3 Smart Things About Animal-Inspired Robotics

When turkeys strut, their leg muscles work as shock absorbers to boost energy efficiency. That gam action inspired a prosthetic exoskeleton for humans: The lightweight contraption is outfitted with a spring and clutch that take the impact off the user's calf muscle. In experiments, a person wearing the braces while walking expended 10 percent less energy. Neurons along the creature's spinal cord can act independently via signals called central pattern generators, or CPGs. A slithering machine inspired by the lamprey, the AmphiBot, has 10 body modules, each with its own onboard computer that mimics a CPG.