I'm not really sure how it would be implemented (though i can think of a couple methods), but I cannot imagine there isn't a way to utilize reconstructive properties of biological matter, having "logic gates" that interpret the interplay of electrical currents which we create.
We're already capable of using electrodes to analyze and transmit data to and from the brain. I've also heard that we have software that model the brain to such accuracies that people base their research almost entirely off of the firings simulated by it.
Here's an article which might spur the imagination:
![Posted Image](http://www.wired.com/magazine/wp-content/images/17-11/mf_optigenetics_w.jpg)
Algae and Light Help Injured Mice Walk Again.
Perhaps I'm a dreamer, but what we may accomplish is something any dreamer cannot help but gaze at in wonder.
Edited by mentatpsi, 09 January 2010 - 10:51 PM.