Navigation Links
MIT: Mimicking the brain, in silicon
Date:11/15/2011

CAMBRIDGE, Mass. For decades, scientists have dreamed of building computer systems that could replicate the human brain's talent for learning new tasks.

MIT researchers have now taken a major step toward that goal by designing a computer chip that mimics how the brain's neurons adapt in response to new information. This phenomenon, known as plasticity, is believed to underlie many brain functions, including learning and memory.

With about 400 transistors, the silicon chip can simulate the activity of a single brain synapse a connection between two neurons that allows information to flow from one to the other. The researchers anticipate this chip will help neuroscientists learn much more about how the brain works, and could also be used in neural prosthetic devices such as artificial retinas, says Chi-Sang Poon, a principal research scientist in the Harvard-MIT Division of Health Sciences and Technology.

Poon is the senior author of a paper describing the chip in the Proceedings of the National Academy of Sciences the week of Nov. 14. Guy Rachmuth, a former postdoc in Poon's lab, is lead author of the paper. Other authors are Mark Bear, the Picower Professor of Neuroscience at MIT, and Harel Shouval of the University of Texas Medical School.

Modeling synapses

There are about 100 billion neurons in the brain, each of which forms synapses with many other neurons. A synapse is the gap between two neurons (known as the presynaptic and postsynaptic neurons). The presynaptic neuron releases neurotransmitters, such as glutamate and GABA, which bind to receptors on the postsynaptic cell membrane, activating ion channels. Opening and closing those channels changes the cell's electrical potential. If the potential changes dramatically enough, the cell fires an electrical impulse called an action potential.

All of this synaptic activity depends on the ion channels, which control the flow of charged atoms
'/>"/>

Contact: Caroline McCall
cmccall5@mit.edu
Massachusetts Institute of Technology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Some vocal-mimicking animals, particularly parrots, can move to a musical beat
2. Wildlife Conservation Society finds wild cat mimicking monkey calls
3. Boston Univ., Veterans Affairs find sports brain trauma may cause disease mimicking ALS
4. Mimicking nature, water-based artificial leaf produces electricity
5. Mimicking nature at the nanoscale: Selective transport across a biomimetic nanopore
6. Changing fine structure constant, packing spheres tighter, and mimicking complex birdsongs
7. Social interactions can alter gene expression in the brain, and vice versa
8. Knee injuries may start with strain on the brain, not the muscles
9. Experimental drug shows promise against brain, prostate cancers
10. UR study reveals chemos toxicity to brain, possible treatment
11. Regular aerobic exercise is good for the brain, Pitt team says
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/31/2014)... the National Science Foundation (NSF), counters a widely-held ... warming, indicating instead that certain Arctic lakes store ... atmosphere. , The study, published this week ... thermokarst lakes, which occur as permafrost thaws and ... water, converting what was previously frozen land into ...
(Date:7/31/2014)... that biomass burning burning forests to create ... slash-and-burn agriculture and wildfires figures into both ... the release of a new study by Stanford ... Jacobson, the degree of that contribution had never ... a paper published July 30 in the ...
(Date:7/31/2014)... hidden hazard lurks beneath many of the roughly ... The hazard is corrosion in parts of underground ... leaks and contamination of groundwater, a source of ... nine states have reported many rapidly corroding gas ... incidents are generally associated with use of gasoline-ethanol ...
Breaking Biology News(10 mins):Certain Arctic lakes store more greenhouse gases than they release 2Stanford professor finds that wildfires and other burns play bigger role in climate change 2Stanford professor finds that wildfires and other burns play bigger role in climate change 3Stanford professor finds that wildfires and other burns play bigger role in climate change 4NIST corrosion lab tests suggest need for underground gas tank retrofits 2
... Salk Institute for Biological Studies and Iowa State University ... role in the production of seed oils, substances important ... Scoring a rare scientific hat trick, the researchers ... ( Arabidopsis thaliana ) that regulate the metabolism of ...
... of the University,s Faculty of Biological Sciences are working with ... of molecular signatures that will help identify the severity of ... team is barcoding different strains of influenza virus and human ... onset of asthma in young children. "Diseases such as ...
... China BGI, the world,s largest genomics organization, in ... the genome sequence and analysis of foxtail millet ( ... millet. This study provides an invaluable resource for the ... crops at a genome-wide level. Results of the latest ...
Cached Biology News:Discovery of plant proteins may boost agricultural yields and biofuel production 2Discovery of plant proteins may boost agricultural yields and biofuel production 3Virus 'barcodes' offer rapid detection of mutated strains 2BGI reports the completed sequence of foxtail millet genome 2
(Date:8/1/2014)... 2014 One of the major revolutions taking ... which is the practice of using genomic and other ... individual biology. Personalized diagnostics—laboratory analyses that inform the practice ... lab,s future. This fall, AACC ,s first ever ... in this exciting field and the novel technologies driving ...
(Date:8/1/2014)... August 1, 2014 According to ... "Biophotonics Market - Global Industry Analysis, Size, Share, Growth, ... valued at USD 25.16 billion in 2013, which is ... at a CAGR of 10.4% from 2014 to 2020. ... http://www.transparencymarketresearch.com/biophotonics-market.html Increasing demand for accurate early ...
(Date:8/1/2014)... Canada (PRWEB) August 01, 2014 Once ... should it cost? This webinar will discuss how to ... , Join speakers Bob Allen, Senior Director of ... of Process Engineering at Fluor Industrial Services, and special ... Manufacturing Asset Planning at Amgen, as they provide an ...
(Date:8/1/2014)... -- Cambrex Corporation (NYSE: CBM ) reports results ... Highlights , Second quarter sales increased 59% ... last year. , Second quarter EBITDA increased 86% to ... last year (see table at the end of this release). ... impact of foreign currency, to between 13% and 16% over ...
Breaking Biology Technology:First-Ever AACC Virtual Conference to Focus on Personalized Diagnostics 2Global Biophotonics Market is Expected to Reach USD 50.20 Billion in 2020: Transparency Market Research 2Global Biophotonics Market is Expected to Reach USD 50.20 Billion in 2020: Transparency Market Research 3Global Biophotonics Market is Expected to Reach USD 50.20 Billion in 2020: Transparency Market Research 4Defining Low Cost in Your Solution for Future Facilities, New Webinar for Pharma, Biotech, Medical Device and Healthcare Companies, Hosted by Xtalks 2Cambrex Reports Second Quarter 2014 Financial Results 2Cambrex Reports Second Quarter 2014 Financial Results 3Cambrex Reports Second Quarter 2014 Financial Results 4Cambrex Reports Second Quarter 2014 Financial Results 5Cambrex Reports Second Quarter 2014 Financial Results 6Cambrex Reports Second Quarter 2014 Financial Results 7Cambrex Reports Second Quarter 2014 Financial Results 8Cambrex Reports Second Quarter 2014 Financial Results 9Cambrex Reports Second Quarter 2014 Financial Results 10Cambrex Reports Second Quarter 2014 Financial Results 11Cambrex Reports Second Quarter 2014 Financial Results 12Cambrex Reports Second Quarter 2014 Financial Results 13Cambrex Reports Second Quarter 2014 Financial Results 14Cambrex Reports Second Quarter 2014 Financial Results 15Cambrex Reports Second Quarter 2014 Financial Results 16
... 23 AMDL, Inc. (Amex: ADL,- News), ... Shenzhen,Jiangxi and Jilin, China, through its wholly ... international biopharma company that,engages in the development, ... products. The Company announced today that,the recent ...
... based at the University of Pittsburgh have created the ... a single molecule wide, a significant step in science,s ... devices to the single molecule scale and provide smaller, ... published online Sept. 26 in the Journal of the ...
... long been touted as the wonder material of the ... fast computers and ultra small electronics through to materials ... diamond. , Several techniques have been devised for ... from the laboratory to the marketplace is obstructed by ...
Cached Biology Technology:AMDL Presentation of China Success Story from Rodman & Renshaw Annual Healthcare Conference Available at WallStreetReporter.com 2Carbon nanotubes to be replaced by MoSIx nanowires in high-tech devices says new study 2
Purified anti-Fanconi anemia D2-Phosphorylated (Ser222)...
A431 cells stimulated with EGF Source: Cell Lysate Form: Ready to Use Application: Western Blotting Control...
... 'The Gene Construction KitTM allows graphic ... drawing options. It has an award winning ... DNA sequences in addition to providing sophisticated ... GCK was named the "Best Plasmid Mapping ...
... collects data from balances and scales with RS232 ... other program. If you can type the weight ... collection process Simple to use parser extracts ... , Add user information , Collect data at ...
Biology Products: