The 1st complete map of an insect’s brain contains 3,016 neurons

Scientists have unveiled the first complete map of an insect’s brain.

The full map, called a connectome, took 12 years of painstaking work to construct and shows the location of 3,016 neurons in the brain of a fruit fly larva (Drosophila melanogaster). Between these brain cells are 548,000 connection points, or synapses, where the cells can send chemical messages to each other which, in turn, trigger electrical signals that travel through the cells’ wiring.

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