therapy helped 12 out of 18 patients,and brain scans indicated that activity in the parts of the brain producing the unwelcome thoughts had dropped significantly.This is yet more evidence that the structure and the functions of the brain are not only not set in stone,but that we can alter them by our own thoughts.In the words of Schwartz,“the mind can change the brain”
(29) 1 evolved at different times 2 was predetermined
3 needed clarification 4 could not be easily explained