The present invention relates to an apparatus and a method for stimulating a person, wherein said apparatus comprises: at least one stimulation signal generator which generates a stimulation signal which is applied to said person at least one detector for detecting a physiological signal derived from said person in response to said stimulation signal and a monitoring unit which controls a safety switch to terminate automatically the application of said stimulation signal to said person, if a critical state of said person is recognized in response to the detected physiological signal.
