Yet no record exists of the crimes at bad homburg nor at any of the other spa towns to which he was summoned every three months and where he would stay for a week lodged in seclusion outside of town .
" This is definitely new and exciting , " says frank zufall , a neurobiologist at saarland university 's school of medicine in homburg , germany , who was not involved in the work . " This type of experiment had never been done on humans before . "