Scientists have created the first map of every neuron in an adult fly brain. The research team says this first wiring diagram of the complete brain of a fruit fly yields new insights into the brain connections that control a fly’s sensory perceptions, memory and even mating rituals. “The closer you look, the more surprised we as scientists are,” said Gregory Jefferis, a neuroscientist at the University of Cambridge and one of the co-leaders of the research. “If we want to understand how the brain works, we need a mechanistic understanding of how all the neurons fit together and let you think. …