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Nature 399, 419 (3 June 1999) | doi:10.1038/20824

Daedalus:  Play it again, Sam

David Jones

Last week Daedalus proposed taping a sequence of electrodes on the skin above a nerve trunk (the spinal cord, say). A voltage spike stepped upwards along the array at a specific velocity would, on travelling-wave-tube principles, fire the one fibre in the trunk with that exact transmission velocity.