Michael Levin
speaker
1,198 appearances
4 recordings
1 series
first heard Jan 2025
last heard Apr 2025
Michael Levin’s voice in public audio — every appearance, attributed to the second.
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Appearances
So this ability to reach your goal from different starting positions, right?
Get your goal satisfied despite novelty, uh things that you did not know were going to happen is a key aspect of intelligence, of of intelligent behavior.
And so now you have to ask a simple question.
How do these cells and tissues know what a correct frog face looks like?
Okay.
How how do they store the memory of the endpoint?
And we know they can remember the endpoint because they stop when they get there.
When they achieve the normal frog face, then they stop.
So how do we actually uh how how how can we think about collection of tissues storing these kinds of memories?
Well,
We took our inspiration from what happens in the brain, which is a sort of uh familiar system where uh groups of cells store memories and guide behavior, in this case in in three-dimensional space.
And the way it works in the brain is this: you have uh a network of cells.
So here's a neuron, uh, it's touching this other neuron down here.
It has these little proteins called ion channels, which um let um
uh charge molecules in and out.
And as a result, it acquires a voltage.
And that voltage may or may not be propagated to its neighbors.
And the flow of electrical signaling through this network is what underlies all uh cognitive activity.
And so here is a video that this group took of a zebrafish, a living zebrafish brain.
Uh and you can see this amazing um uh electrophysiology going on here.
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