I would think the next step would be to upload the simulated neurosphere
of a fly, so as to see that its brain can "see" and "react" in a
simulated world. Can an artificial fly be far behind?
Brent
On 10/3/2024 11:44 AM, John Clark wrote:
*A fly has been uploaded. That's the takeaway I got after reading an
article in yesterday's issue of the journal Nature. Apparently
Sebastian Seung, a leader of the project, had a similar thought
because he is quoted as saying: *
*/“Mind uploading has been science fiction, but now mind uploading —
for a fly, at least — is becoming mainstream science.”/*
*
*
*They put the brain of an adult fly in a bath of liquid plastic which
soon hardened into a solid block. Then they sliced the entire brain
into 7,050 super thin slices and took 21 million high resolution
pictures of it. Then they wrote a computer program that could look at
all those pictures and trace which neuron was connected to which; from
that they were able to conclude that the fly brain had 139,255 neurons
and 50 million connections. Pretty impressive considering that
previously the best neuronal map was that of a worm that only had 385
neurons, but that's not even the best part. They used the information
about how those 139,255 neurons were wired up to make a simulated fly
brain on a computer, and they obtained typical fly behavior! Sebastian
Seungsaid:*
/*"We show that activation of sugar-sensing or water-sensing gustatory
neurons in the computational model accurately predicts neurons that
respond to tastes and are required for feeding initiation. In
addition, using the model to activate neurons in the feeding region of
the Drosophila brain predicts those that elicit motor neuron firing.
Our results demonstrate that _modelling brain circuits using only
synapse-level connectivity and predicted neurotransmitter identity
generates experimentally testable hypotheses and can describe complete
sensorimotor transformations_."*/
/
/
*The researchers say their next target is uploading a mouse brain
which has about 1000 times more neurons than a fly brain. *
*A Drosophila computational brain model reveals sensorimotor
processing* <https://www.nature.com/articles/s41586-024-07763-9.pdf>
John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>
vo3
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