我们可能曾有过这样的体会,手指不慎被灼伤或割破,疼痛钻心,如果此时久别的亲朋好友突然来访,手指疼痛就会减弱或消失。其实这时创伤对手部神经的刺激并未减弱,只是对疼痛的注意力分散了,甚至被忽略了。相反全部注意力都集中于疼痛时,痛觉可明显增大。可见暗 We may have had the experience that our fingers were burned or cut inadvertently, with pain, if at this time a sudden visit by relatives and friends, finger pain will diminish or disappear. In fact, this time the stimulation of the traumatic nerve did not weaken, but distracted the attention of pain, and even ignored. On the contrary all the attention is focused on the pain, the pain can be significantly increased. Can be seen dark