In reality, neuroplasticity never stops. It will keep occurring no matter how old you become. The only difference is the rate of speed and perhaps the extent to which it occurs. As we get older, it becomes harder to learn new things or develop new skills, and this is because the older we get, the more myelin is laid to bind neural connections.
This process of myelination speeds up signaling time to make our habitation thoughts or activities more efficient. But the flip side of myelination is that cortical maps bound up in myelin become less flexible and harder to change. But certainly not impossible.
