The story of how neural nets evolved from the earliest days of AI to now.
According to studies and research, the more we practice, the size of the dendrites grows thicker with a fatty coating of myelin. Therefore, the thicker the dendrites, the faster will be the signals travelling.
With enough practice, the dendrites build a double connection. The faster, stronger and dual connections of dendrites last for a longer time, i.e. we remember what we learned. Thus, dendrites grow only when we are actively practising or doing something repeatedly.
https://byjus.com/biology/dendrites/