When presented with a new, intermediate sound, the tickled rats were more likely to think it meant a treat, so they didn't race to the lever to protect themselves from a shock.

当出现一个起调节作用的新声音出现时，接受挠痒的老鼠更可能认为这意味着治疗，所以它们不会跑到杠杆那，为了保护自己免受电击。