The Brain Learns in Unexpected Ways – Scientific American 0 (0)

The connecting points between neurons, called synapses, are where learning is thought to occur. Yet the synapses alone store recollections of only the most elementary reflexes.
Learning and memory require the coupling of information from many different brain regions. This activity alters the physical structure of myelin, the insulating material surrounding the wiring that connects neurons.
Myelin, it turns out, plays a key role in learning by adjusting the speed of information transmission through neural networks
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