Steven Potter, a biomedical engineer at the University of Georgia, and DeMarse’s former supervisor, created in 2002 the Hybrot or “hybrid robot” a cup-sized robot controlled by an array of rat neurons grafted to silicon electrodes. The robot moves around in response to infrared signals that it converts into movement using a combination of its sensors and its “living” brain.
But until now, no one had written algorithms that harnessed neuronal responses to fly a plane. The ultimate aim is to put arrays of neurons into unmanned planes or other dangerous situations where only living brain cells can be relied upon to make the right decisions.
DeMarse’s array of 25,000 interconnected neurons were able to convert signals that indicated whether the simulated plane is experiencing stable conditions or hurricanes into a measurement of whether the plane is flying straight or tilted and then correct the flight path by transmitting signals to the airplane’s controls.3
When the system is first engaged, the neurones dont know how to control the aeroplane; they dont have any experience. [But] over time, these stimulations modify the networks response such that the neurones slowly [over the course of 15 minutes] learn to control the aircraft, he said. The end result is a neural network that can fly the plane to produce relatively stable straight and level flight. 4
The research is another step in one of the hottest areas of science these days. Computer wizards and biologists and neurologists around the world are trying to fabricate artificial brains, or neural networks, that can function on a human scale, taking over such tasks as piloting rescue aircraft into enemy territory.
There have been various reports of partial success. A team of Russian scientists claimed recently to have created an artificial brain that functions on a human level, although that claim has been met with broad skepticism in the west.
Most claims are far more modest, although it is clear that a marriage between neurology, or the study of the human brain, and high speed computers is leading into territory that sounds more like science fiction than fact. Some experts have warned that incredibly smart machines might someday leave the rest of us in the dust, usurping our self-appointed role as the most important creatures on the planet, if not the universe.5
2 UF scientist: Brain in a dish acts as autopilot, living computer, University of Florida press release, 21 Oct 2004, at http://www.eurekalert.org/pub_releases/2004-10/uof-us102104.php; Original news release can be found at http://www.napa.ufl.edu/2004news/braindish.htm.
3 Brain cells, NewScientist.com.
Kevin J. Crosby, "Brain Implants," SkewsMe.com, at http://www.skewsme.com/implants.html (retrieved: 25 March 2011).
"Mad Scientist Department: Lab-grown neurons to control the grid," SmartGridNews.com, 18 April 2013, at http://www.smartgridnews.com/artman/publish/Projects_R_D/Mad-Scientiest-Department-Lab-grown-neurons-to-control-the-grid-5696.html/ (retrieved: 1 May 2013).
Skin cells from the tails of mice were turned into neurons able to form connections crucial to brain function, a study said. The Stanford University scientists who performed the feat said it should work with human tissue.