“…S tim u la tio n can also be used for stu d ies of the n orm al and p a th o logical physiology o f th e basal ganglia, including to p o g rap h ic locali zatio n s of c e rta in fu n ctio n s. Since the in tro d u c tio n o f c ry o th erm ia in to ste re o ta x ic su rg ery rev ersible cold lesions h av e been produced in th e b asal ganglia before p e rm a n e n t d estru ctio n [2,5]. D espite certain a d v a n ta g e s, c ry o th e rm ia has only a lim ited valu e in n eu ro p hysiology, because it is n eu ro p araly zin g .…”