Generally, Brain Plasticity is studied more often in children than adults. Their neurons are still much more flexible to changing roles and functions than those in adults. Its as though they are macro-structured stem-cells with a semi-limited scope of tasks. http://duckhenge.uoregon.edu/io/article.php?id=278 It would seem obvious that a young set of neurons could adapt to any function with some learning, behaviour modification of the neurons and so on... But, what about adults? There are many studies that research the deaf, blind, alcoholics, dyslexic and so forth and there are tests designed to observe if the functions that are not being performed properly or not at all can be transfered, by neuroplasticity and neurobehavioural modification, to a fresh set of neurons that, through neuroplasticity, will learn and perform the desired function. Absract address: http://www.purpled.com/UofO_BDL/Publications/Abstract_Darves_CNS04.pdf After many years of research into neuroplasticity it is becoming more and more evident that there are certain functions and neurons that retain the adaptability and plasticity that is accepted and observed to reside in a younger person's cognitive makeup. This is amazing because it shows promise that, without the use of drugs or surgery, certain functions such as hearing, sight and other less obvious faculties can be restored with simple sensory manipulations. There are recent studies into by-passing stroke-damaged areas of the brain as well. Cool eh?