... an option for programmable front-end gain. Can ... 48 waveform inputs and from 4 to ...
... reagent is used to inhibit ... fluorescence microscopy. The unique formulation ... wide variety of fixed specimens ... rhodamine, sulforhodamine 101, coumarin, DAPI, ...
Anti-Conjugated Quinaldic Acid...
... and 96 well plates. microCLEAN is an extremely ... half spin DNA cleanup reagent. It can be ... of double stranded DNA, efficiently removing reaction buffers, ... unlabelled). It is therefore ideally suited to clean ...
Biology Products: