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:9/2/2014)... All human cells contain essentially the same DNA sequence ... shapes and functions of cells in the different parts ... DNA contains the same construction master plan, an additional ... possible DNA programs are active. This mechanism involves modifications ... small chemical groups (e.g. methylation). It acts on top ...
(Date:9/2/2014)... the most ideal source of nutrition for infants ... in the evolution and civilizations of human beings. ... large number of bacterial species, including some opportunistic ... surprise to scientists and physicians. , Indeed, the ... the result of co-evolutionary and co-adaptive interactions between ...
(Date:9/2/2014)... as perching birds, that migrate by night tend to ... to reach their destinations. This seasonal difference in flight ... short migratory flights, says researcher Cecilia Nilsson of Lund ... and Sociobiology . , Nilsson, in a group ... to measure over three years the speed by which ...
Breaking Biology News(10 mins):Throwing a loop to silence gene expression 2Are human breast milk microbiome 'neutral'? 2Are human breast milk microbiome 'neutral'? 3Migrating birds sprint in spring, but take things easy in autumn 2
... is to fund research exploring the link between Bisphenol A ... heart disease. The grant is for 119,169. In the ... have suggested that some manmade chemicals might be linked to ... used in some types of plastic containers. A ...
... An award-winning nature essay, written during a USDA Forest ... for nature writing. The essay, "Mind in the Forest," ... Indiana University, stresses the author,s connection with nature, especially ... issue of how humans engage with the natural world. ...
... Plants respond to attacks by herbivores or pathogens by ... the attackers. These defense responses require a great deal ... be invested in growth and reproduction. So, it,s very ... Hormones, such as the jasmonates, are crucial in this ...
Cached Biology News:Nature essay made possible by Forest Service program, is Orion Magazine selection 2Biologists discover an on/off button on plants' alarm system 2
(Date:9/1/2014)... Sept. 1, 2014 Reportlinker.com announces that ... its catalogue: India Solid Waste Management ... http://www.reportlinker.com/p02350445/India-Solid-Waste-Management-Vehicles-Market-Forecast-and-Opportunities-2019.html In ... main governing bodies responsible for complete handling and ... an average, around 135,000 MT solid waste is ...
(Date:9/1/2014)... September 01, 2014 The Collaborative ... Diagnostics report provides comprehensive understanding and unprecedented access ... into by the worlds leading life science companies. ... analysis of how and why companies enter collaborative ... prospective partner’s negotiated deals terms provides critical insight ...
(Date:8/31/2014)... 2014 Available spectra is similar ... research and cultivation of a wide range of ... LEDs with proven patented and pending wide spectrum ... uniformity in critical applications in contrast to growth ... “Our customers have a large variety of differently ...
(Date:8/31/2014)... This is a professional and in-depth ... Hardener industry in Global and China. The ... including definitions, applications and industry chain structure. Global ... provided with a focus on history, developments, trends ... between the international and Chinese situation is also ...
Breaking Biology Technology:India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 2India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 3India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 4India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 5India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 6India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 7India Solid Waste Management Vehicles Market Forecast and Opportunities, 2019 8Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 2Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 3Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 4Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 2Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 3
... Centre leads the way in harnessing private sector for agricultural innovation , ... VINELAND, ON , June 30 ... today issued a response to the G20,s Communiqué to "Harness the private sector ... , , ...
... STOCKHOLM , June 30, 2010 , ... - Agreement Marks Milestone in Pharmalink,s Corporate ... Pharmalink AB, today ... Xepol(R) programme for the,treatment of post-polio syndrome (PPS). The parties had previously announced,reaching an ...
... Danish scientists have used Computer Tomography (CT) and Magnetic ... including alligators, snakes and tarantulas. Images revealed, for ... internal organs in preparation for a big meal and ... scientists think MRI and CT images of animal anatomy ...
Cached Biology Technology:Vineland shows Canadian leadership with response to G20 2Pharmalink AB Closes Deal With Grifols SA for the Acquisition of the Xepol(R) Programme for the Treatment of Post-Polio Syndrome 2Pharmalink AB Closes Deal With Grifols SA for the Acquisition of the Xepol(R) Programme for the Treatment of Post-Polio Syndrome 3Pharmalink AB Closes Deal With Grifols SA for the Acquisition of the Xepol(R) Programme for the Treatment of Post-Polio Syndrome 4Pharmalink AB Closes Deal With Grifols SA for the Acquisition of the Xepol(R) Programme for the Treatment of Post-Polio Syndrome 5Feast and famine: MRI reveals secrets of animal anatomy 2
... For nucleofection of optimized cell lines in ... the nucleofection parameters. Nucleofector Kits are only ... Different cell lines can be transfected with ... are given in brackets in percent (Efficiency ...
... Human Pathogenic Viruses The National ... preserves well characterised, authenticated human ... facility, and NCPV is able ... nucleic acids derived from them, ...
B-FABP (FL-132)...
... a highly purified preparation of the catalytic ... which recognizes the identical cleavage site as ... enzymatic activity (1). Novagen&'s enzyme is produced ... the highest activity available, and is qualified ...
Biology Products: