Synaptic Pruning
Use it or lose it, at the cellular level
Your brain doesn't just grow connections. It strategically eliminates them too. Synaptic pruning is the process of removing weak or unused neural connections so that the remaining ones can operate more efficiently. It's most dramatic in childhood and adolescence, when up to half of the synapses formed in early development are pruned away.
Pruning sounds destructive, but it's how your brain becomes specialized. A toddler's brain has more raw connections than an adult's, but it's slower and less efficient. Pruning sculpts that excess into the streamlined networks of expert performance. The flip side: skills you don't use also get pruned. The high-school French you never used. The piano you stopped practicing. Your brain doesn't preserve unused capacity. It clears it for whatever you're actually doing.
Related Science Card
Keep training to unlock
Synaptic Pruning