interesting but computers are going to make processing power leaps.
I can not imagine brain cells doing any useful practical work outside of the brain when normal silicon is going to be so fast and so cheap.

http://www-03.ibm.com/press/us/en/pr...ease/35358.wss
Such stacking would allow for dramatically higher levels of integration for information technology and consumer electronics applications. Processors could be tightly packed with memory and networking, for example, into a “brick” of silicon that would create a computer chip 1,000 times faster than today’s fastest microprocessor enabling more powerful smartphones, tablets, computers and gaming devices.