During brain development, neurons can regulate their movement until they reach their final destination thanks to a "molecular switch" involving the protein Teneurin 4 (Ten4).

Epilepsy is best known for seizures, but many people with the condition also experience much more frequent and subtler disruptions.

From historic hand-drawn neurons to cutting-edge 3D scans, brain imaging is entering a new era. Scientists are now mapping nerve fibers in unprecedented detail, even in decades-old samples. These ...