A small step toward uploading a mammal

[John Clark]

One year ago researchers mapped all the neural connections in a fly's brain, now they have mapped all the connections in one cubic millimeter in the part of a mouse's brain that deals with vision; It contained 200,000 neurons with 524 million synaptic connections. They obtain this information by slicing that cubic millimeter into 28,000 very thin slices and taking electron microscopic pictures of them and then using AI to trace out the connections and do proofreading. By way of comparison, the human brain has about 86 billion neurons and 100 trillion synaptic connections, and nVidia's Blackwell chip contains 208 billion transistors that can process 327,680 threads simultaneously and can cycle 2.6 billion times a second, a human brain neuron can fire about 100 times a second. And a modern data center would contain well over 100,000 Blackwell chips or their equivalent.

That one cubic millimeter produced 1.6 petabytes of data, about the same as 22 years of continuous HD video.

Scientists map unprecedented detail of connections and visual perception in the mouse brain

John K Clark    See what's on my new list at  Extropolis

5gp

[Cosmin Visan]

A big leap towards mental hospital.