Nov
23
2009

Cognitive computing

Reverse engineering the brain
Reverse engineering the brainCourtesy Thomas Schultz

Engineering computers that can think

Even simple brains, like those in a mouse, are amazing. A brain the size of a thimble that requires almost no energy, can navigate through mazes, survive in severe weather, or escape from a cat. Will we ever create a computer capable of such adaptable and creative "thinking"? One approach is to reverse engineer the brain of a mouse, rat, or cat.

Computer simulation achieves cat brain complexity

Dharmendra S. Modha is a team leader at IBM who is attempting to understand and build such a brain as cheaply as possible. Their latest achievement is a brain simulation with 1 billion spiking neurons and 10 trillion individual learning synapses.

Synapses are the key

Synapses are junctions between neurons and a key to how a brain learns. The strength of the chemical reactions within the synapses changes as the animal interacts with the environment These synaptic junctions are thought to encode our individual experience.

The problem with today's computers

Regular computer architecture has a separation between computation and memory.

“Surely there must be a less primitive way of making big changes in the store than by pushing vast numbers of words back and forth through the von Neumann bottleneck. Not only is this tube a literal bottleneck for the data traffic of a problem, but, more importantly, it is an intellectual bottleneck that has kept us tied to word-at-a-time thinking instead of encouraging us to think in terms of the larger conceptual units of the task at hand. Thus programming is basically planning and detailing the enormous traffic of words through the von Neumann bottleneck, and much of that traffic concerns not significant data itself, but where to find it.”

DARPA's SyNAPSE program

The goal of a DARPA program known as SyNAPSE (Systems of Neuromorphic Adaptive Plastic Scalable Electronics) is to create new electronics hardware and architecture that can understand, adapt and respond to a a changing environment.

What is cognitive computing?

Cognitive computing is the quest to engineer mind-like intelligent machines by reverse-engineering the computational function of the brain.

There is no definition or specification of the human mind. But, we understand it as a collection of processes of sensation, perception, action, cognition, emotion, and interaction. Yet, the mind seems to integrate sight, hearing, touch, taste, and smell effortlessly into a coherent whole, and to act in a context-dependent way in a changing, uncertain environment. The mind effortless creates categories of time, space, and object, and interrelationships between these.

Learn more about cognitive computing

No votes yet

Your Comments, Thoughts, Questions, Ideas

ARTiFactor's picture
ARTiFactor says:

Cat fight

Neuroscientist Henry Markham says Darpa’s Simulated Cat Brain Project a ‘Scam’.

“What IBM reported is a scam — no where near a cat-scale brain simulation,” he writes in an open letter to Bernard Myerson, IBM’s Chief Technology Officer. “I am absolutely shocked at this announcement. Not because it is any kind of technical feat, but because of the mass deception of the public.” Click to read more in Wired

posted on Tue, 11/24/2009 - 2:10pm
Anonymous's picture
Anonymous says:

really wow first ive heard of it...sucks though...ibmers r suposed to help the planet

posted on Tue, 11/24/2009 - 2:20pm
ARTiFactor's picture
ARTiFactor says:

The Blue Brain project mentioned by Henry Markram is explained in a Wall Street Journal article. (click the link to learn lots more)

posted on Tue, 11/24/2009 - 2:48pm

Post new comment

The content of this field is kept private and will not be shown publicly.
  • Allowed HTML tags: <a> <h3> <h4> <em> <i> <strong> <b> <span> <ul> <ol> <li> <blockquote> <object> <embed> <param> <sub> <sup>
  • Lines and paragraphs break automatically.
  • You may embed videos from the following providers vimeo, youtube. Just add the video URL to your textarea in the place where you would like the video to appear, i.e. http://www.youtube.com/watch?v=pw0jmvdh.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Images can be added to this post.

More information about formatting options