http://www.guardian.co.uk/world/2011/may/20/paralysed-sports-star-steps-history-rob-summers
This is a very iteresting artcicle on someone paralysed, given the chance to walk again by attaching electrodes to the legs. What is clear they have learned that it is the legs and spinal cord that are the main drivers of walking – messages from the brain facilitate, but it is the weight transfer that is important. The article of course puts ut much more clearly than this brief summary and there’s a bigger report on this research in the Lancet linked in this article