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The first complete map of every neuron in an adult fly brain.

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The first wiring diagram of every neuron in an adult brain and the 50 million connections between them has been produced for a fruit fly.

This landmark achievement has been conducted by the FlyWire Consortium, a large international collaboration including researchers from the University of Cambridge, the MRC Laboratory of Molecular Biology in Cambridge, Princeton University, and the University of Vermont.

The researchers say the whole fly brain map is a key first step to completing larger brains. Since the fruit fly is a common tool in research, its brain map can be used to advance our understanding of how neural circuits work.

Dr Gregory Jefferis, from the University of Cambridge and the MRC Laboratory of Molecular Biology, one of the co-leaders of the research, said: “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. For most brains we have no idea how these networks function.

“Flies can do all kinds of complicated things like walk, fly, navigate, and the males sing to the females. Brain wiring diagrams are a first step towards understanding everything we’re interested in – how we control our movement, answer the telephone, or recognise a friend.”
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Academic
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Cambridge University, Cambridge research
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