" Cortical representations are not immutable; they are, to the contrary, dynamic, continuously modified by the lives we lead. Our brains allocate space to body parts that are used in activities that we perform most often-the thumb of a video-game addict, the index finger of a Braille reader. But although experience molds the brain, it molds only an attending brain. "Passive, unattended, or little-attended exercises are of limited value for driving" neuroplasticity, Merzenich and Jenkins concluded. "Plastic changes in brain representations are generated only when behaviors are specifically attended." And therein lies the key. Physical changes in the brain depend for their on a mental state in the mind-the state called attention. Paying attention matters. It matters not only for the size of the brain's representation of this or that part of the body's surface, of this or that muscle. It matters for the dynamic structure of the very circuits of the brain and for the brain's ability to remake itself.

This would be the next frontier for neuroplasticity, harnessing the transforming power of mind to reshape the brain. "

― Jeffrey M. Schwartz , The Mind and the Brain: Neuroplasticity and the Power of Mental Force