Buzz
A team of neuroscientists has successfully developed a digital model of a portion of a rat's brain. This initiative is part of the Blue Brain Project, a branch of the global Human Brain Project, dedicated to brain simulation. The digital model, crafted by 82 scientists worldwide, replicates a cubic millimeter of rat brain tissue, encompassing 30,000 neurons and 40 million synaptic connections.
While a cubic millimeter might seem insignificant, the team achieved a breakthrough by making this digital brain segment function like a biological neocortex. The virtual tissue exhibited electrical activity comparable to that of a real rat brain.
The scientists conducted thousands of experiments on rat neocortexes, compiling an extensive database of neuron types and synaptic connections. They established a set of principles dictating neuron placement and synaptic linkages [PDF], which they then used to construct a larger digital tissue segment that mirrors the same structure and behavior.
While simulating a rat's brain doesn't equate to replicating the human brain digitally, it represents a significant step toward that objective. As reported by The New York Times, the research on this simulation, featured in the journal Cell, stands as one of the most extensive neuroscience studies to date.
