The process of removing the irrelevant synapses during this time is referred to as synaptic pruning. Early synaptic pruning is mostly influenced by our genes. ... Constant stimulation causes synapses to grow and become permanent. But if a child receives little stimulation the brain will keep fewer of those connections.

What is synapse pruning?

Synaptic pruning refers to the process by which extra neurons and synaptic connections are eliminated in order to increase the efficiency of neuronal transmissions.

What is the reason for pruning in the adolescent brain?

Brain pruning

Synaptic pruning is thought to help the brain transition from childhood, when it is able to learn and make new connections easily, to adulthood, when it is a bit more settled in its structure, but can focus on a single problem for longer and carry out more complex thought processes.