We might soon be able to have a bit more of insight into the phenomenon of how babies walk and how victims of spinal cord injuries regain the ability to walk from this new project by the researchers at the University of Arizona. They created the first pair of legs that can walk in a biologically accurate way.
Scientists built a simplified version of the neural and musculoskeletal architecture we have. The central pattern generator (CPG) in a network of neurons that make rhythmic patterned outputs sans sensory feedback, which is the stuff in our brains that lets us walk without thinking which put to out first.
The robot they created, has an artificial version of CPG, and lets it walk just like a human. Check it out in the video below: [KurzweilAI]