Scientists Create the Most Complex Map Yet of an Insect Brain's 'Wiring'
upstart writes:
It'll allow researchers to develop a 'a mechanistic understanding of how the brain works':
Researchers understand the structure of brains and have mapped them out in some detail, but they still don't know exactly how they process data - for that, a detailed "circuit map" of the brain is needed.
Now, scientists have created just such a map for the most advanced creature yet: a fruit fly larva. Called a connectome, it diagrams the insect's 3016 neurons and 548,000 synapses, Neuroscience News has reported. The map will help researchers study better understand how the brains of both insects and animals control behavior, learning, body functions and more. The work may even inspired improved AI networks.
"Up until this point, we've not seen the structure of any brain except of the roundworm C. elegans, the tadpole of a low chordate, and the larva of a marine annelid, all of which have several hundred neurons," said professor Marta Zlatic from the MRC Laboratory of Molecular Biology. "This means neuroscience has been mostly operating without circuit maps. Without knowing the structure of a brain, we're guessing on the way computations are implemented. But now, we can start gaining a mechanistic understanding of how the brain works."
[...] As a next step, the team will investigate the structures used for behavioural functions like learning and decision making, and examine connectome activity while the insect does specific activities. And while a fruit fly larva is a simple insect, the researchers expect to see similar patterns in other animals. "In the same way that genes are conserved across the animal kingdom, I think that the basic circuit motifs that implement these fundamental behaviours will also be conserved," said Zlatic.
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