[CAT] "IBM takes a (feline) step toward thinking machines"

[rfmcdonald]

Meow.

[T]his week researchers from IBM Corp. (IBM-N127.54-0.61-0.48%) are reporting that they've simulated a cat's cerebral cortex, the thinking part of the brain, using a massive supercomputer. The computer has 147,456 processors (most modern PCs have just one or two processors) and 144 terabytes of main memory — 100,000 times as much as your computer has.

The scientists had previously simulated 40 per ent of a mouse's brain in 2006, a rat's full brain in 2007, and 1 per cent of a human's cerebral cortex this year, using progressively bigger supercomputers.

The latest feat, being presented at a supercomputing conference in Portland, Ore., doesn't mean the computer thinks like a cat, or that it is the progenitor of a race of robo-cats.

The simulation, which runs 100 times slower than an actual cat's brain, is more about watching how thoughts are formed in the brain and how the roughly 1 billion neurons and 10 trillion synapses in a cat's brain work together.

[. . .]

Jim Olds, a neuroscientist and director of the Krasnow Institute for Advanced Study at George Mason University, called the new research a “tremendous step.” Olds, who was not involved in IBM's work, said neuroscientists have been amassing data about how the brain works much like “stamp collectors,” without a way to tie it together.

“We've made tremendous advances in collecting data, but we don't have a collective theory yet for how this complex organ called the brain produces things like Shakespeare's sonnets and Mozart's symphonies,” he said. “The holy grail for neuroscientists is to map activity from single nerve cells, which they know about, into how billions of nerve cells act in concert.”

Mr. Modha says a simulation of a human cortex could come within the next decade if Moore's Law holds. That's the rule of thumb that the number of transistors on a computer chip tends to double every two years.