Using a piece of that mouse’s brain about the size of a poppy seed, the researchers identified those neurons and traced how they communicated via branch-like fibers through a surprising 500 million ...

The team of scientists behind the project said the map of neuron wiring was so complex, it looked like a picture of a galaxy.

Researchers examined a fragment of the mouse's brain, approximately the size of a poppy seed, pinpointing neurons and tracing ...