First DNA-based Artificial Neural Network

Caltech researchers have demonstrated a small, four-cell neural network capable of simple problem-solving. This DNA-based artificial neural network uses DNA strand displacement cascades to recognize patterns in molecular events.


(DNA-based artificial neural network)

The neural network is made up of just four artificial neurons, as opposed to the human brain's 100 billion real ones.

To test the network, the scientists played a game with it. That game started with the network being trained to "know" four scientists, each one identifiable by a unique combination of yes/no answers to the same four questions (such as "Is the scientist British?"). Human players then chose one of those scientists, and provided the network with an incomplete set of the identifying answers. They did this by dropping DNA strands that were programmed to correspond to those answers, into water in a test tube that contained the neurons.

Communicating through fluorescent signals, the network would then either correctly identify the chosen scientist, it would indicate that it didn't have enough data to identify just one scientist, or it would state that the data didn't match any of the scientists.

This technology may one day give us intellectual cells like the ones in Greg Bear's excellent 1984 novel Blood Music:

His first E. coli mutations had had the learning capacity of planarian worms; he had run them through simple T-mazes, giving sugar rewards. They had soon outperformed planaria... Removing the finest biologic sequences from the altered E. coli, he had incorporated them into B-lymphocytes, white cells from his own blood...Using artificial proteins and hormones as a means of communication, Vergil had "trained" the lymphocytes in the past six months to interact as much as possible with each other and with their environment - a much more complex miniature glass maze.

For now, the computational process is not quite up to the speed of silicon; the network takes about eight hours to respond.

From Nature via Gizmag.

Scroll down for more stories in the same category. (Story submitted 7/24/2011)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Artificial Intelligence ")

LipNet Reads Lips - Until Disconnected, That Is
'We'd have to cut his higher brain functions... I'm not sure what [HAL} would think about that.' - Arthur C. Clarke, 1968.

Pokerbot Libratus Learns To Lie (Bluff)
'Lying's a vital part of your psychological defense system - you're naked without it!' - Red Dwarf

Software Learns To Design Software
'... The rational use of computers to design more advanced computers.' - Isaac Asimov, 1958.

China Now Has Robot Journalists
'A vast complex electronic organism buried deep in the ground, responsible to no one...' - Philip K. Dick, 1963.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Keith Laumer's Bolo Autonomous Tanks Right On Schedule
'I cannot lie idle under attack.'

When Computers Develop Their Own Language, Will They Talk To Us?
'The curious absent look of a robot talking on the TBR circuits - the Talk Between Robots radio...'

LipNet Reads Lips - Until Disconnected, That Is
'We'd have to cut his higher brain functions... I'm not sure what [HAL} would think about that.'

Eterni.me - To Skype With The Dead
'Nothing... left of Jeserac but a galaxy of electrons frozen in the heart of a crystal.'

Wearable MRI Is Former Occulus/Facebook Exec's New Project
'Your cephalochromoscope... that you always turn on and play when you get home...'

Ford Stratasys Infinte Build 3D Printer
'He proudly indicated his Buick... Almost as good as the original it was printed from...'

The Space Suit As Personal Spaceship
'Darn clever, these suits...'

Dune Fans! Your God Emperor Is Ready
'If one held a sandtrout in the hand, smoothing it over your skin, it formed a living glove.'

Robot Strolls Field, Examines EVERY Plant
'The great machines that did the work ... required but a few dozen men to cultivate an entire county.'

Sweden Outlaws Drones
'An eye that could not only see, but fly, roam, travel at speeds and in directions to suit its operator...'

Wear Your Self-Powered Generator
'It's basically a micro-sandwich...'

TITAN-III Spider Robot Is WAY Too Quick (Video)
'My little friends can find you wherever you go!'

Bill Gates Suggests Tax On Robots
'A worker replaced by a nubot that 'appears or pretends to be human' had to be compensated...'

Handle, New Wheeled Hopping Robot
'the hopper sprang thirty feet into the air...'

Matrix Sentinel Ancestor, The Pipe Inspector Robot From Krakow
Watch out, Keanu!

Auto-Focus Smart Glasses Have Liquid Lenses
'Hufhuf oil held in static tension by an enclosing force field within a viewing tube...'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.