Patent ID: 7399281

Claim:
A pain measurement system for measuring a magnitude of pain experienced by an examinee, comprising: means for applying a stimulus; an output unit that outputs a stimulus to said stimulus applying means; a control unit that controls an output of said output unit; and a console that sends a signal to said control unit to cause said control unit to recognize the value of the stimulus applied by said stimulus applying means; said control unit comprising: first means for controlling said output unit to cause said stimulus applying means to apply a stimulus having a magnitude which increases with time; second means for recognizing the value of the stimulus applied by said stimulus applying means as a first stimulus value when a first signal is received from said console; third means for controlling said output unit to cause said stimulus applying means to apply a stimulus having a magnitude which increases from a predetermined initial value stepwise by nX where X represents said first stimulus value and n represents a positive rational number having a value in the range from 0.1 to 2.0; and fourth means for recognizing the value of the stimulus applied by said stimulus applying means as a second stimulus value when a second signal is received from said console.