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synaptogenesis

n. (context biology English) The process leading to the formation of synapses

Wikipedia
Synaptogenesis

Synaptogenesis is the formation of synapses between neurons in the nervous system. Although it occurs throughout a healthy person's lifespan, an explosion of synapse formation occurs during early brain development, known as exuberant synaptogenesis. Synaptogenesis is particularly important during an individual's critical period, during which there is a certain degree of synaptic pruning due to competition for neural growth factors by neurons and synapses. Processes that are not used, or inhibited during their critical period will fail to develop normally later on in life.

Usage examples of "synaptogenesis".

They say you can build your synaptogenesis the same way runners build lung capacity, and I’ve been consciously exercising my brain since I was six or seven.