3 ms·
It's cool that they compare it to mice brains and fractions of human brains, but how similar are they really? Do they operate at the same speed? I'd guess biolo
by tinco 11y ago
It's cool that they compare it to mice brains and fractions of human brains, but how similar are they really? Do they operate at the same speed? I'd guess biological neurons trigger slower. Are they as connected? It's nice that it's a hexagonal mapping of a toroids surface, but neurons are connected in true 3d, how much more connected is that?
- TeeWEE 11y agoThe software still models a full network, the hardware has a different network topology.
- icoder 11y agoI still think interconnectedness may well be the bottleneck in mimicking a true brain, and its behaviour.
- trhway 11y ago>but neurons are connected in true 3d, not exactly. The most of the "thinking" neurons form the surface of the brain - that surface is wrinkled into "gyri" to achieve more than 2D, yet it isn't 3D. In the language of Hausdorff dimension it is 2.x something. And the neuron connections are pretty structured topology that is far from each-to-each. If, for example, you look at this picture https://en.wikipedia.org/wiki/Fornix_%28neuroanatomy%29#/media/File:Gray747.png https://en.wikipedia.org/wiki/Fornix_%28neuroanatomy%29#/med... you can see how the wires from the neurons of the hippocampus gyrus are bundled together into the "fimbria" and routed through the "fornix".
- redcalx 11y agoHere's a very short video showing white fibre bundles in a human brain. https://youtu.be/6YFG5OnDp-Y https://youtu.be/6YFG5OnDp-Y From: http://heliosphan.org/pittsburghbraincomp.html http://heliosphan.org/pittsburghbraincomp.html
- stefantalpalaru 11y agoThere are connections between all the cortical layers. See the description of cortical columns: http://brain.oxfordjournals.org/content/brain/120/4/701.full.pdf http://brain.oxfordjournals.org/content/brain/120/4/701.full...
- maaaats 11y agoHe mentioned that 1M cores only gets to about 1% of the human brain. But 10x mouse brains. But as he also mentions, this is in raw power, whereas much of what makes our brains function is the topology or other aspects that are unknown and they can't model.