According to a link on MAKE:Blog, a rat neuron was able to ping a computer chip.  Cyborg bodies and brain implants would seem to be one step closer!
“A rat nerve cell attached to a semiconductor chip has exchanged a signal with the chip, an achievement that could lead to organic computers that process information like a brain, say researchers. In the long term, the technology also could lead to prosthetic limbs that are controlled by a person’s brain and nerves.”

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