For many years,scientists believed that the role of each part of
the human brain( 29 ).Clusters of neurons,they argued, were assigned certain tasks by our genes,tasks that they performed throughout ourlives.These assumptions about the brain were not just a matter of academic discussion,they had realconsequences.They meant,for example,that care workers were trained to have low expectations concerning the rehabilitation of stroke victims.
Studies by neuroscientists such as Alvaro Pascua1-Leone of