First Digital Piece of Rat-Brain created

Das Blue Brain Project (Wikipedia) ein erstes Stück Digitalhirn produziert, bestehend aus 31000 Neuronen mit 37 Millionen Synapsen und 207 verschiedener Zellen. Dazu haben sie 20 Jahre lang Daten aus einem für Berührungssensorik verantwortlichen Stück Rattenbrain in der Größe von 0,3mm3 aufgezeichnet, aus diesem Datensatz haben sie dann einen Algorithmus entwickelt. Und das Hirn benimmt sich, nun ja, wie ein Hirn:

When the group carefully stimulated their model, mimicking how the living version receives information from other parts of the brain, they found that it responded like the real thing. “The digital piece of tissue behaved very similarly to what we see in the brain,” says Markram. “We see the same patterns of firing, with the same delay.” The digital brain could also adopt different states of activity – representing a sleepy or alert rat.

The digital brain imitates a real brain in other ways, too. For example, the team was able to spot what neuroscientists call “choristers” and “soloists” – neurons that fire in groups and alone. They also spotted triplets – neurons that fire in three beats. “They go pop-pop-pop, like Morse code,” says Markram.

New Scientist: Digital version of piece of rat brain fires like the real thing