A scene from “Good Shepherd”

Meredith (voice-over): It turns out that, under the right conditions, neurons can recover. If they can break from normal operations, and focus on healing, they have a chance at regrowth. It's human nature to want to fix what's broken. We may not be able to replicate exactly what we lost, but in its place will grow something new. It's a long process but it happens slowly, but surely, until we have what we need.