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What is Neuroplasticity and How it Works

Neuroplasticity is the brain's ability to change and adapt due to experience. It is an umbrella term referring to the brain's ability to change, reorganize, or grow neural networks. This can involve functional changes due to brain damage or structural changes due to learning.


Plasticity refers to the brain's malleability or ability to change; it does not imply that the brain is plastic. Neuro refers to neurons, the nerve cells that are the building blocks of the brain and nervous system. Thus, neuroplasticity allows nerve cells to change or adjust.


How Neuroplasticity Works

The first few years of a child's life are a time of rapid brain growth. At birth, every neuron in the cerebral cortex has an estimated 2,500 synapses or small gaps between neurons where nerve impulses are relayed. By the age of three, this number has grown to a whopping 15,000 synapses per neuron.


The average adult, however, only has about half that number of synapses. Why? Because as we gain new experiences, some connections are strengthened while others are eliminated. This process is known as synaptic pruning.


Neurons that are used frequently develop stronger connections. Those that are rarely or never used eventually die. By developing new connections and pruning away weak ones, the brain can adapt to the changing environment.



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