The human connectome is within reach.

Well, in the next few decades at any rate. Researchers have succeeded in mapping one quarter of the connectome of a fruit fly. A fruit fly has 100,000 neurons with some 80 million synapses. Putting this in context, the one fully mapped connectome in existence is that of the nematode worm. This worm has around 350 neurons with around 7,000 synapses. So, this latest development represents a major step forward. Next step, complete the fruit fly’s connectome. Then on to a mouse, and maybe a human after that.

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