The present invention is direct to a method of producing analgesia in a mammalian subject. Initially, a transaction pattern reflecting a transaction is stored in memory. The gradual increase can be regulated by protocols programmed within the CPR device such as intermittently starting and stopping the delivery of CPR accelerating the delivery of CPR, stepping up the CPR frequency, increasing the force of CPR, and adjusting the ratio of compression and decompression in a CPR cycle. Further, the anode portion, cathode portion, first discharge path limiting portion, and second discharge path limiting portion are housed within a light-emitting portion assembly 6 and electrically connected by first through fourth stem pins 9A to 9D, and the stem pins are utilized effectively to support the light-emitting portion assembly.