Experiments involving real and simulated robots suggest that the relationship between physical movement and sensory input could be crucial to developing more intelligent machines. Tests involving two real and one simulated robot show that feedback between sensory input and body movement is crucial to navigating the surrounding world. Understanding this relationship better could help scientists build more life-like machines, say the researchers involved. Scientists studying artificial intelligence have traditionally separated physical behaviour and sensory input. "But the brain's inputs are not independent," says Olaf Sporns, a neuroscientist at Indiana University, US. "For example, motor behaviour has a role to play...