Do our brains change as we learn?

Yes! This is called plasticity, or neuroplasticity. Each time you learn something new and practice it, your brain will either change the structure of its neurons (cells) or increase the number of synapses between your neurons, allowing them to send and receive information faster. This means that you can harness your brain's plasticity to build a better memory or quicken your speed of processing abilities, which will help to keep you sharp as you age. However, plasticity also works in reverse as your brain rids itself of unused or weak synapsis. (This is why we forget most of what we learned in high school.) Experience and practice determines which synaptic connections stay and which go. The weaker synaptic connections are pruned away while the stronger connections -- the ones you use most often -- are preserved and strengthened.

Our brains change as we learn, in a phenomenon known as brain plasticity. By studying the brains in rats as they learn tasks, researchers have found that the connections between the neurons (synapses) and the blood cells, which support neurons, grow and become more plentiful.

That has not yet been proven in human brains.

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