Plasticity

A brain shaped by use.

Change with experience

Connections strengthen with use and weaken without it. Learning a skill produces measurable structural change, and it continues throughout life at a reducing rate.

Neurons that fire together wire together is the shorthand.
Critical periods in development are windows where certain learning is far easier.

Recovery

After injury, other regions can take over some functions, particularly in the young. Rehabilitation works with this and has limits that are often overstated in popular accounts.